THINKING TOOLS INC
SB-2/A, 1996-10-18
EDUCATIONAL SERVICES
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   As filed with the Securities and Exchange Commission on October 18, 1996 
    

                                                    Registration No. 333-11321 

                   U.S. SECURITIES AND EXCHANGE COMMISSION 
                            Washington, D.C. 20549 

   
                         Amendment No. 2 to FORM SB-2 
                            REGISTRATION STATEMENT 
                       UNDER THE SECURITIES ACT OF 1933 
    


                             THINKING TOOLS, INC. 
                (Name of small business issuer in its charter) 

<TABLE>
   <S>                         <C>                            <C>
          Delaware                        7372                     77-0436410 
   (State or jurisdiction          (Primary Standard            (I.R.S. Employer 
    of incorporation or        Industrial Classification      Identification No.) 
       organization)                  Code Number) 
</TABLE>

<TABLE>
    <S>                                                                 <C>
                        Thinking Tools, Inc.                                        John Hiles, President 
                  One Lower Ragsdale Drive, 1-250                                    Thinking Tools, Inc. 
                     Monterey, California 93940                                One Lower Ragsdale Drive, 1-250 
    (Address of principal executive offices and principal place                   Monterey, California 93940 
                            of business)                                     (408) 373-8688/(408) 373-7020 (Fax) 
                                                                        (Name, address, and telephone number of agent 
                                                                                         for service) 
</TABLE>

                                    Copies to: 

<TABLE>
   <S>                                                 <C>
                Stephen H. Kay, Esq.                       Thomas E. Constance, Esq. 
    Squadron, Ellenoff, Plesent & Sheinfeld, LLP             Shari K. Krouner, Esq. 
                  551 Fifth Avenue                     Kramer, Levin, Naftalis & Frankel 
              New York, New York 10176                          919 Third Avenue 
             Telephone: (212) 661-6500                      New York, New York 10022 
             Telecopier: (212) 697-6686                    Telephone: (212) 715-9100 
                                                           Telecopier: (212) 715-8000 
</TABLE>

   Approximate date of proposed sale to the public: As soon as practicable 
after the effective date of this Registration Statement. 

  If this Form is filed to register additional securities for an offering 
pursuant to Rule 462(b) under the Securities Act of 1933, as amended, please 
check the following box and list the Securities Act registration statement 
number of the earlier effective registration statement for the same offering. 
[ ] 

  If this Form is a post-effective amendment filed pursuant to Rule 462(c) 
under the Securities Act, check the following box and list the Securities Act 
registration statement number of the earlier effective registration statement 
for the same offering. [ ] 

  If delivery of the prospectus is expected to be made pursuant to Rule 434, 
please check the following box. [ ] 

  If any of the securities being registered on this Form are to be offered on 
a delayed or continuous basis pursuant to Rule 415 under the Securities Act, 
check the following box. [X] 

The Registrant hereby amends this Registration Statement on such date or 
dates as may be necessary to delay its effective date until the Registrant 
shall file a further amendment which specifically states that this 
Registration Statement shall thereafter become effective in accordance with 
Section 8(a) of the Securities Act of 1933 or until the Registration 
Statement shall become effective on such date as the Securities and Exchange 
Commission, acting pursuant to said Section 8(a), may determine. 

<PAGE> 

                            CROSS REFERENCE SHEET 

<TABLE>
<CAPTION>
                        Item Number of Form SB-2                          Location or Caption in Prospectus 
         ------------------------------------------------------ ----------------------------------------------------- 
<S>      <C>                                                    <C>
 1.      Front of the Registration Statement and Outside Front 
         Cover of Prospectus ...................................Outside Front Cover Page 
 2.      Inside Front and Outside Back Cover Pages of 
         Prospectus  ...........................................Inside Front and Outside Back Cover Pages 
 3.      Summary Information and Risk Factors ..................Prospectus Summary; Risk Factors 
 4.      Use of Proceeds  ......................................Prospectus Summary; Use of Proceeds; Business 
 5.      Determination of Offering Price .......................Outside Front Cover Page; Underwriting 
 6.      Dilution ..............................................Risk Factors--Dilution; Dilution 
 7.      Selling Security Holders  .............................Not Applicable 
 8.      Plan of Distribution ..................................Outside Front Cover Page; Underwriting 
 9.      Legal Proceedings .....................................Risk Factors; Business 
10.      Directors, Executive Officers, Promoters and Control 
         Persons  ..............................................Management 
11.      Security Ownership of Certain Beneficial Owners and 
         Management  ...........................................Principal Stockholders; Management 
12.      Description of Securities .............................Outside Front Cover Page; Description of Securities 
13.      Interest of Named Experts and Counsel .................Legal Matters; Experts 
14.      Disclosure of Commission Position on Indemnification 
         for Securities Act Liabilities  .......................Part II 
15.      Organization Within Last Five Years  ..................Management's Discussion and Analysis of Financial 
                                                                Condition and Results of Operations 
16.      Description of Business ...............................Business 
17.      Management's Discussion and Analysis or Plan of        Management's Discussion and Analysis of Financial 
         Operation .............................................Condition and Results of Operations 
18.      Description of Property ...............................Business--Property 
19.      Certain Relationships and Related Transactions ........Certain Transactions 
20.      Market for Common Equity and Related Stockholder       Risk Factors--No Dividends; Dividend Policy; 
         Matters  ..............................................Description of Securities 
21.      Executive Compensation ................................Management--Executive Compensation 
22.      Financial Statements ..................................Financial Statements 
23.      Changes in and Disagreements with Accountants on 
         Accounting and Financial Disclosure  ..................Not Applicable 
24.      Indemnification of Directors and Officers  ............Part II 
25.      Other Expenses of Issuance and Distribution ...........Part II 
26.      Recent Sales of Unregistered Securities ...............Part II 
27.      Exhibits ..............................................Part II; Exhibits 
28.      Undertakings ..........................................Part II 
</TABLE>

                                      ii 
<PAGE> 

                               EXPLANATORY NOTE 

   This Registration Statement covers the registration of (i) 1,400,000 
shares of Common Stock to be offered by the Company, plus 210,000 shares 
issuable upon exercise of the Over-Allotment Option (the "Offering"), (ii) 
456,250 shares of Common Stock (the "Bridge Warrant Shares") issuable upon 
exercise of warrants (the "Bridge Warrants") issued by the Company in August 
1996, (iii) Options (the "Underwriter's Options") to purchase 140,000 shares 
of Common Stock to be issued by the Company to the Underwriter in connection 
with this Offering, and (iv) 140,000 shares of Common Stock purchasable upon 
exercise of the Underwriter's Options (the "Underwriter's Option Shares"). 
The Bridge Warrant Shares, the Underwriter's Options and the Underwriter's 
Option Shares are offered by certain holders of such securities (the "Selling 
Securityholders") and not for the account of the Company. Following the 
Prospectus included in this Registration Statement are certain pages of the 
Prospectus relating to the securities being offered by the Selling 
Securityholders, including alternate front and back cover pages, an alternate 
"The Offering" section of the "Prospectus Summary," and sections entitled 
"Concurrent Sales By Company" and "Selling Stockholders." All other sections 
of the Prospectus for this Offering, other than "Underwriting," are to be 
used in the Prospectus relating to the Selling Securityholders. All 
references in this Prospectus to this "Offering" will be changed to the 
"Company Offering" in the Prospectus relating to the Selling Securityholders. 
In addition, cross-references in this Prospectus shall be adjusted in the 
Prospectus for Selling Securityholders to refer to the appropriate alternate 
Prospectus pages. 

                                      iii 
<PAGE> 

[red herring] Information contained herein is subject to completion or 
amendment. A registration statement relating to these securities has been 
filed with the Securities and Exchange Commission. These securities may not 
be sold nor may offers to buy be accepted prior to the time the registration 
statement becomes effective. This prospectus shall not constitute an offer to 
sell or the solicitation of an offer to buy nor shall there be any sale of 
these securities in any State in which such offer, solicitation or sale would 
be unlawful prior to registration or qualification under the Securities laws 
of any such State. 

   
PROSPECTUS      SUBJECT TO COMPLETION, DATED OCTOBER 18, 1996 
                             THINKING TOOLS, INC. 
                               1,400,000 Shares 
                                 Common Stock 
    

   Thinking Tools, Inc. (the "Company") hereby offers 1,400,000 shares (the 
"Shares") of common stock, par value $.001 per share (the "Common Stock") of 
the Company. 

   Prior to this Offering, there has been no public market for the Common 
Stock. The Common Stock of the Company has been approved for quotation, 
subject to official notice of issuance, on the Nasdaq SmallCap Market 
("NASDAQ") under the symbol "TSIM". It is currently anticipated that the 
initial public offering price will be between $6.00 and $8.00 per share. The 
initial public offering price of the Common Stock has been determined by 
negotiations between the Company and Barington Capital Group, L.P. (the 
"Underwriter"). See "Underwriting" for information relating to the factors 
considered in determining the initial public offering price. 

  THE SECURITIES OFFERED HEREBY ARE SPECULATIVE AND INVOLVE A HIGH DEGREE OF 
    RISK AND IMMEDIATE SUBSTANTIAL DILUTION. SEE "RISK FACTORS" ON PAGES 8 
                THROUGH 13 AND "DILUTION" ON PAGES 15 AND 16. 

   THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES 
   AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE 
    SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION 
         PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY 
            REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. 

<TABLE>
<CAPTION>
                                 Underwriting 
                                 Discounts and       Proceeds to 
                Price to Public  Commissions(1)      Company (2) 
<S>                <C>              <C>                <C>
Per Share          $                $                  $ 
Total(3)           $                $                  $ 
</TABLE>

   
(1) Does not reflect additional compensation to be received by the 
    Underwriter including (a) a non-accountable expense allowance equal to 3% 
    of the gross proceeds of this Offering (of which $35,000 has been paid), 
    (b) options entitling the Underwriter to purchase from the Company, for a 
    period of five years from the date of this Prospectus, up to 140,000 
    shares of Common Stock at an exercise price equal to 160% of the initial 
    public offering price (the "Underwriter's Options") and (c) a two-year 
    consulting agreement pursuant to which the Underwriter will render 
    non-exclusive advisory services to the Company in consideration of the 
    payment of a fee upon the closing of certain transactions. The Company 
    has also agreed to indemnify the Underwriter against certain civil 
    liabilities, including liabilities under the Securities Act of 1933, as 
    amended (the "Securities Act"). See "Underwriting." 
(2) Before deducting estimated expenses payable by the Company (including the 
    Underwriter's non-accountable expense allowance) estimated at $794,000 
    ($838,100, if the Over-Allotment Option (as defined below) is exercised 
    in full). 
(3) The Company has granted an option to the Underwriter, exercisable within 
    45 days after the date of this Prospectus, to purchase up to an 
    additional 210,000 shares of Common Stock, on the same terms and 
    conditions set forth above, solely to cover over-allotments (the "Over- 
    Allotment Option"). If the Over-Allotment Option is exercised in full, 
    the Price to Public, Underwriting Discount and Proceeds to Company will 
    be $          , $         , and $       , respectively. See 
    "Underwriting." 
    

     The Shares offered hereby are offered, subject to prior sale, when, as 
and if delivered to and accepted by the Underwriter, and subject to approval 
of certain legal matters by its counsel and to certain other conditions. The 
Underwriter reserves the right to withdraw, cancel or modify this Offering 
and to reject any order in whole or in part. It is expected that delivery of 
the certificates representing the Common Stock will be made at the offices of 
Barington Capital Group, L.P., 888 Seventh Avenue, New York, New York 10019 
on or about October   , 1996. 

                          Barington Capital Group, L.P. 

                 The date of this Prospectus is           , 1996. 

<PAGE> 

[graphic] A screen from the Company's TeleSim product, which is a simulation 
of a local exchange telephone market. 

[graphic] A screen from the Company's Project Challenge product, which is a 
simulation of project management of information systems projects. 

[graphic] The title screen from the Company's SimHealth product, which is a 
simulation of the impact of various proposed reforms on the United States 
health care system. 

   
IN CONNECTION WITH THIS OFFERING, THE UNDERWRITER MAY OVER-ALLOT OR EFFECT 
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE COMMON STOCK 
AT A LEVEL ABOVE THAT WHICH MIGHT OTHERWISE PREVAIL IN THE OPEN MARKET. SUCH 
TRANSACTIONS MAY BE EFFECTED ON THE NASDAQ SMALLCAP MARKET, IN THE 
OVER-THE-COUNTER MARKET OR OTHERWISE. SUCH STABILIZING, IF COMMENCED, MAY BE 
DISCONTINUED AT ANY TIME. 
    

The Company intends to furnish to its stockholders annual reports containing 
financial statements audited by independent accountants, and such other 
periodic reports as the Company may deem appropriate or as may be required by 
law. 

SimCity(tm) is a trademark of Maxis, Inc. 

<PAGE> 

  All references to "Thinking Tools" or the "Company" contained in this 
Prospectus refer to Thinking Tools, Inc., a Delaware corporation, and its 
predecessor. Unless otherwise stated, all information contained in this 
Prospectus assumes that the Over-Allotment Option has not been exercised. 
This Prospectus contains forward-looking statements that involve risks and 
uncertainties. The Company's actual results may differ significantly from the 
results discussed in the forward-looking statements. Factors that might cause 
such differences include, but are not limited to, those discussed in "Risk 
Factors." The Shares offered hereby involve a high degree of risk. Investors 
should carefully consider the information set forth under "Risk Factors." 

                              PROSPECTUS SUMMARY 

   The following summary information is qualified in its entirety by the more 
detailed information and financial statements, including the notes thereto, 
appearing elsewhere in this Prospectus and, accordingly, should be read in 
conjunction with such information, financial statements and notes. Each 
prospective investor is urged to read this Prospectus in its entirety. 

                                 THE COMPANY 

   Thinking Tools develops powerful and flexible PC-based business simulation 
software programs that enable users to simulate real life business 
situations, explore complex operational problems and improve functional and 
problem solving skills. The Company believes that its agent-based, adaptive 
simulation software has a broad range of potential business applications, 
including strategic planning, sales and marketing, training, competitive 
positioning, product marketing, operational planning, logistics and supply 
and demand forecasting. The Company believes that its products are unique 
because they combine user-friendly interactive interfaces used in 
sophisticated computer games with its proprietary agent-based programming to 
produce interactive adaptive business simulations. Agent-based, adaptive 
simulations can be used to model competitive situations, simulate consumer 
behavior, demonstrate the impact of management actions, seek system 
vulnerabilities and explore complex operational systems. The Company's 
user-friendly interfaces enable persons with no technical training to 
comfortably interact with complex systems. 

   The Company's agent-based programming enables autonomous agents in the 
simulation to respond to user behaviors in unpredictable and realistic ways. 
In contrast to other modelling and simulation tools in use and known to the 
Company, which are generally built around a limited number of agents acting 
according to pre-programmed, deterministic algorithms, the Company believes 
that the multiplicity of autonomous agents and the results of their 
interactions with each other and the user give the Company's simulations a 
complexity that mirrors human behavior found in the real world. 

   The Company's operations to date have primarily involved developing 
complex business simulation software programs for specific customers. These 
projects have helped to fund the Company's research and development efforts, 
led to the validation of the Company's core technology by major U.S. 
companies and demonstrated the potential market for business simulation 
software of the type developed by the Company. 

   The Company's goal is to develop and own the rights to a variety of 
simulations in divergent business areas. The Company believes that it is 
well-positioned to expand its business by leveraging its existing products 
and technology platform to become a product-oriented, sales-driven company. 
As part of its growth strategy, the Company intends to begin self-funded 
development of new simulations and adaptation of previously developed 
simulations for wider distribution or application to new fields. The Company 
also plans, upon request, to customize these packages for specific customers. 
The Company is currently developing software to simulate disaster recovery 
scenarios, logistics simulation software for planning and training in the 
United States Army and United States Air Force and software that could 
provide access to simulations being developed by the Company for use on the 
internet. The Company intends to market its 

                                      3 
<PAGE> 

products through existing channels of its strategic partners as well as 
directly to customers by establishing an in-house sales force and through 
value added resellers. 

   Some of the Company's products developed to date include SimRefinery, 
SimHealth, TeleSim and Project Challenge. SimRefinery, a demonstration 
program released in late 1992, which was developed for Chevron, Inc., 
simulates the effects of users' decisions made in the running of a refinery. 
SimHealth, a simulation of the impact of various proposed reforms on the 
United States health care system, simulates both the supply and demand sides 
of the health care industry and the impact of choices and values on the 
financial health of the system and its usage and demand. TeleSim, a 
simulation of a local exchange telephone market, was developed by the Company 
for Coopers & Lybrand L.L.P ("Coopers"). Since its initial development in 
1994, versions of TeleSim have been produced and sold through Coopers to 
Sprint Corp., NYNEX Corporation, Pacific Telecom, Inc. and AT&T Corp. Project 
Challenge, the development of which was funded by SHL SystemHouse Inc., a 
division of MCI Communications Corp. ("SystemHouse"), focuses on project 
management for information systems projects. Project Challenge users create a 
model of their projects, then simulate management of the projects under 
benign, realistic or hostile conditions. Other customers of the Company have 
included Xerox Corp., Andersen Consulting L.L.P., Texas Instruments 
Corporation, Harcourt Brace College Publishers, a division of Harcourt 
General, Inc., Steelcase Inc. and System Engineering Solutions Inc. (a prime 
contractor for work in logistics for the U.S. Army and U.S. Air Force). 

   The Company's capabilities in developing highly sophisticated simulations 
are built upon experience gained from developing computer games, its skill in 
programming autonomous and adaptive agents and its large and growing library 
of reusable simulation objects. The Company's creative control is based on 
its proprietary development environment, WHITEBOARD, which supports interface 
building, object creation, simulation management, object management and 
application frameworks. WHITEBOARD simplifies and supports the construction 
of agent-based simulations and is the core of the development of each of the 
Company's simulations. 

   The Company was formed to purchase, on December 30, 1993, certain assets 
of the Business Simulation Division (the "Division") of Maxis, Inc. 
("Maxis"), a leading computer game company and creator of the simulation game 
SimCity(tm). Through the purchase agreement with Maxis, the Company acquired 
the Division's equipment, staff, work-in-progress, customers, licenses, 
prospects, software tools, libraries and processes (the "Acquisition"). 

   The Company's predecessor was incorporated in California on December 30, 
1993. The Company was re-incorporated in Delaware on August 8, 1996, and its 
principal place of business is located at One Lower Ragsdale Drive, 1-250, 
Monterey, California 93940, at (408) 373-8688. 

                                      4 
<PAGE> 

                                 The Offering 

<TABLE>
<S>                                                <C>
Common Stock Offered by the Company  ..............1,400,000 shares 
Common Stock Outstanding Immediately Prior 
  to this Offering(1) .............................3,031,758 shares 
Common Stock to be Outstanding 
  Following this Offering(1)(2) ...................4,431,758 shares 
Risk Factors  .....................................The shares of Common Stock offered hereby involve a high degree of 
                                                   risk and substantial dilution and should be purchased only by 
                                                   persons who can afford to sustain the loss of their investment. 
                                                   See "Risk Factors" and "Dilution." 
Use of Proceeds  ..................................The net proceeds of this Offering will be used (i) to fund the 
                                                   Company's sales and marketing efforts, (ii) to fund the Company's 
                                                   product development efforts, (iii) to fund the retirement of the 
                                                   Bridge Notes and (iv) for working capital and general corporate 
                                                   purposes. 
NASDAQ Trading Symbol (3) ........................."TSIM" 
</TABLE>

(1) Does not include (i) 456,250 shares of Common Stock issuable upon 
    exercise of warrants (the "Bridge Warrants") to purchase Common Stock, at 
    an exercise price equal to the lesser of $4.20 or 60% of the initial 
    public offering price per share in this Offering, issued by the Company 
    to purchasers of its 10% Senior Secured Promissory Notes (the "Bridge 
    Notes") in connection with a debt financing consummated prior to this 
    Offering (the "Bridge Financing"); (ii) 468,242 shares of Common Stock 
    issuable upon exercise of warrants to purchase Common Stock at an 
    exercise price of $1.07 per share issued to Thinking Technologies, L.P. 
    ("Technologies"), a principal stockholder of the Company (the 
    "Technologies Warrants"); (iii) 376,000 shares of Common Stock reserved 
    for issuance under the Company's 1996 Stock Option Plan (the "Plan"), 
    options to purchase 145,036 of which have been granted under the Plan, 
    including options to purchase 52,000 shares exercisable at $.79 per share 
    and options to purchase 52,000 shares exercisable at $5.00 per share 
    granted to certain of the Company's employees, and options to purchase 
    41,036 shares of Common Stock exercisable at $1.00 per share granted to 
    certain members of the Company's board of directors; (iv) 58,964 shares 
    of Common Stock issuable upon exercise of options granted outside of the 
    Plan to certain members of the Company's board of directors at an 
    exercise price of $0.79 per share and (v) 15,000 shares of Common Stock 
    issuable upon exercise of options granted outside of the Plan to a 
    non-affiliate of the Company at an exercise price of $1.00 per share. See 
    "Management--1996 Stock Option Plan", "Certain Transactions", and 
    "Description of Securities." 

(2) Does not include (i) up to 210,000 shares of Common Stock issuable upon 
    exercise of the Over- Allotment Option and (ii) 140,000 shares of Common 
    Stock issuable upon exercise of the Underwriter's Options. 

(3) There is currently no market for the Common Stock and there can be no 
    assurance that a market for the Common Stock will develop after this 
    Offering. The Common Stock of the Company has been approved for 
    quotation, subject to official notice of issuance, on the NASDAQ, 
    however, there can be no assurance that such application for listing, if 
    approved, will be maintained. See "Risk Factors-- Absence of Public 
    Market; Negotiated Offering Price." 

                                      5 
<PAGE> 

                        SUMMARY FINANCIAL INFORMATION 

   The summary financial data for the Company set forth below under the 
caption "Selected Statement of Operations Data" for the years ended December 
31, 1994 and 1995, and under the caption "Selected Balance Sheet Data" at 
December 31, 1995, are derived from the financial statements of the Company, 
audited by KPMG Peat Marwick LLP, independent certified public accountants, 
included elsewhere in this Prospectus. The statement of operations data for 
the six months ended June 30, 1995 and 1996, and the balance sheet data at 
June 30, 1996, are derived from unaudited financial statements included 
elsewhere in this Prospectus, and, in the opinion of management, include all 
adjustments (consisting only of normal recurring adjustments) necessary for 
the fair presentation of the Company's financial position and results of 
operations at the end of and for such periods. Operating results for the six 
months ended June 30, 1996 are not necessarily indicative of results that may 
be expected for the full year. The summary financial data should be read in 
conjunction with the Financial Statements and notes thereto included 
elsewhere in this Prospectus and "Management's Discussion and Analysis of 
Financial Condition and Results of Operations." 

<TABLE>
<CAPTION>
                                            Six Months Ended         Years Ended 
                                                June 30,             December 31, 
                                           --------------------- -------------------- 
                                             (In thousands, except per share data) 
                                              1996       1995       1995      1994 
                                          -----------  ---------  --------- --------- 
                                                (Unaudited) 
<S>                                        <C>         <C>       <C>        <C>
Selected Statement of Operations Data: 
Revenues                                        $634        $676    $1,329       $846 
Cost of revenues                                 354         374       708        736 
Operating expenses                               592         531     1,079        784 
Net income (loss)                               (347)       (280)      (589)      (731) 
Net income (loss) per share                   $(0.11)     $(0.09)    $(0.19)    $(0.23) 
Shares used in computing net income 
  (loss) per share                         3,141,000   3,141,000 3,141,000  3,141,000 
</TABLE>

<TABLE>
<CAPTION>
                                                                At June 30, 1996 
                                                    ----------------------------------------- 
                                                                              Pro Forma As 
                                                    Actual(1)  Pro Forma(2)    Adjusted (3) 
                                  At December 31,   --------- -------------  ---------------- 
                                        1995                      (Unaudited) 
                                 ----------------   ----------------------------------------- 
                                                                 (In thousands) 
<S>                                   <C>           <C>          <C>             <C>
Selected Balance Sheet Data: 
Cash                                  $   152       $     7      $1,100          $7,271 
Working capital (deficit)                (298)         (617)       (417)          7,029 
Current assets                            319           239       1,332           7,503 
Total assets                              432           350       1,443           7,614 
Total current liabilities                 617           856       1,749             474 
Total long term liabilities             1,373         1,399          19              19 
Stockholders' equity (deficit)         (1,558)       (1,905)       (325)          7,121 
</TABLE>

(1) Gives effect to the merger of Thinking Tools, Inc., a California 
    corporation ("TTC"), with and into its wholly-owned subsidiary Thinking 
    Tools, Inc., a Delaware corporation (the "Merger"), including the 
    exchange of each share of common stock of TTC outstanding prior to the 
    Merger for .7462 shares of Common Stock pursuant to the Merger. See "Note 
    1" to "Notes to Financial Statements." 

(2) Pro forma to give effect to (i) additional loan advances to the Company 
    from Technologies in the aggregate principal amount of $150,691 received 
    in July 1996; (ii) the accrual of $381,845 of interest on the Company's 
    indebtedness to Technologies through August 27, 1996 (including non-cash 
    interest expense of $350,000 resulting from the issuance of the 
    Technologies Warrants); (iii) the conversion by 

                                      6 
<PAGE> 

    the Company of debt in the principal amount of approximately $1,320,000 
    into an aggregate of 263,158 shares of Common Stock (the "Conversion" and 
    collectively with the Merger, the "Recapitalization"), with the remaining 
    $60,000 of note payable reclassified as accrued expenses; (iv) non-cash 
    compensation expense of $200,000 resulting from the difference between 
    the grant price and the deemed fair value of the Common Stock underlying 
    vested options granted in July and August, 1996 and (v) the issuance of 
    $1,825,000 aggregate principal amount of Bridge Notes in the Bridge 
    Financing (with related expenses of approximately $258,000), of which 
    $625,000 was purchased by Technologies, the application of the estimated 
    net proceeds therefrom, and $550,000 of debt discount resulting from the 
    issuance of the Bridge Warrants, a portion of which was utilized to repay 
    $625,000 of outstanding indebtedness to Technologies. See "Certain 
    Transactions" and "Note 10" and "Note 13" to "Notes to Financial 
    Statements." 

(3) Adjusted to give effect to (i) the sale by the Company of the 1,400,000 
    shares of Common Stock offered hereby at the assumed initial public 
    offering price of $7.00 per share and the application of the estimated 
    net proceeds therefrom and (ii) interest expense of $579,000 (including 
    non-cash interest expense of $550,000 resulting from the issuance of the 
    Bridge Warrants). See "Use of Proceeds" and "Note 10" and "Note 13" to 
    "Notes to Financial Statements." 

                                      7 
<PAGE> 

                                 RISK FACTORS 

THE SHARES OFFERED HEREBY INVOLVE SUBSTANTIAL RISKS AND SHOULD BE PURCHASED 
ONLY BY PERSONS WHO CAN AFFORD TO SUSTAIN THE LOSS OF THEIR INVESTMENT. THE 
FOLLOWING RISK FACTORS, IN ADDITION TO THE OTHER INFORMATION AND FINANCIAL 
DATA SET FORTH ELSEWHERE IN THIS PROSPECTUS, SHOULD BE CONSIDERED CAREFULLY 
IN EVALUATING THE COMPANY AND ITS BUSINESS BEFORE MAKING AN INVESTMENT IN THE 
SHARES. THE RISKS DESCRIBED BELOW AND ELSEWHERE IN THIS PROSPECTUS ARE NOT 
INTENDED TO BE AN EXHAUSTIVE LIST OF THE GENERAL OR SPECIFIC RISKS INVOLVED, 
BUT MERELY IDENTIFY CERTAIN RISKS THAT ARE NOW FORESEEN BY THE COMPANY. IT 
MUST BE RECOGNIZED THAT OTHER RISKS, NOT NOW FORESEEN, MIGHT BECOME 
SIGNIFICANT IN THE FUTURE AND THAT THE RISKS WHICH ARE NOW FORESEEN MIGHT 
AFFECT THE COMPANY TO A GREATER EXTENT THAN IS NOW FORESEEN OR IN A MANNER 
NOT NOW CONTEMPLATED. EACH PROSPECTIVE INVESTOR SHOULD CAREFULLY CONSIDER ALL 
INFORMATION CONTAINED IN THIS PROSPECTUS AND SHOULD GIVE PARTICULAR 
CONSIDERATION TO THE FOLLOWING RISK FACTORS BEFORE DECIDING TO PURCHASE THE 
COMMON STOCK OFFERED HEREBY. 

Limited Operating History; History of Losses; Uncertain Future Profitability. 

   
   The Company commenced operations in January 1994 and is still in the early 
stage of developing products. Since its inception, the Company has 
experienced cumulative losses of $1,650,000 and $1,997,000 as of December 31, 
1995 and June 30, 1996, respectively, and has not experienced any quarter of 
profitable operations. Consequently, its operations are subject to numerous 
risks associated with the development of a new business. The Company expects 
to continue to incur operating losses for the foreseeable future, principally 
as a result of expenses associated with the Company's product development 
efforts and anticipated sales, marketing and general and administrative 
expenses. The Company's long-term viability and growth will depend on the 
successful development, commercialization and marketing of its proposed 
products. There can be no assurance that the Company will be able to develop 
adequate revenue sources to successfully complete the development, 
commercializing and marketing of its proposed products or that if it is 
successful in doing so it will be able to achieve and maintain profitability. 
The report of the Company's independent accountants concerning the Financial 
Statements included herein includes an explanatory paragraph relative to the 
Company's ability to continue as a going concern. See "Management's 
Discussion and Analysis of Financial Condition and Results of Operations" and 
the Financial Statements included herein. 
    

Dependence on Emerging Market for Business Simulation Software. 

   The markets for business simulation software in general, and agent-based, 
adaptive simulation software in particular, are still emerging, making it 
difficult to predict with any assurance the future size of the markets. There 
can be no assurance that such software will achieve broad-based market 
acceptance, that markets for such software will continue to grow or that 
increased sales of the Company's products will occur or continue as a result 
of any such growth. There can be no assurance that alternatives to the 
Company's agent-based, adaptive simulation software, such as object-oriented 
tools, authoring tools or game methods will not achieve greater market 
acceptance than the Company's agent-based, adaptive simulation software. Even 
if agent-based, adaptive simulation achieves market acceptance and that 
market grows, there can be no assurance that the Company will obtain a 
significant share of that market. See "Business--Growth Strategy" and 
"--Competition." 

Uncertainties Related to Development of Additional Products. 

   
   Significant additional efforts will be required for the Company to develop 
additional agent-based, adaptive simulation products. Any such future efforts 
are subject to certain risks including, but not limited to, the risk that new 
simulations will be difficult to develop into commercially viable products 
free of 
    


                                      8 
<PAGE> 

competitive challenges and that any such products may fail to achieve and 
sustain market acceptance. There can be no assurance that the Company's 
product development efforts will be successful. See "Business -- Growth 
Strategy" and "--Products." 

Limited Marketing Experience; Need for Additional Personnel. 

   The Company has very limited marketing resources and limited experience in 
marketing and selling its products and services. The Company will have to 
further develop its marketing and sales force or rely principally on 
value-added resellers, collaborators, licensees or others to provide for the 
marketing and sales of its products and services. There can be no assurance 
that the Company will be able to establish adequate marketing and sales 
capabilities or make arrangements with value-added resellers, collaborators, 
licensees or others to perform such activities. Achieving market penetration 
will require significant efforts by the Company to create awareness of, and 
demand for, its proposed products. Accordingly, the Company's ability to 
expand its customer base will depend upon its marketing efforts, including 
its ability to establish an effective internal sales organization or 
establish strategic marketing arrangements with others. The failure by the 
Company to successfully develop its marketing capabilities, internally or 
through others, would have a material adverse effect on the Company's 
business, financial condition and results of operations. Further, there can 
be no assurance that the development of such marketing capabilities will lead 
to sales of the Company's proposed products. See "Business--Personnel." 

   The success of the Company will also depend upon its ability to hire and 
retain additional qualified management, marketing and financial personnel, 
including a chief executive officer and a chief financial officer, as to 
which there can be no assurance. The Company will compete with other 
companies with greater financial and other resources for such personnel. See 
"Management." 

Risks Associated with Growth Strategy. 

   The Company's growth strategy is expected to place a significant strain on 
its management, administrative, operational, financial and other resources. 
The Company's success will be dependent upon its ability to hire additional 
highly qualified personnel to support the Company's product development and 
marketing efforts, including monitoring operations, controlling costs and 
maintaining effective management, inventory and credit controls. The Company 
has limited experience in effectuating rapid expansion and managing a broad 
range of products and services and significant operations. There can be no 
assurance that the Company will be able to continue to manage its operations 
or that any inability to do so will not adversely affect its business, 
financial condition or results of operations. See "Business--Growth 
Strategy." 

Anticipated Non-Cash Charges. 

   As a result of the issuance of warrants in connection with borrowings from 
Technologies and pursuant to the Bridge Financing, the Company anticipates 
that it will record approximately $900,000 of non-cash interest expenses. 
These expenses are anticipated to be incurred in the third and fourth quarter 
of 1996. The Company also expects to incur approximately $200,000 of non-cash 
compensation expense related to the difference between the exercise price and 
deemed fair value of the Common Stock underlying vested options granted in 
July and August 1996. See "Note 10" and "Note 13" to "Notes to Financial 
Statements." 

Fluctuations in Operating Results; Substantial Revenues Derived from Limited 
Customers. 

   The Company's operating results may vary significantly from quarter to 
quarter or year to year, depending on factors such as the timing of product 
development, the timing of increased research and development and sales and 
marketing expenses, the timing and size of orders and the introduction of new 
products by the Company. The Company's current and planned expense levels are 
based in part on its expectations as to future revenue. Consequently, revenue 
or profit may vary significantly from quarter to 

                                      9 
<PAGE> 

   
quarter or year to year and revenue or profit in any period will not 
necessarily be predictive of results in subsequent periods. Historically, a 
significant portion of the Company's revenues have been derived from a 
limited number of relatively large development projects contracted for by a 
small number of customers. Sales to Systems Engineering Solutions, Inc. 
("SES"), SystemHouse and the Office of Research and Development ("ORD") 
during the six months ended June 30, 1996 accounted for 33%, 32% and 18%, 
respectively, of the Company's sales for such period. Sales to the Markle 
Foundation ("Markle"), ORD and SystemHouse during the fiscal year ended 
December 31, 1995 accounted for 27%, 14% and 13%, respectively, of the 
Company's sales for such period. Sales to Markle and Coopers during the 
fiscal year ended December 31, 1994 accounted for 59% and 17%, respectively, 
of the Company's sales for such period. Such customers are not affiliated 
with the Company. The Company does not believe that it is materially 
dependent upon sales to these customers. Contracts with such customers have 
been fully or substantially completed as of September 30, 1996. The Company 
historically has not had and at September 30, 1996 did not have any 
substantial firm order backlog. To the extent that the Company's business 
continues to be derived from a limited number of large customer orders, any 
inability by the Company as it completes such orders to obtain new orders 
could have a material adverse effect on the Company's business, financial 
condition and results of operations. The Company is currently working on a 
limited number of customer orders. There can be no assurance that the Company 
will obtain additional sources of revenue prior to completing such projects. 
See "Management's Discussion and Analysis of Financial Condition and Results 
of Operations." 
    

Technological Change; Risk of Obsolescence; Industry Standards. 

   The software industry is characterized by rapid technological change, 
frequent introductions of new products, changes in customer demands and 
evolving industry standards. The introduction of products embodying new 
technology or the adaption of products to the market and the emergence of new 
industry standards often render existing products obsolete and unmarketable. 
The Company believes that its success will depend on its ability to enhance 
its existing products and otherwise respond and keep pace with technological 
developments and emerging industry standards. There can be no assurance that 
the Company will be successful in developing enhanced or new products that 
respond to technological changes or evolving industry standards in a timely 
manner, or at all. Additionally, there can be no assurance that technological 
changes or evolving industry standards will not render the Company's products 
and technologies obsolete. See "Business--Intellectual Property." 

Uncertainties Regarding Intellectual Property. 

   The Company does not have any patents and has not filed patent 
applications on its products. The Company regards the software that it owns 
or licenses as proprietary and relies primarily on a combination of trade 
secret laws, nondisclosure agreements and other technical copy protection 
methods (such as embedded coding) to protect its rights to its products and 
proprietary rights. It is the Company's policy that all employees and 
third-party developers sign nondisclosure agreements; however, this may not 
afford the Company sufficient protection for its know-how and its proprietary 
products. Other parties may develop similar know-how and products, duplicate 
the Company's know-how and products or develop patents that would materially 
and adversely affect the Company's business, financial condition and results 
of operations. Third parties may assert infringement claims against the 
Company, and such claims may result in the Company being required to enter 
into royalty arrangements, pay damages or defend litigation, any of which 
could materially and adversely affect the Company's business, financial 
condition and results of operations. See "Business--Intellectual Property." 

Competition. 

   There can be no assurance that other companies will not develop programs 
such as those offered by the Company or alternative software applications 
which meet the same needs of customers or that potential customers will not 
choose to meet their needs through in-house development rather than by 
purchasing the 

                                      10 
<PAGE> 

Company's products. The Company expects to be subject to competition from 
companies with substantially greater resources. There can be no assurance 
that the Company will be able to respond to competitive pressures, or that 
the effect of competitive pressures will not change the demand for, or 
pricing of, the Company's products and services. To the extent that 
competitors achieve performance, price or other selling advantages, the 
Company could be adversely affected. There can be no assurance that the 
Company will have the resources required to respond effectively to market or 
technological changes or to otherwise compete successfully in the future. See 
"Business--Competition." 

Dependence on Key Personnel. 

   The Company is dependent upon the continued efforts and abilities of its 
senior management, particularly those of Mr. John Hiles, the Company's 
President. The Company has entered into an Employment Agreement with Mr. 
Hiles which is subject to automatic annual renewals unless terminated by the 
Company or Mr. Hiles upon ninety days' prior written notice. The loss or 
unavailability of Mr. Hiles for any significant period could have a material 
adverse effect on the Company's business, financial condition and results of 
operations. The Company maintains a $5,000,000 key-man life insurance policy 
on Mr. Hiles. The Company's operations are also dependent upon its ability to 
attract and retain qualified programmers and software engineers. There can be 
no assurance that the Company will be able to attract and retain such skilled 
personnel, and failure to do so could have a material adverse effect on the 
business, financial condition and results of operations of the Company. All 
employees of the Company are at-will employees. See "Management." 

Control by Existing Stockholders. 

   Upon the closing of this Offering, the Company's existing stockholders 
will beneficially own approximately 72.8% of the outstanding shares of Common 
Stock. As a result of such ownership, the existing stockholders of the 
Company will, therefore, have the ability to control the election of the 
directors of the Company and the outcome of all issues submitted to a vote of 
the stockholders of the Company. See "Principal Stockholders." 

Broad Discretion as to Use of Proceeds. 

   Approximately 20.8% of the net proceeds of this Offering has been 
allocated to working capital and general corporate purposes and will be used 
for such specific purposes as management may determine. Accordingly, 
management will have broad discretion with respect to the expenditure of that 
portion of the net proceeds of this Offering. In addition, the Company's 
estimate of its allocation of the use of proceeds of this Offering is subject 
to a reapportionment of proceeds among the categories set forth herein or to 
new categories. Approximately 23.1% of the net proceeds will be used to repay 
the principal amount of the Bridge Notes, along with estimated accrued 
interest thereon through the estimated closing date of this Offering. The 
amount and timing of expenditures will vary depending upon a number of 
factors, including the progress of the Company's product development and 
marketing efforts, changing competitive conditions and general economic 
conditions. See "Use of Proceeds." 

Need For Additional Financing. 

   The Company anticipates that the net proceeds of this Offering together 
with its existing resources, will be adequate to satisfy its operating and 
capital requirements through at least the next 18 months, based on the 
Company's current business plan. Such belief is based upon certain 
assumptions, and there can be no assurance that such assumptions are correct. 
However, the Company does not expect that it will be able to continue its 
operations beyond this time without additional financing. There can be no 
assurance that such additional financing will be available when needed on 
terms acceptable to the Company or at all. See "Management's Discussion and 
Analysis of Financial Condition and Results of Operations." 

Absence of Public Market; Negotiated Offering Price. 

   
   Prior to this Offering, there has been no public market for the Common 
Stock, and there can be no assurance that any trading market therefor will 
develop or, if any such market develops, that it will be sustained. 
Accordingly, purchasers of the Shares may experience difficulty selling or 
otherwise disposing of 
    


                                      11 
<PAGE> 

their Shares. The public offering price of the Shares has been established by 
negotiation between the Company and the Underwriter and does not bear any 
relationship to the Company's book value, assets, past operating results, 
financial condition or other established criteria of value. 

NASDAQ Delisting; Low Stock Price. 

   The trading of the Company's Securities on NASDAQ will be conditioned upon 
the Company meeting certain asset, capital and surplus earnings and stock 
price tests set forth by such exchanges. To maintain eligibility for trading 
on NASDAQ, the Company will be required to maintain total assets in excess of 
$2,000,000, capital and surplus in excess of $1,000,000 and (subject to 
certain exceptions) a bid price of $1.00 per share. Upon completion of this 
Offering and the receipt of the proceeds therefrom, the Company believes that 
it will meet the respective asset, capital and surplus earnings tests set 
forth by such exchanges. If the Company fails any of the tests, the Common 
Stock may be delisted from trading on such exchanges. The effects of 
delisting include the limited release of the market prices of the Company's 
securities and limited news coverage of the Company. Delisting may restrict 
investors' interest in the Company's securities and materially adversely 
affect the trading market and prices for such securities and the Company's 
ability to issue additional securities or to secure additional financing. In 
addition to the risk of volatile stock prices and possible delisting, low 
price stocks are subject to the additional risks of federal and state 
regulatory requirements and the potential loss of effective trading markets. 
In particular, if the Common Stock were delisted from trading on such 
exchanges and the trading price of the Common Stock was less than $5 per 
share, the Common Stock could be subject to Rule 15g-9 under the Securities 
Exchange Act of 1934, as amended, which, among other things, requires that 
broker/dealers satisfy special sales practice requirements, including making 
individualized written suitability determinations and receiving purchasers' 
written consent, prior to any transaction. If the Company's securities could 
also be deemed penny stocks under the Securities Enforcement and Penny Stock 
Reform Act of 1990, this would require additional disclosure in connection 
with trades in the Company's securities, including the delivery of a 
disclosure schedule explaining the nature and risks of the penny stock 
market. Such requirements could severely limit the liquidity of the Company's 
securities and the ability of purchasers in this Offering to sell their 
securities in the secondary market. 

Future Sales of Restricted Securities. 

   Upon the completion of this Offering, the Company will have 4,431,758 
shares of Common Stock outstanding (4,641,758, if the Over-Allotment Option 
is exercised in full). Of these shares, all of the 1,400,000 shares of Common 
Stock sold in this Offering (1,610,000, if the Over-Allotment Option is 
exercised in full) generally will be freely transferable by persons other 
than affiliates of the Company, without restriction or further registration 
under the Securities Act of 1933, as amended (the "Securities Act"). The 
remaining 3,031,758 shares of Common Stock (the "Restricted Shares") 
outstanding were sold by the Company in reliance on exemptions from the 
registration requirements of the Securities Act and are "restricted 
securities" as defined in Rule 144 under the Securities Act. The sale of a 
substantial number of shares of Common Stock or the availability of Common 
Stock for sale could adversely affect the market price of the Common Stock 
prevailing from time to time. The Company, its officers, directors and 
existing stockholders have entered into agreements with the Underwriter which 
prohibit them from selling stock in the Company for certain periods of time 
following this Offering without the prior written consent of the Underwriter. 
See "Principal Stockholders," "Shares Eligible for Future Sale" and 
"Underwriting." 

Effect of Previously Issued Options, Warrants and Underwriter's Options on 
Stock Price. 

   The Company has reserved from the authorized, but unissued, Common Stock, 
376,000 shares of Common Stock for issuance to key employees, officers, 
directors, and consultants pursuant to the Plan, has reserved 456,250 shares 
of Common Stock for issuance upon exercise of the Bridge Warrants and 468,242 
shares of Common Stock issuable upon exercise of the Technologies Warrants. 
The Company will also sell to the Underwriter, in connection with this 
Offering, for nominal consideration, the Underwriter's Options 

                                      12 
<PAGE> 

   
to purchase an aggregate of 140,000 shares of Common Stock at a price per 
share equal to 160% of the initial public offering price per share, subject 
to adjustment as provided therein. The existence of the Bridge Warrants, the 
Technologies Warrants, the Underwriter's Options, any outstanding options 
issued under the Plan, and other options or warrants may prove to be a 
hindrance to future financings, since the holders of such warrants and 
options may be expected to exercise them at a time when the Company would 
otherwise be able to obtain additional equity capital on terms more favorable 
to the Company. In addition, the holders of such securities have certain 
registration rights, and the sale of the shares issuable upon exercise of 
such securities or the availability of such shares for sale could adversely 
affect the market price of the Common Stock. Additionally, if the holders of 
the Underwriter's Options were to exercise their registration rights to 
effect a distribution of the Underwriter's Options or underlying securities, 
the Underwriter, prior to and during such distribution, would be unable to 
make a market in the Company's securities and would be required to comply 
with other limitations on trading set forth in Rules 10b-2, 10b-6 and 10b-7 
promulgated under the Securities Exchange Act of 1934, as amended. Such rules 
restrict the solicitation of purchasers of a security when a person is 
interested in the distribution of such security and also limit market making 
activities by an interested person until the completion of the distribution. 
If the Underwriter were required to cease making a market, the market and 
market price for such securities may be adversely affected and holders of 
such securities may be unable to sell such securities. See "Description of 
Securities" and "Underwriting." 
    

Share Prices May Be Highly Volatile. 

   The market prices of equity securities of computer technology and software 
companies have experienced extreme price volatility in recent years for 
reasons not necessarily related to the individual performance of specific 
companies. Accordingly, the market price of the Common Stock following this 
Offering may be highly volatile. Factors such as announcements by the Company 
or its competitors concerning products, patents, technology, governmental 
regulatory actions, other events affecting computer technology and software 
companies generally as well as general market conditions may have a 
significant impact on the market price of the Common Stock and could cause it 
to fluctuate substantially. 

Dilution. 

   The assumed initial public offering price per Share exceeds the book value 
per share of the Common Stock. Investors in this Offering will therefore 
incur immediate and substantial dilution of $5.39, or 77% per share from the 
initial public offering price. See "Dilution." 

Lack of Dividends. 

   The Company has not paid any dividends on the Common Stock since its 
inception and does not intend to pay any dividends to its stockholders in the 
foreseeable future. The Company currently intends to reinvest earnings, if 
any, in the development and expansion of its business. See "Dividend Policy" 
and "Description of Securities--Common Stock." 

Anti-Takeover Effects of Certain Provisions of Certificate of Incorporation 
and Delaware Law. 

   The Company's Certificate of Incorporation authorized the issuance of 
3,000,000 shares of undesignated Preferred Stock with such designations, 
rights and preferences as may be determined from time to time by the board of 
directors. Accordingly, the board of directors is empowered, without 
obtaining stockholder approval, to issue such Preferred Stock with dividend, 
liquidation, conversion, voting or other rights that could adversely affect 
the voting power or other rights of the holders of the Common Stock. In the 
event of issuance, the Preferred Stock could be utilized, under certain 
circumstances, as a method of discouraging, delaying or preventing a change 
in the control of the Company. Certain provisions of Delaware law may also 
discourage third party attempts to acquire control of the Company. See 
"Description of Securities--Preferred Stock." 

                                      13 
<PAGE> 

                               USE OF PROCEEDS 

   The net proceeds from the sale of the Common Stock offered hereby, at an 
assumed initial offering price of $7.00 per share, and after deducting 
underwriting discounts and commissions and other expenses of this Offering, 
estimated to be, in the aggregate, $1,774,000, are estimated to be $8,026,000 
($9,304,900 if the Over-Allotment Option is exercised in full). 

   The Company intends to use the net proceeds of this Offering (i) to fund 
the Company's sales and marketing efforts, (ii) to fund the Company's product 
development efforts, (iii) to fund the retirement of the Bridge Notes and 
(iv) for working capital and general corporate purposes, approximately as 
follows: 

<TABLE>
<CAPTION>
                                                     Approximate   Percentage of 
                        Use                            Amount       Net Proceeds 
- -------------------------------------------------- --------------  --------------- 
<S>                                                  <C>               <C>
Sales and marketing                                  $3,000,000         37.4% 
Product development                                   1,500,000         18.7% 
Repayment of debt                                     1,855,000         23.1% 
General corporate and working capital purposes        1,671,000         20.8% 
                                                   --------------  --------------- 
                                                     $8,026,000        100.0% 
                                                   ==============  =============== 
</TABLE>

   The Company intends to use approximately $3,000,000 of the net proceeds to 
fund expansion of its sales and marketing activities, including hiring a 
senior sales and marketing executive, sales representatives and other sales 
and marketing personnel. See "Business--Marketing and Sales Strategy." 

   The Company intends to use approximately $1,500,000 of the net proceeds 
for research and product development, including support of existing research 
and development activities and the development of new products. See 
"Business--Product Development." 

   Approximately $1,855,000 of the net proceeds will be used to repay the 
principal amount of the Bridge Notes, along with estimated accrued interest 
thereon through the estimated closing date of this Offering. The Bridge Notes 
bear interest at a rate of 10% per annum, compounded annually, and are due 
upon the closing of this Offering. The Bridge Notes were sold as units along 
with the Bridge Warrants in the Bridge Financing. The Company utilized a 
portion of the net proceeds from the Bridge Financing (with related expenses 
of approximately $258,000) to repay $625,000 of outstanding indebtedness to 
Technologies, which amount was immediately utilized by Technologies for the 
purchase of $625,000 aggregate principal amount of Bridge Notes in the Bridge 
Financing. As a result, the Company realized approximately $942,000 of net 
proceeds from the Bridge Financing, which funds are being used to finance the 
Company's short term working capital needs and to fund expenses of the 
Company in connection with this Offering. See "Certain Transactions." 

   The balance of the net proceeds of this Offering are intended to be used 
for general corporate and working capital purposes. Any net proceeds received 
by the Company from the exercise of the Over-Allotment Option or the 
Underwriter's Options will be added to working capital. 

   The foregoing represents the Company's best estimate of its allocation of 
the estimated net proceeds of this Offering and is subject to a 
reapportionment of proceeds among the categories listed above or to new 
categories in response to, among other things, changes in its plans, 
regulations, industry conditions, and future revenues and expenditures. The 
amount and timing of expenditures will vary depending on a number of factors, 
including changes in the Company's contemplated operations or business plan 
and changes in economic and industry conditions. 

   Until used, the Company intends to invest the net proceeds of this 
Offering in short term, interest bearing, investment grade, debt securities, 
money market accounts, certificates of deposit or direct or guaranteed 
obligations of the United States government. 

                                      14 
<PAGE> 

                               DIVIDEND POLICY 

   The Company expects that it will retain all earnings, if any, generated by 
its operations for the development and growth of its business and does not 
anticipate paying any cash dividends to its stockholders in the foreseeable 
future. Any future determination as to dividend policy will be made by the 
board of directors of the Company in its discretion, and will depend on a 
number of factors, including the future earnings, if any, capital 
requirements, financial condition and business prospects of the Company and 
such other factors as the board of directors may deem relevant. See "Risk 
Factors--Lack of Dividends." 

                                   DILUTION 

   As of June 30, 1996, the Company had a pro forma net tangible book value 
(deficit) of approximately ($325,000), or ($0.11) per share of Common Stock. 
Without taking into account any other changes in the pro forma net tangible 
book value of the Company after June 30, 1996, other than to give effect to 
the sale by the Company of the Shares offered hereby at an assumed initial 
offering price of $7.00 per share and the receipt and application of the 
estimated net proceeds therefrom (including repayment of the Bridge Notes and 
accrued cash interest thereon), the pro forma net tangible book value would 
have been approximately $7,121,000, or $1.61 per share, which represents an 
immediate increase in the pro forma net tangible book value of $1.72 per 
share to present stockholders and an immediate dilution of $5.39 or 77% per 
share to new investors. The following table illustrates this dilution: 

<TABLE>
<CAPTION>
                                                                         Per Share of 
                                                                         Common Stock 
                                                                        --------------- 
<S>                                                            <C>           <C>
Assumed initial public offering price per Share (1)                          $7.00 
Pro forma net tangible book value (deficit) before this 
  Offering                                                     $(0.11) 
Increase attributable to purchase of Shares by new 
  investors                                                      1.72 
                                                              --------- 
Pro forma net tangible book value per share after this 
  Offering                                                                    1.61 
                                                                        --------------- 
Dilution of net tangible book value to investors in this 
  Offering                                                                   $5.39 
                                                                        =============== 
</TABLE>

(1) Represents the initial public offering price per Share, before deducting 
    underwriting discounts and offering expenses payable by the Company. 

                                      15 
<PAGE> 

   The following table summarizes, on a pro forma basis as of June 30, 1996, 
the differences between existing stockholders and investors in this Offering 
with respect to the number and percentage of shares of Common Stock purchased 
from the Company, the amount and percentage of consideration paid and the 
average price paid per Share, before deduction of offering expenses and 
underwriting discounts: 

<TABLE>
<CAPTION>
                                                                                   Average 
                               Shares Owned                Consideration          Price Per 
                        -------------------------- ----------------------------     Share 
                           Number      Percentage      Amount       Percentage 
                        ------------ ------------- -------------- ------------- 
<S>                       <C>            <C>         <C>              <C>          <C>
Existing Stockholders     3,031,758       68.4%      $  1,413,000      12.6%       $  .47 
New Investors             1,400,000       31.6%      $  9,800,000      87.4%       $ 7.00 
                        ------------ ------------- -------------- -------------  ------------ 
Total                     4,431,758      100.0%      $11,213,000      100.0% 
                        ============ ============= ============== ============= 
</TABLE>

   The foregoing table does not include (i) 456,250 shares of Common Stock 
issuable upon the exercise of the Bridge Warrants at an exercise price equal 
to the lesser of $4.20 or 60% of the initial public offering price per share; 
(ii) 468,242 shares of Common Stock issuable upon exercise of the 
Technologies Warrants, at an exercise price of $1.07 per share; (iii) 376,000 
shares of Common Stock reserved for issuance under the Plan, options to 
purchase 145,036 of which have been granted under the Plan, including options 
to purchase 52,000 shares exercisable at $.79 per share and options to 
purchase 52,000 shares exercisable at $5.00 per share granted to certain of 
the Company's employees, and options to purchase 41,036 shares of Common 
Stock at an exercise price of $1.00 per share granted to certain members of 
the Company's board of directors; (iv) 58,964 shares of Common Stock reserved 
and issuable upon exercise of options granted outside the Plan to certain 
members of the Company's board of directors at an exercise price of $0.79 per 
share and (v) 15,000 shares of Common Stock issuable upon exercise of options 
granted outside the Plan to a non-affiliate of the Company at an exercise 
price of $1.00 per share. The exercise of any of such options and warrants 
will have a dilutive effect upon investors in this Offering. See 
"Management--1996 Stock Option Plan," "Certain Transactions," and 
"Description of Securities." 

                                      16 
<PAGE> 

                                CAPITALIZATION 

   The following table sets forth the capitalization of the Company (i) as of 
June 30, 1996, (ii) as of June 30, 1996 on a pro forma basis assuming the 
issuance of $1,825,000 aggregate principal amount of Bridge Notes and the 
Conversion and (iii) on a pro forma as adjusted basis to reflect the sale of 
1,400,000 shares of Common Stock by the Company offered hereby at an assumed 
initial public offering price of $7.00 per share and the application of the 
estimated net proceeds therefrom. See "Use of Proceeds." This table should be 
read in conjunction with "Management's Discussion and Analysis of Financial 
Condition and Results of Operations" and the Financial Statements of the 
Company and notes thereto appearing elsewhere in this Prospectus. 

<TABLE>
<CAPTION>
                                                                       June 30, 1996 
                                                         ---------------------------------------- 
                                                                                     Pro Forma 
                                                          Actual(1)  Pro Forma(2)  As Adjusted(3) 
                                                          --------- -------------  --------------- 
                                                             (In thousands, except share data) 
<S>                                                        <C>         <C>            <C>     
Short Term Debt, including Capital Lease Obligations       $    449    $ 1,373        $     98 
                                                          ========= =============  =============== 
Long Term Notes Payable 
   and Capital Lease Obligations                             1,399          19             19 
Preferred Stock, $.001 par value, 3,000,000    shares 
authorized; no shares issued and    outstanding actual, 
pro forma and as adjusted                                       --          --             -- 
Common Stock, $.001 par value, 20,000,000 
   shares authorized; 2,768,600 shares issued and 
   outstanding actual; 3,031,758 shares issued and 
   outstanding, pro forma; and 4,431,758 shares 
   issued and outstanding, as adjusted(4)                        3           3              4 
Additional Paid-in Capital                                      89       2,510         10,535 
Accumulated Deficit                                         (1,997)     (2,838)        (3,418) 
   Total Stockholders' Equity (Deficit)                     (1,905)       (325)         7,121 
                                                          --------- -------------  --------------- 
   Total Capitalization                                    $  (506)    $  (306)       $ 7,140 
                                                          ========= =============  =============== 
</TABLE>

(1) Gives effect to the Merger. See "Note 1" to "Notes to Financial 
    Statements." 

(2) Pro forma to give effect to (i) additional loan advances to the Company 
    from Technologies in the aggregate principal amount of $150,691 received 
    in July, 1996; (ii) the accrual of $381,845 of interest on the Company's 
    indebtedness to Technologies through August 27, 1996 (including non-cash 
    interest expense of $350,000 resulting from the issuance of the 
    Technologies Warrants); (iii) the conversion by the Company of debt in 
    the principal amount of approximately $1,320,000 into an aggregate of 
    263,158 shares of Common Stock pursuant to the Conversion, with the 
    remaining $60,000 of note payable reclassified to accrued expenses ; (iv) 
    non-cash compensation expense of $200,000 resulting from the difference 
    between the grant price and the deemed fair value of the Common Stock 
    underlying vested options granted in July and August, 1996 and (v) the 
    issuance of $1,825,000 aggregate principal amount of Bridge Notes (with 
    related expenses of approximately $258,000) of which $625,000 was 
    purchased by Technologies, the application of the estimated net proceeds 
    therefrom, and $550,000 of debt discount resulting from the issuance of 
    the Bridge Warrants, a portion of which was utilized to repay $625,000 of 
    outstanding indebtedness to Technologies. See "Certain Transactions" and 
    "Note 10" and "Note 13" to "Notes to Financial Statements." 

(3) Adjusted to give effect to (i) the sale by the Company of the 1,400,000 
    shares of Common Stock offered hereby at an assumed initial public 
    offering price of $7.00 per share and the application of the estimated 
    net proceeds therefrom and (ii) interest expense of $579,000 (including 
    non-cash interest expense of $550,000 resulting from the issuance of the 
    Bridge Warrants). See "Use of Proceeds" and "Note 10" and "Note 13" to 
    "Notes to Financial Statements." 

                                      17 
<PAGE> 

(4) Does not include (i) 456,250 shares of Common Stock issuable upon 
    exercise of the Bridge Warrants at an exercise price equal to the lesser 
    of $4.20 or 60% of the initial public offering price per share in this 
    Offering; (ii) 468,242 shares of Common Stock issuable upon exercise of 
    the Technologies Warrants, at an exercise price of $1.07 per share; (iii) 
    376,000 shares of Common Stock reserved for issuance under the Plan, 
    options to purchase 145,036 of which have been granted under the Plan, 
    including options to purchase 52,000 shares exercisable at $.79 per share 
    and options to purchase 52,000 shares exercisable at $5.00 per share 
    granted to certain of the Company's employees, and options to purchase 
    41,036 shares of Common Stock at an exercise price of $1.00 per share 
    granted to certain members of the Company's board of directors; (iv) 
    58,964 shares of Common Stock reserved and issuable upon exercise of 
    options granted outside the Plan to certain members of the Company's 
    board of directors at an exercise price of $0.79 per share and (v) 15,000 
    shares of Common Stock issuable upon exercise of options granted outside 
    the Plan to a non-affiliate of the Company at an exercise price of $1.00 
    per share. See "Management--Stock Option Plan," "Certain Transactions," 
    and "Description of Securities." 

                                      18 
<PAGE> 

                   MANAGEMENT'S DISCUSSION AND ANALYSIS OF 
                FINANCIAL CONDITION AND RESULTS OF OPERATIONS 

   The following discussion should be read in conjunction with the 
accompanying financial statements and notes thereto appearing elsewhere in 
this Prospectus. 

Overview 

   Thinking Tools commenced operations in December 1993 to develop and market 
business simulation software. Since its inception, the Company has been 
engaged in research and development activities and organizational efforts, 
including the development of its initial products, recruiting personnel, 
establishing marketing and manufacturing capabilities and raising capital. 

   
   Thinking Tools commenced commercial activities in January 1994, but to 
date has not generated substantial revenues from the sale of its products. 
Revenues generated to date have been primarily derived from software 
development projects completed under contracts with customers. Historically, 
a significant portion of such revenues have been derived from a limited 
number of relatively large development projects contracted for by a small 
number of customers. Sales to SES, SystemHouse and ORD during the six months 
ended June 30, 1996 accounted for 33%, 32% and 18%, respectively, of the 
Company's sales for such period. Sales to Markle, ORD and SystemHouse during 
the fiscal year ended December 31, 1995 accounted for 27%, 14% and 13%, 
respectively, of the Company's sales for such period. Sales to Markle and 
Coopers during the fiscal year ended December 31, 1994 accounted for 59% and 
17%, respectively, of the Company's sales for such period. Such customers are 
not affiliated with the Company. The Company does not believe that it is 
materially dependent upon sales to these customers. Contracts with such 
customers have been fully or substantially completed as of September 30, 
1996. The Company historically has not had and at September 30, 1996 did not 
have any substantial firm order backlog. To the extent that the Company's 
business continues to be derived from a limited number of large customer 
orders, any inability by the Company as it completes such orders to obtain 
new orders could have a material adverse effect on the Company's business, 
financial condition and results of operations. The Company is currently 
working on a limited number of customer orders. There can be no assurance 
that the Company will obtain additional sources of revenue prior to 
completing such projects. The Company's current strategy is to change its 
focus from custom projects to self-funded development of simulations for 
broader markets by leveraging its existing products and technology platform 
to become a product-oriented, sales-driven company. See "Business--Growth 
Strategy" and "Risk Factors--Fluctuations in Operating Results; Substantial 
Revenues Derived from Limited Customers." 
    

   As of June 30, 1996, the Company had experienced cumulative losses of 
$1,997,000 and had not experienced any quarter of profitable operations. The 
Company expects to incur additional operating losses for the foreseeable 
future. The Company's operations to date have been funded primarily through 
private sales of debt and equity securities. 

   Thinking Tools expects to incur substantial operating expenses in the 
future to support its development costs, expand its sales and marketing 
capabilities and organization, expand its work force and for other general 
and administrative expenses. The Company's results of operations may vary 
significantly from quarter to quarter during this period of development. 

Results of Operations 

   Comparison of six months ended June 30, 1996 and June 30, 1995 

   Revenues. Revenues for the six months ended June 30, 1996 decreased by 
$42,000, or 6%, to $634,000, from $676,000, for the six months ended June 30, 
1995. During each of such periods the Company's revenues were derived 
primarily from a relatively small number of development contracts. See 
"Business--Customers." 

   Gross Margin. Gross margin for the six months ended June 30, 1996 were 44% 
of revenues as compared with 45% of revenues for the six months ended June 
30, 1995. 

                                      19 
<PAGE> 

   Selling, General and Administrative Expenses. Selling, general and 
administrative expenses increased by $175,000, or 49%, for the six months 
ended June 30, 1996 to $532,000, or 84% of revenues, from $357,000, or 53% of 
revenues, for the six months ended June 30, 1995. Selling expenses included 
costs of preparing project proposals and software demonstrations. General and 
administrative expenses consisted primarily of labor costs and consulting 
expenses. The increase in selling, general and administrative expenses was 
primarily due to increased consulting expenses, travel expenses, new 
insurance policy premiums, recruiting fees and increased involvement by the 
Company's technical development team in the preparation of Company's 
proposals and presentations. 

   Upon completion of this Offering, the Company intends to hire additional 
personnel to expand the Company's marketing and sales capabilities. See 
"Business--Marketing and Sales Strategy." Additionally, the Company expects 
general and administrative expenses to increase in future periods as the 
Company incurs additional costs related to being a public company and expands 
its staff and facilities. 

   Research and Development. Research and development expenses for the six 
months ended June 30, 1996 decreased by $114,000, or 66%, to $60,000, or 9% 
of revenues, from $174,000, or 26% of revenues, for the six months ended June 
30, 1995. This decrease was primarily due to the shifting of development 
efforts from initial internal software development to customer software 
development contracts. 

   As the Company's business strategy shifts from custom development projects 
to product sales, the Company expects that research and development expenses 
will increase. See "Business--Growth Strategy" and "Risk Factors--Risks 
Associated with Growth Strategy." 

   Interest Expense. Interest expense for the six months ended June 30, 1996 
increased by $17,000, or 28%, to $77,000, or 12% of revenues from $60,000, or 
9% of revenues, for the six months ended June 30, 1995. This increase was 
primarily due to the conversion of $180,000 of accrued interest due to 
Technologies into debt, borrowings of $52,100 under a bank line of credit and 
an additional loan from Technologies in the amount of $352,000, which loans 
bear interest at rates of 10%, prime plus 5% and prime plus 7%, respectively. 

   Other Income. Other income for the six months ended June 30, 1996 
increased by $33,000, or 330% to $43,000, or 7% of revenues from $10,000, or 
1% of revenues, for the six months ended June 30, 1995. This increase was 
primarily due to an increase in fees received for assisting customers with 
product presentations and demonstrations in connection with the resale by 
such customers of the Company's products. 

   Net Loss. As a result of the foregoing, net loss for the six months ended 
June 30, 1996 increased by $66,000, or 24%, to $346,000 from $280,000 for the 
six months ended June 30, 1995. 

   Comparison of years ended December 31, 1995 and 1994 

   Revenues. Revenues for the year ended December 31, 1995 ("Fiscal 1995"), 
increased by $483,000, or 57%, to $1,329,000 from $846,000 for the year ended 
December 31, 1994 ("Fiscal 1994"). This increase was primarily due to an 
increase during Fiscal 1995 in the number of contract projects. See 
"Business--Customers." 

   Gross Margin. Gross margin for Fiscal 1995 increased to 47% of revenues 
from 13% of revenues for Fiscal 1994. This increase was partially due to 
improved control of project costs in Fiscal 1995 as well as more skillful 
pricing and contract negotiating. Overruns on two projects in 1994 (both 
incurring losses) reflected the unanticipated high level of costs involved in 
developing the Company's complex agent-based simulation software. 

   Selling, General and Administrative Expenses. Selling, general and 
administrative expenses for Fiscal 1995 increased by $356,000, or 90%, to 
$751,000, or 57% of revenues, from $395,000, or 47% of revenues, for Fiscal 
1994. This increase was primarily attributable to increased labor costs and 
consulting 

                                      20 
<PAGE> 

expenses in connection with the Company's efforts to establish a management 
team and increases in travel expenses and insurance policy premiums. 

   Research and Development. Research and development expenses for Fiscal 
1995 decreased by $61,000, or 16%, to $328,000, or 25% of revenues, from 
$389,000, or 46% of revenues, for Fiscal 1994. This decrease reflected the 
increased maturity of the Company's agent-based simulation development tools 
and techniques. 

    Interest Expense. Interest expense for Fiscal 1995 increased by $84,000, or
150%, to $140,000, or 11% of revenues, from $56,000, or 7% of revenues, for
Fiscal 1994. This increase was primarily due to the borrowing from Technologies
of $1,200,000 in September 1994 and, during the second half of Fiscal 1995
borrowings under a bank line of credit with an outstanding balance as of
December 31, 1995 of $79,000 and from Technologies with an outstanding balance
as of December 31, 1995 of $122,000, which loans bear interest at rates of 10%,
prime plus 1.75% and 7%, respectively.

   Other Income. Other income for Fiscal 1995 increased to $10,000 from none 
in Fiscal 1994, which increase resulted from an insurance payment on property 
losses. 

   Net Loss. As a result of the foregoing, net loss for Fiscal 1995 decreased 
by $142,000 or 19%, to $589,000 from $731,000 for Fiscal 1994. 

Liquidity and Capital Resources 

   Since its inception and through December 31, 1995 and June 30, 1996, the 
Company has incurred cumulative losses aggregating approximately $1,650,000 
and $1,997,000, respectively, and has not experienced any quarter of 
profitable operations. The Company expects to continue to incur operating 
losses for the foreseeable future, principally as a result of expenses 
associated with the Company's product development efforts and anticipated 
sales, marketing and general and administrative expenses. During the past two 
fiscal years, the Company has satisfied its cash requirements principally 
from advances from stockholders and private sales of equity securities and, 
to a limited extent, from cash flows from operations. The primary uses of 
cash have been to fund research and development and for sales, general and 
administrative expenses. 

   At June 30, 1996, the Company had cash of approximately $7,000 and a 
working capital deficit of approximately $617,000. As of the date hereof, the 
Company's total debt obligations (exclusive of trade credit) consist 
primarily of $1,825,000 principal amount payable to the holders of the Bridge 
Notes. See "Certain Relationships and Related Transactions" and "Description 
of Securities-Bridge Notes." The Bridge Notes will be repaid using net 
proceeds of this Offering. See "Use of Proceeds." 

   Net cash used in operating activities for Fiscal 1994, Fiscal 1995 and the 
six months ended June 30, 1996 totalled approximately $490,000, $297,000 and 
$549,000, respectively. Net cash provided by financing activities for Fiscal 
1994, Fiscal 1995 and the six months ended June 30, 1996 totalled 
approximately $790,000, $195,000 and $405,000, respectively, reflecting the 
proceeds from borrowings from stockholders, offset by principal repayments of 
$500,000 and $27,000 in Fiscal 1994 and the six months ended June 30, 1996, 
respectively. 

   Based on the Company's operating plan, the Company believes that the net 
proceeds of this Offering, together with revenues from continuing operations, 
will be sufficient to satisfy its capital requirements and finance its 
operations for at least the next 18 months. Such belief is based upon certain 
assumptions, and there can be no assurance that such assumptions are correct. 
The Company may be required to raise substantial additional capital in the 
future in order to carry out its business plan. In addition, contingencies 
may arise which may require the Company to obtain additional capital. 
Accordingly, there can be no assurance that such resources will be sufficient 
to satisfy the Company's capital requirements for such period. The Company 
anticipates that any additional financing required to meet its current plans 
for 

                                      21 
<PAGE> 

expansion may take the form of the issuance of common or preferred stock or 
debt securities, or may involve other debt financing. Such financing may 
involve secured or unsecured debt financing. To the extent that the Company 
elects to obtain debt financing, the lender may impose certain restrictive 
covenants on the Company and upon any default by the Company on such debt 
financing, and a liquidation of the Company, the rights of such lender would 
be superior to the rights of the holders of Common Stock, including 
purchasers in this Offering. There can be no assurance that the Company will 
be able to obtain such additional capital on a timely basis, on favorable 
terms, or at all. In any of such events, the Company may be unable to 
implement its business plan. 

Inflation 

   The impact of general inflation on the Company's business has been 
insignificant to date and the Company believes that it will continue to be 
insignificant for the foreseeable future. 

                                      22 
<PAGE> 

                                   BUSINESS 

The Company 

   Thinking Tools develops powerful and flexible PC-based business simulation 
software programs that enable users to simulate real life business 
situations, explore complex operational problems and improve functional and 
problem solving skills. The Company's agent-based, adaptive simulation 
software has a broad range of potential business applications, including 
strategic planning, sales and marketing, training, competitive positioning, 
product marketing, operational planning, logistics and supply and demand 
forecasting. The Company believes that its products are unique because they 
combine user-friendly interactive interfaces used in sophisticated computer 
games with its proprietary agent-based programming to produce interactive 
adaptive business simulations. Agent-based, adaptive simulations can be used 
to model competitive situations, simulate consumer behavior, demonstrate the 
impact of management actions, seek system vulnerabilities and explore complex 
operational systems. The Company's user-friendly interfaces enable persons 
with no technical training to comfortably interact with complex systems. 

   The Company's agent-based programming enables autonomous agents in the 
simulation to respond to user behaviors in unpredictable and realistic ways. 
In contrast to other modelling and simulation tools in use and known to the 
Company, which are generally built around a limited number of agents acting 
according to pre-programmed, deterministic algorithms, the multiplicity of 
autonomous agents and the results of their interactions with each other and 
the user give the Company's simulations a complexity that mirrors human 
behavior found in the real world. 

   The Company's capabilities in developing highly sophisticated simulations 
are built upon experience gained from developing computer games, its skill in 
programming autonomous and adaptive agents and its large and growing library 
of reusable simulation objects. The Company's creative control is based on 
its proprietary development environment, WHITEBOARD, which supports interface 
building, object creation, simulation management, object management and 
application frameworks. WHITEBOARD simplifies and supports the construction 
of agent-based simulations and is the core of the development of each of the 
Company's simulations. 

   The Company was formed to purchase, on December 30, 1993, certain assets 
of the Division of Maxis, a leading computer game company and creator of the 
simulation game SimCity(tm). Through the purchase agreement with Maxis, the 
Company acquired the Division's equipment, staff, work-in-progress, 
customers, prospects, software tools, libraries and processes. 

Industry Overview 

   Simulations were among the earliest computer applications. Since the first 
days of digital computers, simulations using equations have been applied to 
scientific and engineering problems. Business simulations first began to 
appear shortly thereafter. Companies have attempted to simulate complex 
adaptive systems with models that were either fixed (deterministic) or 
stochastic (probability-based). Alternatively, they have developed their own 
custom systems based on executive information system (EIS) software packages. 
In all cases, the models lacked the adapting and evolving characteristics of 
real world systems; particularly because the most interesting business 
systems are made up of elements (e.g., customers, competitors and markets) 
that adapt their behaviors to each other. The elements in these systems 
modify their external behavior and internal structure in order to make more 
efficient use of their environments. Models based on formulae alone cannot 
effectively recreate these complex, adaptive systems. 

   In order to imitate these systems, models must themselves be adaptive. 
Some definitions will help to explain how this is accomplished: 

   (bullet) Object. A capsule of data and logic that are thematically 
related. 

                                      23 
<PAGE> 

   (bullet) Agent. An object that can act on its environment. 

   (bullet) Autonomous Agent. An agent that selects its behavior with the goal
            of achieving a better fit to the requirements of its environment.

   (bullet) Adaptive Agent. An agent that creates new behaviors in a non-random
            way with the goal of achieving a progressively better fit to the
            requirements of its environment.

   A fusion of techniques from biology (natural selection, evolution and 
genetics) and from computer science (cellular automata) led to early results 
in development of adaptive agents during the 1970's and up to the late 
1980's. The use of adaptive agents customizes the learning experience for 
each user by allowing the simulation to discern user vulnerabilities and 
confront the user with simulated events that focus on those weaknesses. This 
hostile environment introduces the challenges that a particular user needs 
most to understand. Simulation-based training using adaptive agents 
emphasizes diagnosis, planning and problem solving skills rather than rote 
learning or routine/automatic responses. 

   The Company believes that adaptive simulation methods are most effective 
in the following applications: 

   (bullet) Training. Adaptive simulation-based training focusing on real time
            diagnosis, planning and problem solving.

   (bullet) Rehearsal. Individual and group rehearsal of responses to simulated
            contingencies used to evaluate the users' ability to handle various
            emergencies.

   (bullet) Shared Awareness. Simulation of proposed uses of critical knowledge.
            Where does each department or employee fit; what does the business
            look like; what changes are necessary and why; what is the plan?

   (bullet) Hypothesis Testing and Rule Finding. Simulations that apply rules
            that govern the behavior of a critical system. What are the rules
            that govern the behavior of individual elements (e.g., customers
            within a market segment); and how do elements interact with each
            other?

   (bullet) Leverage Finding. Simulations that apply the present understanding
            of the system's condition and the rules for its elements. Where are
            the critical leverage points for creating big swings with economic
            application of force? How will the system amplify applications of
            force?

   The adaptive business simulation software industry is in its infancy. When 
computing power was prohibitively expensive, only the largest companies could 
hope to gain the benefit of sophisticated business simulation. But, as 
computing power has dropped in price, even small companies have come to 
possess hardware capable of supporting adaptive simulations, provided that 
the software is available. The market for adaptive simulation software is 
expected by the Company to continue to grow dramatically as the fixed cost of 
supporting hardware continues to drop. 

   The Company believes that the use of simulation models in the business 
world will continue to increase as a result of the following: 

   (bullet) Increasing use of computers to assist decision-makers with complex
            strategic issues, including operational support software for problem
            management and resolution.

   (bullet) Increasing corporate demand for more sophisticated forecasting tools
            than are provided by executive information systems and on-line
            analytical processing software.

                                      24 
<PAGE> 

   (bullet) Increasing recognition of models and simulations as cost-effective
            alternatives to specialized personnel in the areas of marketing and
            sales.

   (bullet) Increasing use of multi-media software to support collaboration
            among geographically separated workgroups.

   (bullet) Increasing PC performance allowing the use of advanced graphics and
            multi-media to represent business situations.

   (bullet) Increasing importance of competitive product positioning and
            shortening the development time for products.

The Thinking Tools Solution 

   The Company's approach to simulation is known as agent-based, adaptive 
simulation (as distinct from equation-based simulation). Agent-based methods 
involve software environments filled with many agents. As the agents interact 
they individually select behavior rules that guide their actions. These 
actions in turn influence the rule selections made by other agents. The 
behavior that results from the application of all of these individual 
behavior rules is called emergent behavior. 

   One example of emergent behavior is temperature. Although individual 
molecules in the atmosphere of a room have a location and velocity, they do 
not have temperature. Temperature results from the interactions of all of the 
molecules in the room's atmosphere. Temperature is a measure of emergent 
behavior. Emergent behavior is typically far more complex than the behavior 
of an individual agent particularly where the agents are adaptive. Emergent 
behavior simulation developed by the Company allows the behavior of a 
business process, organization or market to be simulated. 

   The Company has combined its experience in developing agent-based 
simulations with experience derived from the development of computer games 
and their human interface style. Most software presents the user with an 
information surface: users put information onto the surface and the software 
processes it, or the software puts information onto the surface and users 
make use of it. The human interface used in many computer games is an 
artificial environment created by software and reflected in a multi-media 
format. Users perceive and sometimes shape or manage the systems present in 
those places. This style is much more closely related to film or theater than 
to interfaces found in other types of software. In most of its projects to 
date, the Company has combined the use of agent-based methods and computer 
game interface techniques. The Company produces software products that are 
accessible and adaptive. These tools make it easy for users to become 
involved and assume a role in the system that they are exploring. 

   The Company's business process simulations treat complex management tasks 
which require almost continuous use of judgment, insight and problem solving 
skills, focusing on assisting users to develop these skills. The simulations 
also provide operational support that helps users as they plan and solve 
problems. These simulations promote the user's thinking about the complex 
systems upon which their operations depend. The Company believes that the 
principle competitive advantages of its products over other business process 
simulations are the adaptive nature of its simulations and its proprietary 
development interface, WHITEBOARD. WHITEBOARD supports interface building, 
object creation, simulation management, object management and application 
frameworks. 

Growth Strategy 

   The Company devoted its initial efforts to demonstrating the feasibility 
of the use of adaptive simulation for business applications by developing 
customized software programs for large clients pursuant to strategic 
distribution arrangements. The Company also assembled a highly-skilled 
technical team, established a growing library of reusable objects and 
enhanced its WHITEBOARD technology. 

                                      25 
<PAGE> 

   The Company's success in completing major projects for industry leaders 
who have validated the concept underlying the Company's technology, has 
positioned it to expand the scope of its operations to include the 
development of internally-funded software products and the direct marketing 
of the Company's products, in addition to continuing to selectively accepting 
projects funded by third parties. 

   The Company's goal is to develop a variety of simulations in divergent 
business areas. As a part of this strategy, the Company intends to undertake 
self-funded development of new simulations with broader market appeal and to 
adapt certain previously developed simulations, rights to which were retained 
by the Company, for sale as turnkey packages to new vertical markets. The 
Company will also, upon request, customize these packages on a project basis. 

   The Company plans to continue to expand its custom business selectively, 
while moving to invest in specific horizontal and vertical products and 
distribution channels aimed at the high end corporate and professional 
service markets. The Company intends to focus its custom business on projects 
that either allow for further development of an important technology on a 
paid basis, or facilitate the development of relationships with distribution 
partners which could provide benefits to the Company beyond the custom 
project. Custom projects will not be limited exclusively to the corporate 
sector, but may include the military and intelligence communities, because of 
their interest in leading edge technology. An important feature of the 
Company's "custom" strategy is to reduce the required amount of custom 
development for each product, and therefore its cost. The Company will seek 
to accomplish this goal by increasing its use of semi-custom designs (design 
families) and through improved development of object library creation 
techniques. 

   In the future, the Company may occasionally agree to work with a customer 
to produce a retail, shrink-wrapped product. In such cases, it is expected 
the customer would pay the entire cost of development and the Company would 
receive an ongoing royalty on all retail sales. The Company believes that 
only in such cases would its products be brought to market through a retail 
channel. 

   The Company intends to build management depth and breadth and expand the 
Company's marketing and sales capabilities. The Company intends to hire a 
chief executive officer and chief financial officer. The Company also intends 
to hire a senior marketing and sales executive to further develop the product 
strategy and implement and expand the Company's distribution strategy. The 
Company plans to establish a small direct sales force to focus on key 
products and markets and to solicit custom business. The Company intends to 
utilize a substantial portion of the net proceeds of this Offering for 
implementing this growth strategy. See "Risk Factors--Limited Marketing 
Experience; Need for Additional Personnel," "--Risks Associated with Growth 
Strategy" and "Use of Proceeds." 

Products 

   The Company's products are fully-graphical, interactive and provide 
constant graphical feedback with a wide variety of responses to the user's 
actions. To date, the Company's technology has been used to develop a variety 
of such products. 

   SimRefinery is a demonstration program which was released by the Division 
in late 1992 and purchased by the Company along with certain assets of the 
Division. SimRefinery serves as the Company's model demonstration program. 
The program shows how supply and demand conditions interact, the impact on 
the financial performance of the refinery of changes in supply and demand 
conditions and of changes in marketplace objectives. The user learns about 
refineries through taking an active role in the simulation as the plant 
manager of the refinery. 

   SimHealth is a simulation of the impact of various proposed reforms on the 
United States health care system and has some 5,000 objects. It simulates 
both the supply and demand sides of health care, shows the 

                                      26 
<PAGE> 

impact of choices and values on the financial health of the system and of its 
usage and demand. The program was developed for the Markle Foundation in 1994 
under a contract negotiated by the Division, and assumed and completed by the 
Company. 

   TeleSim is a simulation of the local exchange telephone market for a 
particular region and competitors in that region. The package simulates the 
world of a telephone company, including the particular user's sales and 
service regions and its market opportunities and vulnerabilities. The user 
can actively explore the impact on the financial performance of the 
corporation and the impact on its competitive environment of changes in the 
conditions of supply and demand or emphasis of different corporate 
objectives. Competing companies are driven by adaptive agents that base their 
strategies in part on the actions taken by the user. TeleSim has some 12,000 
objects. Since its initial development under a contract with Coopers in 1994, 
subsequent versions of TeleSim have been produced and sold through Coopers to 
Sprint Corp. and AT&T Corp. 

   Project Challenge, is a simulation for project management of information 
systems projects. Project Challenge users create a model of their projects, 
then operate the projects under benign, realistic or hostile environments. A 
variety of novel displays keep the user informed about project conditions, 
including scheduling, budget and human resources. This simulation program can 
assist in both training and operational roles. Project Challenge is highly 
sophisticated, incorporating over 15,000 objects. The development of the 
simulation was funded by SystemHouse; however, the Company retained the 
rights to create variations of this specific simulation for other kinds of 
project management, such as construction projects, and is currently working 
on other business simulation projects. The Company anticipates that Project 
Challenge will also serve as a foundation for training or performance support 
applications in other occupational fields. 

Product Development 

   The Company believes that its programming technology, resources and 
experience will allow it to move beyond the current generation of simulation 
products. Several advanced capabilities developed and cultivated by the 
Company since its inception play a critical role in its product development 
work. 

   (bullet) The Company has developed a process for investigating, describing
            and modeling complex adaptive systems. Conceptual and detailed
            design steps in this process make it possible to translate an
            understanding of the complex adaptive system into specifications
            required by programmers to build the final product. The Company has
            developed and refined its ability to program adaptive agents to
            produce new behaviors at run time, while remaining within a range of
            realistic behavior.

   (bullet) The Company continues to introduce and apply newer, more powerful
            techniques for programming its agents, often incorporating methods
            based on biological processes.

   (bullet) The Company has succeeded in creating a class of "bad agents," known
            as Malion, to explore vulnerabilities in systems, networks or
            practices so that the user can then repair them.

   The following markets are ones in which the Company is either already 
pursuing, or plans to pursue, product applications. See "Risk 
Factors--Dependence on Emerging Market for Business Simulation Software" and 
"--Uncertainties Related to Development of Additional Products." 

   Business Management, Sales and Training. In these simulations, the Company 
intends to focus on markets that lend themselves specifically to the 
strengths of simulation, namely markets requiring simulations mirroring 
circumstances involving multiple central variables amongst which tradeoffs 
continually need to be made, with outcomes that are not always intuitively 
obvious. An example of a business process simulation is Project Challenge, 
which trains corporate employees in the art of project 

                                      27 
<PAGE> 

management. The Company has begun development of its second product in this 
category which will focus on the sales process and the interpersonal skills 
critical to the sales process. Products in the business process category 
generally will be designed to support easy field-modification by the training 
department or student, but will not require custom programming by the 
Company. 

   Contingency and Security. These proposed simulations will provide 
emergency response service providers with a means of training, rehearsing and 
planning their disaster recovery procedures. The Company believes that this 
field is particularly appropriate for simulation since all parts of an 
organization must be involved, the actual event being prepared for happens 
rarely, if at all, and the consequences of the event can be disastrous if not 
handled properly. The first proposed product will treat information 
technology recovery for corporations, but related products may be developed 
for other forms of emergency response. 

   Internet and Intranet Simulations as Marketing Tools. Simulations of a 
host's business would reside on its home page or intranet and combine the key 
properties of adaptive and interactive simulators with the accessibility of 
wide area networks. Because these proposed simulations will emulate games, 
the Company believes that internet users will view them as compelling and 
engaging ways to spend time. While protecting the individual consumers' 
identity, the site would track and provide to the host valuable marketing 
information relating to the way consumers learn, think and decide about the 
hosts' products, and depending on design perhaps, competitive products as 
well. In this way the host could collect valuable marketing information. 

   Adaptive Supply and Distribution. The Company has completed a proof of 
concept simulation in the area of self-ordering distribution that the Company 
believes could change the way companies think about and plan their supply, 
distribution, replenishment and logistics capabilities. The Company believes 
that a simulation of this type would be of substantial interest in corporate, 
military and other government circles. 

   Thought and Decision Processes. The Company is working on a simulation 
that ascribes motives, goals, thoughts and strategies to other people or 
groups in order to make sense of their past behavior and to anticipate their 
future behavior. The simulation provides users with a means of building and 
updating models of the thought and decision processes of other individuals or 
groups including, for example, the competition or other departments within an 
organization. The product is intended to create a picture of this dynamic and 
often very complex process that helps the user to explore what she knows or 
assumes about the process. This simulation will be used to clarify 
communication with others and to further understand the thought process under 
examination. The first application in development is in the area of complex 
strategic decision-making. Future commercial applications will be designed to 
help corporate customers as they collect, organize and apply this complex and 
subtle knowledge about their business decisions, or those of their 
competitors and customers. 

Customers 

   Historically, the Company has sold its products to a number of large 
companies, as well as governmental agencies, foundations, text book and 
traditional publishers and consulting firms. The following list identifies 
certain of the Company's customers: 

         Coopers & Lybrand L.L.P.          Systems Engineering Solutions, Inc. 
         SHL SystemHouse, Inc.             Xerox Corp. 
         Andersen Consulting L.L.P.        Harcourt General, Inc. 

   Some of the Company's customers have contracted for the Company's 
development of specific simulations in order to resell such simulations as a 
value added component of their consulting or other services. The following 
list identifies certain end-users who have purchased the Company's products 
directly from customers of the Company: 

                                      28 
<PAGE> 

         AT&T Corp.              Sprint Corp. 
         NYNEX Corporation       Pacific Telecom, Inc. 
         U.S. Army               U.S. Air Force 

   
   Sales to SES, SystemHouse and ORD for the six months ended June 30, 1996 
accounted for 33%, 32% and 18%, respectively, of the Company's sales for such 
period. Sales to Markle, ORD and SystemHouse in Fiscal 1995 accounted for 
27%, 14% and 13%, respectively, of the Company's sales for such period. Sales 
to Markle and Coopers in Fiscal 1994 accounted for 59% and 17%, respectively, 
of the Company's sales for such period. The Company does not believe that it 
is materially dependent upon sales to these customers. 
    

Marketing and Sales Strategy 

   To date, the Company has not devoted significant financial resources to 
marketing, and customers have come through word-of-mouth or following 
referrals from Maxis and others. The Company has also generated inquiries by 
presentations at industry and academic forums with high level corporate 
audiences. John Hiles, the founder of Thinking Tools, is a highly sought 
after speaker at such events. 

   The Company intends to distribute its product through existing channels of 
its strategic partners as well as by initiating direct sales to customers 
through its proposed sales force, and through distributors and value added 
resellers ("VARs"). The Company entered into a Vertical Market Software 
Development/ Licensing Agreement, dated October 12, 1994, with Coopers 
pursuant to which the Company receives a royalty from Coopers in exchange for 
the grant to Coopers of a worldwide, perpetual license to use and reproduce 
TeleSim subject to the following: (i) for a period equal to the greater of 
five years from Coopers' final acceptance of TeleSim or any period of one 
year of non-use by Coopers of TeleSim, the Company may not license or sell 
TeleSim worldwide without Coopers' written approval and (ii) the Company may 
use TeleSim in any product for use outside the telecommunications industry, 
and for any non-competitive product, including other products for the 
telecommunications industry, provided that the Company shall not use Coopers' 
confidential information or trademarks. The Company also entered into a 
Development Agreement, dated June 30, 1995, with SystemHouse, pursuant to 
which the Company receives a royalty from SystemHouse in exchange for the 
grant to SystemHouse of a worldwide, exclusive right to use, market, sell, 
distribute and license Project Challenge for systems integration. The Company 
is also in discussion with additional prospective VARs. As the Company moves 
into new specific product areas, it intends to seek strategic alliances in 
such areas. The Company plans to continue making presentations and 
appearances at academic forums and corporate-sponsored events. 

   Proceeds from this Offering will be used to implement the Company's 
marketing and sales efforts. The Company expects to hire a direct sales force 
following this Offering. A senior marketing and sales executive is expected 
to be hired to further develop the product strategy and implement and expand 
the Company's distribution strategy. See "Risk Factors--Limited Marketing 
Experience; Need for Additional Personnel" and "Use of Proceeds." 

Intellectual Property 

   The Company does not have any patents and has not filed patent 
applications on its products because patents are often insufficient to 
protect software. The Company regards the software that it owns or licenses 
as proprietary and relies primarily on a combination of trade secret laws, 
nondisclosure agreements and other protection methods to protect its rights 
to its products and proprietary rights. 

   It is the Company's policy that all employees and third-party developers 
sign nondisclosure agreements. This may not afford the Company sufficient 
protection for its know-how and its proprietary products, and other parties 
may develop similar know-how and products, duplicate the Company's know- how 
and products or develop patents that would materially and adversely affect 
the Company's business. See "Risk Factors--Uncertainties Regarding 
Intellectual Property." 

                                      29 
<PAGE> 

   The Company believes that its products and services do not infringe the 
rights of third parties. However, there can be no assurance that third 
parties may not assert infringement claims against the Company, with such 
claims resulting in the Company being required to enter into royalty 
arrangements, pay other damages or defend against litigation, any of which 
could materially and adversely affect the Company's business. 

The Core Technology Asset-WHITEBOARD 

   WHITEBOARD is a collection of technologies that allows the software 
developer to build a business simulation for any type of company or industry. 
WHITEBOARD incorporates in the simulations all major variables for situations 
defined by the programmer. The Company's simulation development process 
allows the programmer to change variables and to see the effect of any other 
combination of variables. WHITEBOARD is comprised of four main components: 

   (bullet) An object-oriented database engine to manage and access thousands of
            objects while a simulation is running.

   (bullet) A library of predefined business simulation objects and tools to
            enable the developer to edit these objects and to build customized
            objects.

   (bullet) An object integration component to allow users to import and use
            objects from other technical environments, including other Company
            simulations.

   (bullet) The technical capability to add multi-media effects and approaches.

   WHITEBOARD is a powerful tool for building simulations of complex adaptive 
systems critical for simulating business environments. WHITEBOARD was 
developed to provide programmers with a tool for easily building realistic 
business simulations with a capacity for adaptive behavior, realistic 
duplication of crisis or chaos situations and animation and graphical 
displays. While incorporating advanced object- oriented concepts, it also 
focuses on the graphics area and is designed for visual analysis. WHITEBOARD 
allows developers to add full multi-media effects including sound, graphics 
and digital video. This permits the designer to approach simulations in the 
most realistic way possible. WHITEBOARD runs on an IBM PC on Windows. It is 
written in the widely used language C and it runs with Novell software in a 
workgroup environment. It is unique in its ability to run in the PC 
environment. 

   The object-oriented database allows developers to build complex 
applications by importing existing objects from other of the Company's 
applications--both finished products and work-in-progress. The developer can 
also edit existing simulation objects or add new types of simulation objects 
to simulate new types of situations. In effect, the engine is a specialized 
tool for rapidly building business simulations. For example, a family of 
performance support or training applications for related occupations could be 
developed substantially faster than Project Challenge--the foundation upon 
which they could be based. 

   The Company plans to enhance WHITEBOARD to include tools that will allow 
the developer to build customized simulation objects based on library objects 
or other objects. The library of objects built into WHITEBOARD can be further 
extended so that generic situations and processes can be highly customized to 
the precise application required by the developer. 

   The WHITEBOARD technology has been validated through use in the 
development of the Company's products. Developers have been able to carry out 
design, simulation and testing that would have otherwise been inordinately 
time consuming and expensive, at a fraction of the cost and the time spent. 
Use of WHITEBOARD has reduced the time required for prototyping the 
simulation and testing the marketing and launch of a product to a few months. 
The ability of WHITEBOARD to contribute to reductions in cycle time and to 
model strategic choices provides a significant competitive factor to the 
Company. 

                                      30 
<PAGE> 

Competition 

   The market for business simulation software is highly competitive, subject 
to rapid technological change and emerging industry standards. The Company 
believes that the principal competitive factors in its markets are product 
performance, product maintenance, support and price. The software industry in 
general is highly competitive and most established companies in the business 
software field are substantially larger and have greater financial resources 
than the Company. See "Risk Factors--Technological Change; Risk of 
Obsolescence; Industry Standards" and "--Competition" 

   Presently, internal development of business simulations by companies 
seeking simulation capability represents the main source of competition to 
the Company's products and services. However, because it generally is not 
economical for a business to develop and continually upgrade such a product 
for its own needs alone, the Company believes that internal development 
produces a less cost effective solution to the developer's needs. 

   Internal developers are currently limited to using equation-based 
simulation tools for their simulation program development. Equation-based 
models will not duplicate the adaptive or chaotic behavior of systems 
available from the Company. No generally available sources of tools will help 
corporate technical staff to design models of complex adaptive systems 
competitive with those of the Company. Even with programming tools for 
agent-based simulations, design know-how like that refined and practiced at 
the Company would still be required to create rich and effective tools and 
are unlikely to be available in an in-house setting. 

   Authoring tools such as MacroMedia's Director and Asymmetrix' Toolbook can 
be used to develop parts of the user interface for simulations. Authoring 
tools are developing a rich suite of multimedia effects and are optimal for 
building interesting graphic user interfaces and interactive applications. 
However, these tools cannot match the extensive customized and specialized 
agent-based, adaptive simulation objects possessed by the Company. 

   The Company believes that the following companies constitute the principal 
participants in the business simulation software market at this time: 

   Aspen Technologies, Inc. ("Aspen") supplies computer-aided chemical 
engineering software products to the process manufacturing industries. 
Aspen's software allows chemical engineers to create mathematical models of 
manufacturing processes and to predict the performance of such procedures 
under varying equipment configurations and conditions. 

   GSE Systems, Inc. ("GSE") designs, develops and supplies high fidelity, 
real time simulation software, systems and services for the energy and 
manufacturing industries. GSE develops simulation products for nuclear power 
plants, fossil fuel plants, petroleum refineries, chemical processing plants 
and other industrial manufacturing plants. 

   Integrated Systems, Inc. provides software development tools in several 
industries. Its products help manufacturers develop and simulate dynamic 
systems. 

   IntelliCorp, Inc. ("IntelliCorp.") develops and markets computer software 
that helps in creating knowledge-based computer systems, solving difficult 
problems and distributing information. IntelliCorp.'s software is aimed at 
the mainstream business market. 

   Legacy Software, Inc. develops entertainment and education software 
products for homes and schools. 

   Meta-Software, Inc. develops, markets and supports simulation and library 
generation software products for use in integrated circuit design. 

   MPSI Systems, Inc. ("MPSI") develops and markets proprietary computer 
application software and related databases used by multi-outlet retailers. 
MPSI's product constructs a mathematical model of a retail market, allowing 
clients to simulate various market changes. 

                                      31 
<PAGE> 

   PRI Automation, Inc. manufactures factory automation systems used in the 
fabrication of integrated circuits by semi-conductor manufacturers. 

   Games developers may also choose to enter the business simulation software 
market in the future and become competitors of the Company. 

   The Company believes that its combination of computer game interfaces, 
agent-based programming and design of complex adaptive system models 
differentiates its products from those of its competitors. 

Government Regulation 

   The Company is subject to regulation under various federal and state laws 
regarding, among other things, occupational safety, environmental protection, 
hazardous substance control and product advertising and promotion. The 
Company believes that it has complied with these laws and regulations in all 
material respects and it has not been required to take any action to correct 
any material noncompliance. The Company does not currently anticipate that 
any material capital expenditures will be required in order to comply with 
federal, state and local laws or that compliance with such laws will have a 
material effect on the financial condition or competitive position of the 
Company. 

Personnel 

   As of October 1, 1996, the Company had a total of 15 full-time employees, 
including Mr. John Hiles, Mr. Bruce Skidmore, seven software engineers, two 
designers, two artists and two administrative personnel. None of the 
Company's employees is represented by a labor union and the Company has not 
experienced any work stoppages. The Company considers its relations with its 
employees to be good. 

   The market for qualified personnel, especially that for software engineers 
and programmers, is highly competitive. The Company believes that its future 
success will depend, in part, on its continued ability to hire, assimilate 
and retain qualified personnel including management, sales and marketing, 
executive and direct sales force personnel. See "Business--Marketing and 
Sales Strategy." 

Facilities 

   The Company's principal offices are located at One Lower Ragsdale Drive, 
1-250, Monterey, California 93940. The Company leases approximately 3,776 
square feet of office space at this location pursuant to a lease with KI 
Monterey Research, Inc. dated August 19, 1994. Annual lease payments are 
expected to be $104,716.14 in the year ended December 31, 1996. 

Legal Proceedings 

   The Company is not a party to any legal proceedings. 

                                      32 
<PAGE> 

                                  MANAGEMENT 

Officers, Directors, Key Employees and Consultants 

The executive officers, directors, key employees and consultants of the 
Company are as follows: 

            Name            Age                   Position 
    ---------------------  -----  ------------------------------------------ 
    Mr. John Hiles          50   Founder, President, Secretary, Director 
    Mr. Fred Knoll          41   Chairman of the Board, Director 
    Ms. Esther Dyson        45   Director 
    Mr. Frederick Gluck     61   Director 
    Dr. Ted Prince          49   Director 
    Mr. Fran Saldutti       48   Director 
    Mr. Bruce Skidmore      37   Vice President of Engineering 
    Mr. Greg Rossi          40   Architect, WHITEBOARD 
    Mr. Rick Rosenbaum      49   Senior Applications Engineer 
    Mr. Mort Meyerson       57   Advisory Committee Member 

John Hiles is the founder and has been President and Secretary of the Company 
and a member of its board of directors, since its inception. Mr. Hiles' 
career spans 24 years in the software industry. From 1992 to 1993, he served 
in various positions with Maxis Business Simulations, including that of 
General Manager. While with Maxis, Mr. Hiles directed the development of 
SimHealth and developed a means of transferring the key human interface 
properties of entertainment games to business and government simulations. 
From 1986 to 1992, Mr. Hiles was President and co-founder of Delta Logic, 
Inc. From 1984 to 1986, Mr. Hiles served as Senior Vice President of product 
development at Digital Research. From 1976 to 1983, Mr. Hiles was employed by 
Amdahl where he lead the development of software products. In 1984, Mr. Hiles 
was in charge of leading software development at Mead Data Central. Two of 
the many products that have been produced by organizations that he directed 
were GEM, one of the first graphical user interfaces for the PC, and UTS, 
Amdahl's highly successful mainframe-compatible UNIX operating system which 
foreshadowed the open systems movement by several years. Mr. Hiles holds an 
A.B. from the University of California at Santa Barbara and took several 
additional undergraduate and graduate courses in Computer Science at the 
University of California at Los Angeles and the University of California at 
Irvine. 

Fred Knoll has been Chairman of the Board and a member of the board of 
directors since September 1994. From 1987 to the present, Mr. Knoll has been 
the principal of Knoll Capital Management, L.P., a venture capital firm 
specializing in the information technology industry. From 1985 to 1987, Mr. 
Knoll was an investment manager for General American Investors, responsible 
for the technology portfolio, and served as the United States representative 
on investments in leveraged buy-outs and venture capital for Murray 
Johnstone, Ltd. of Glasgow, Scotland. From 1983 to 1985, Mr. Knoll served as 
manager of venture investments for Robert Fleming, Inc., a U.K. merchant bank 
in New York and was responsible for managing a venture capital fund as well 
as managing a team whose responsibility was to identify public investment 
opportunities. Mr. Knoll also held investment positions with the Capital 
Group (Capital Research/Capital Guardian) from 1982 to 1983 and General 
American Investors. During the 1970's, Mr. Knoll worked in sales and 
marketing management for Data General and Wang Laboratories, Inc. Mr. Knoll 
is a director of numerous companies including Spradling Holdings, a plastics 
distributor, US Envirosystems a co-generation energy company, and Lamar 
Signal Processing, Ltd., a digital processing company, and is a principal of 
Valor Capital Management, L.P., a private investment limited partnership. Mr. 
Knoll holds a B.S. in Computer Science from M.I.T. and an M.B.A. from 
Columbia University in Finance and International Business. 

Esther Dyson has been a member of the board of directors since October 1994. 
Since 1983, Ms. Dyson has served as president of EDventure Holdings, a 
diversified company focusing on emerging information 

                                      33 
<PAGE> 

technology worldwide, and on the emerging computer markets of Central and 
Eastern Europe. Since 1994, Ms. Dyson has been chairman of the Electronic 
Frontier Foundation and has been a member of the US Nation Information 
Infrastructure Advisory Council, where she co-chairs the Information Privacy 
and Intellectual Property Subcommittee. Ms. Dyson is a member of the board of 
directors of the Global Business Network, ComputerLand Poland and Cygnus 
Support, and she is a member of the advisory board of Perot Systems. She is a 
limited partner in the Maryland Software Fund. Ms. Dyson has also written 
articles on industry topics for the Harvard Business Review, The New York 
Times, The New York Times Magazine, WIRED Magazine and Forbes Magazine, among 
others. 

Frederick W. Gluck has been a member of the board of directors since October 
1994. Mr. Gluck has also served as vice-chairman and a director of Bechtel 
Group, Inc. since 1995 and as a member of the Board of Directors of Bechtel 
Enterprises, Inc. He also serves as a member of both companies' executive 
committees. Prior to joining Bechtel, Mr. Gluck spent more than 25 years with 
McKinsey & Company, and was ultimately the managing director of the Company. 
Mr. Gluck serves on the Harvard Business School board of directors of the 
Associates, the Management Education Council of the Wharton School, the U.S./ 
Hong Kong Economic Cooperation Committee, the Council on Foreign Relations 
and the Board of the International Executive Service Corps. 

Ted Prince has been a member of the board of directors since October 1994. 
Since 1995, Dr. Prince has been the Chairman and CEO of INSCI Corporation. 
Since 1992, Dr. Prince has been the President and founder of Perth Ventures, 
Inc., an investment banking and public relations firm which specializes in 
the emerging information technology area. Dr. Prince is also an author, 
publisher and speaker in the area of emerging information technologies and 
market trends. He is the author and publisher of The Technology 
Fundamentalist, a national newsletter focusing on emerging computer 
technologies and market trends. Dr. Prince has started up several information 
technology companies including CP International, a company specializing in 
text retrieval software, and Harwell Computer Power, a startup in the same 
field. From 1984 to 1992, he served as President and CEO of several 
companies, including the national computer services company, Computer Power 
Group. From 1979 to 1984, Dr. Prince was the Chief Information Officer of the 
Australian Social Security Agency where he was responsible for designing the 
new national social welfare system. 

Fran Saldutti has been a member of the board of directors since October 1994. 
Mr. Saldutti has been, since 1995, a managing general partner of Ardent 
Research Partners, L.P., a limited partnership founded in 1992 to invest 
exclusively in the information technology markets. From 1990 through February 
1995, Mr. Saldutti served as senior technology analyst for Amerindo 
Investment Advisers. From 1984 through 1986 he served as Senior Vice 
President and Director of Research for Gartner Securities and from 1986 to 
1988 as Director of Technology Research for L.F. Rothschild. Mr. Saldutti 
moved to the buy side in 1989 as senior technology analyst with Merrill Lynch 
Asset Management's Sci/Tech Fund. From 1975 to 1989 Mr. Saldutti either 
produced, sold or directed technology research for several leading technology 
brokerage firms. Mr. Saldutti maintains board directorships in other 
technology companies, including Kraft Kennedy, Lesser, a LAN industry systems 
integrator and Meta Group, a market research firm specializing in information 
technology. He is a member of the Software and Services Splinter Group of the 
New York Society of Securities Analysts. 

Bruce Skidmore has been Vice President of Engineering of the Company since 
1993. Mr. Skidmore has 14 years of experience in the software development 
industry as, among other things, a Project Manager, Engineering Manager and 
Director of Engineering. His technical experience is in the areas of 
operating system development and design, networks and application 
architectures. From 1992 to 1993 he worked for Maxis as Director of Product 
Development. From 1986 through 1992, he worked for Poquet and Delta Logic as 
Manager of Communications and Systems Software. From 1981 to 1986, he worked 
for Digital Research as a Network Project Manager. Mr. Skidmore holds a B.S. 
in Computer Science from California Polytechnic State University, San Luis 
Obispo. 

                                      34 
<PAGE> 

Greg Rossi is the architect of WHITEBOARD and has been employed by the 
Company as a programmer since 1994. Mr. Rossi has 12 years of experience in 
the software industry focusing on object data bases and graphic user 
interfaces. From 1992 to 1993 he worked for Maxis as Senior Member of the 
Technical Staff. From 1986 to 1992 he worked for Poquet and Delta Logic as 
principal programmer. From 1985 to 1988 he worked for Digital Research as a 
senior software engineer and from 1982 to 1984 for Dialogic Systems as 
programmer. Mr. Rossi has a B.A. in Chemistry and Computer Science from the 
University of California at Santa Cruz. 

Rick Rosenbaum has served as the Company's Senior Applications Engineer since 
its inception. Mr. Rosenbaum has 25 years of experience in the software 
industry specializing in computer languages and simulation applications. 
Prior to working at the Company, from 1992 to 1993, he served as Senior 
Member of the Technical Staff of Maxis and, in 1986, as Manager of the Core 
Languages Group of Sun Microsystems, and from 1987 to 1992 as Project Manager 
of Digital Research and Bank of America. Mr. Rosenbaum holds a B.S. in 
Electrical Engineering and an M.S. in computer science from the Georgia 
Institute of Technology. 

The Company has agreed for the five-year period commencing upon consummation 
of this Offering, to nominate and use its best efforts (including the 
solicitation of proxies) to elect one designee of the Underwriter to the 
board of directors of the Company. No designee has been chosen as of the date 
hereof. See "Underwriting." 

Advisory Committee 

The board of directors of the Company has formed an advisory committee to 
provide it with industry and technology advice. The advisory committee 
currently consists of one member. 

Mort Meyerson has been Chairman and CEO of Perot Systems since 1992. From 
1979 to 1986 he was President and Chief Executive Officer of EDS Information 
Systems. Mr. Meyerson has had extensive experience in the software industry, 
in running large technology companies and in investing in, growing and 
capitalizing emerging technology companies. 

Arrangements with Directors and Executive Officers 

   John Hiles, President of the Company, is employed by the Company under an 
employment agreement (the "Employment Agreement") that is subject to 
automatic annual renewals unless terminated by the Company or Mr. Hiles upon 
90 days' prior written notice. Pursuant to the Employment Agreement, Mr. 
Hiles receives a salary of $132,000 per year, which salary may be increased 
at the discretion of the board of directors, and may be supplemented by 
certain bonuses at the discretion of the board of directors of the Company. 
The Company believes the terms of the arrangement are no less favorable to 
the Company than the terms that it could have obtained from an unaffiliated 
third party. 

   Fred Knoll, the Chairman of the Board of the Company, has provided, and 
continues to provide certain executive and related consulting services to the 
Company as requested by the Company including serving as Chairman of the 
Board, consulting on various aspects of the Company's business and 
negotiating certain contractual and employment arrangements. To date, Mr. 
Knoll has not been compensated for such services, however, Mr. Knoll may, in 
the future, be compensated for such services at the discretion of the board 
of directors in an amount which is not anticipated to be in excess of 
$150,000 per annum. Mr. Knoll is also entitled to reimbursement of any 
expenses which he incurs in connection with providing services to the 
Company. To date, Mr. Knoll has incurred unreimbursed expenses of 
approximately $70,000, which expenses are expected to be reimbursed from the 
proceeds of this Offering. Mr. Knoll, through certain affiliates, controls 
Thinking Technologies, L.P. 

   All directors are elected for a term of one year and hold office until the 
earlier of their resignation, removal from office or the next annual meeting 
of stockholders and until their successors have been elected and qualified. 

                                      35 
<PAGE> 

Executive Compensation 

   The following table sets forth the annual and long-term compensation for 
services in all capacities to the Company for the fiscal years ended December 
31, 1995 and 1994, of Mr. Hiles, the President of the Company. Mr. Hiles (the 
"Named Executive Officer") was the only executive officer of the Company who 
received over $100,000 in compensation in the form of salary and bonus for 
the fiscal years ended December 31, 1995 and 1994. 

                          Summary Compensation Table 

<TABLE>
<CAPTION>
                                                                                Long Term Compensation 
                                                                            --------------------------------- 
                                              Annual Compensation                 Awards           Payouts 
                                       ----------------------------------- 
                                                                                                    Long- 
                                                                                                     Term 
                                                                Other       Restricted            Incentive 
                                                               Annual         Stock     Options      Plan       All Other 
 Name and Principal Position    Year     Salary    Bonus    Compensation     Award(s)     SARs      Payout     Compensation 
 ----------------------------- ------ -----------  ----------------------  ------------ -------- -----------  --------------- 
<S>                             <C>     <C>          <C>         <C>            <C>        <C>        <C>           <C>
John Hiles,                     1995    $132,000     --          --             --         --         --            -- 
 President                      1994    $132,000     --          --             --         --         --            -- 
</TABLE>

1996 Stock Option Plan 

   The Thinking Tools, Inc. 1996 Stock Option Plan (the "Plan") was adopted by
the board of directors and approved by the Company's stockholders in August
1996.

   The purpose of the Plan is to attract and retain key personnel. The Plan
provides for the grant of options to acquire a maximum of 376,000 shares of
Common Stock of which options to purchase 145,036 shares have been granted under
the Plan, including (i) options to purchase 41,036 shares of Common Stock
granted to certain members of the Company's board of directors under the Plan,
at an exercise price of $1.00 per share, (ii) options to purchase 52,000 shares
of Common Stock granted to certain of the Company's employees at an exercise
price of $.79 per share and (iii) options to purchase 52,000 shares of Common
Stock granted to certain of the Company's employees at an exercise price of
$5.00 per share. The Plan permits the granting of incentive stock options
("ISOs") or non-qualified stock options ("NSOs") at the discretion of the
administrator of the Plan (the "Plan Administrator"). The board of directors
acts as the Plan Administrator. Subject to the terms of the Plan, the Plan
Administrator determines the terms and conditions of options granted under the
Plan. Options granted under the Plan are evidenced by written agreements which
contain such terms, conditions, limitations and restrictions as the Plan
Administrator deems advisable and which are not inconsistent with the Plan. ISOs
may be granted to individuals who, at the time of grant, are employees of the
Company or its affiliates. NSOs may be granted to directors, employees,
consultants and other agents of the Company or its affiliates. The Plan provides
that the Plan Administrator must establish an exercise price for ISOs that is
not less than the fair market value per share of the Common Stock at the date of
grant. Each ISO must expire within ten years of the date of grant. However, if
ISOs are granted to a person owning more than 10% of the voting stock of the
Company, the Plan provides that the exercise price may not be less than 110% of
the fair market value per share at the date of grant and that the term of such
ISOs may not exceed five years. The Plan Administrator has the authority to
establish vesting periods for options granted under the Plan, or to grant
options which are fully vested at the time.

   An optionee whose relationship with the Company or any related corporation
ceases for any reason (other than termination for cause, death or total
disability, as such terms are defined in the Plan) may exercise options in the
three-month period following such cessation (unless such options terminate or
expire sooner by their terms), or in such longer period determined by the Plan
Administrator in the case of NSOs. Unexercised options granted under the Plan
terminate upon a merger (other than a stock merger),

                                      36 
<PAGE> 

reorganization or liquidation of the Company; however, immediately prior to
such a transaction, optionees may exercise such options without regard to
whether the vesting requirements have been satisfied.

   Options granted under the Plan convert into options to purchase shares of
another corporation involved in a stock merger with the Company, unless the
Company and such other corporation, in their sole discretion, determine that
such options terminate. Such converted options become fully vested without
regard to whether the vesting requirements in the option agreement for such
options have been satisfied, unless the board of directors determines otherwise.

   The option exercise price may be paid in full at the time the notice of
exercise of the option is delivered to the Company and must be paid in cash, by
bank certified or cashier's check or by personal check. Options are
nontransferable with certain exceptions. The board of directors has certain
rights to suspend, amend or terminate the Plan provided stockholder approval is
obtained.

Options Granted Outside the Plan 

   In addition to the ISOs and NSOs which may be granted under the Plan, as 
at June 30, 1996 the Company has granted options to purchase an aggregate of 
(i) 58,964 shares of Common Stock outside of the Plan at an exercise price of 
$.79 per share, to certain of its directors in connection with the directors 
joining the Company's board of directors and (ii) 15,000 shares of Common 
Stock outside of the Plan at an exercise price of $1.00 per share, to a 
non-affiliate of the Company. 

                                      37 
<PAGE> 

                            PRINCIPAL STOCKHOLDERS 

   The following table sets forth certain information known to the Company 
regarding the beneficial ownership of the Company's voting securities as of 
the date of this Prospectus, and as adjusted to reflect the sale of shares 
offered hereby by (i) each person who is known by the Company to own of 
record or beneficially more than 5% of the outstanding Common Stock, (ii) 
each of the Company's directors and the Named Executive Officer, and (iii) 
all directors and executive officers of the Company as a group. Except as 
otherwise indicated, the stockholders listed in the table have sole voting 
and investment powers with respect to the shares indicated. 

<TABLE>
<CAPTION>
                                                                   Percentage of Class(1) 
                                                               -------------------------------- 
            Name and Address               Number of Shares 
           of Beneficial Owner            Beneficially Owned  Before Offering   After Offering 
- ----------------------------------------  ------------------- ----------------  --------------- 
<S>                                            <C>                 <C>               <C>
Thinking Technologies, L.P.(2)                 2,579,573            70.6%            51.0% 
Mr. Fred Knoll(2)(3)                           2,579,573            70.6%            51.0% 
Mr. John Hiles(4)                              1,076,677            35.5%            24.3% 
Ms. Esther Dyson(5)(6)                            25,000             *                * 
Mr. Frederick Gluck(6)(7)                         25,000             *                * 
Dr. Ted Prince(6)(8)                              25,000             *                * 
Mr. Fran Saldutti(6)(9)                           25,000             *                * 
All directors and executive officers 
as a group (6 persons)(2)(3)(4)(5)(6)          3,756,250           100.0%            72.8% 
</TABLE>

* Less than one percent. 

(1) Percentage of ownership before this Offering is based on 3,031,758 shares 
    of Common Stock outstanding as of the date of this Prospectus. For each 
    beneficial owner, shares of Common Stock subject to convertible 
    securities exercisable within 60 days of the date of this Prospectus are 
    deemed outstanding for computing the percentage of such beneficial owner. 

(2) Includes 468,242 shares of Common Stock issuable upon exercise of the 
    Technologies Warrants and 156,250 shares of Common Stock issuable upon 
    exercise of Bridge Warrants issued as part of the Bridge Units purchased 
    by Technologies. Does not include 75,454 shares of Common Stock which may 
    be purchased by Technologies from John Hiles upon the exercise of an 
    outstanding option, for $5.00 per share. See "Certain Transactions" and 
    "Description of Securities." The address of Thinking Technologies, L.P. 
    is 200 Park Avenue, Suite 3900, New York, New York 10166. 

(3) Includes shares beneficially owned by Thinking Technologies, L.P., a 
    limited partnership indirectly controlled by Mr. Knoll. The address of 
    Mr. Knoll is c/o Knoll Capital Management, 200 Park Avenue, Suite 3900, 
    New York, NY 10166. 

(4) Includes 75,454 shares of Common Stock which may be purchased by 
    Technologies from John Hiles upon the exercise of an outstanding option 
    for $5.00 per share. The address of Mr. Hiles is c/o Thinking Tools, 
    Inc., One Lower Ragsdale Drive, I-250, Monterey, California 93940. 

(5) The address of Ms. Dyson is c/o EDventure Holdings, Inc., 104 Fifth 
    Avenue, 20th Floor, New York, NY 10011-6987. 

(6) Includes an aggregate of 25,000 shares of Common Stock issuable to each 
    non-affiliated director of the Company upon exercise of outstanding 
    options. See "Management--1996 Stock Option Plan" and "--Options Granted 
    Outside the Plan." 

(7) The address of Mr. Gluck is c/o Bechtel, Inc., 50 Beal Street, San 
    Francisco, CA 94105. 

(8) The address of Dr. Prince is c/o Perth Ventures, 342 Madison Avenue, 
    #716, New York, NY 10173. 

(9) The address of Mr. Saldutti is c/o Ardert Research Partners, 200 Park 
    Avenue, 39th floor, New York, NY 10166. 

                                      38 
<PAGE> 

                             CERTAIN TRANSACTIONS 

   In connection with its purchase of certain assets from Maxis, and in order 
to fund its continuing operations, the Company entered into a stock purchase 
and loan agreement, dated September 28, 1994 by and between Technologies and 
the Company (the "Technologies Agreement"). Technologies was formed by Knoll 
Capital Management, L.P. in order to purchase Common Stock of the Company and 
to advance the funds provided for under the Technologies Agreement. The 
general partner of Technologies is Knoll Capital Management, L.P., an 
affiliate of Mr. Fred Knoll, the Company's Chairman of the Board. Mr. Mort 
Meyerson, a member of the advisory committee of the Company, is a limited 
partner in Technologies. 

   Pursuant to the Technologies Agreement, Technologies purchased 61.11% of 
the Company's authorized and issued Common Stock, for the purchase price of 
$100,000 and loaned to the Company $1,200,000 (the "Loan"). The Loan was 
evidenced by a promissory note (the "Technologies Note") due and payable on 
September 27, 1999. The Technologies Note provides for the semi-annual 
payment of interest at ten percent (10%) per annum beginning when and if the 
Company realized $2,000,000 in gross income during any fiscal year. No 
interest has been paid on the Loan. In connection with the Technologies 
Agreement, Mr. Hiles executed an irrevocable proxy authorizing Knoll Capital 
Management, L.P. to vote his shares of Common Stock, which proxy is effective 
until the Company (i) is acquired through a merger or acquisition; or (ii) 
effects an initial public offering in the aggregate amount of $2,500,000. On 
and before July 29, 1996, Technologies made additional loans to the Company 
in an aggregate principal amount of $502,000, with interest at a rate of 10% 
per annum, which loans were due and payable on December 31, 1996 (the 
"Additional Loan"), but were repaid in connection with the Bridge Financing. 
In connection with the Additional Loan, Technologies received warrants to 
purchase 468,242 shares of Company Common Stock at an exercise price of $1.07 
per share. See "Description of Securities--Technologies Warrants." 

   Pursuant to the Technologies Agreement, as long as Technologies owns 20% 
of the Company's Common Stock, the Company may not take certain actions 
without the approval of the Company's board of directors. Technologies has 
entered into a Consent, Waiver and Amendment dated as of August 28, 1996 (the 
"Consent & Waiver") with the Company in connection with the Bridge Financing 
providing that these covenants shall terminate upon consummation of this 
Offering. 

   In connection with the Technologies Agreement, the Company and Mr. Hiles 
agreed to certain co-sale rights and registration rights. Pursuant to the 
Consent and Waiver, these rights will terminate upon consummation of this 
Offering. 

   In addition, in connection with the Bridge Financing, pursuant to the 
Consent and Waiver, the following transactions were consummated: 

   Thinking Tools, Inc., a California corporation ("TTI"), was merged with 
and into its wholly-owned subsidiary Thinking Tools, Inc., a Delaware 
corporation. Pursuant to the Merger, each share of common stock of TTI 
outstanding prior to the Merger was exchanged for .7462 shares of Common 
Stock. 

   Pursuant to a plan of recapitalization adopted by the Company's board of 
directors, Technologies converted $1,200,000 aggregate principal amount of 
outstanding indebtedness and $120,310 of accrued interest into an aggregate 
of 263,158 shares of Common Stock issued to Technologies. 

   Technologies purchased $625,000 aggregate principal amount of Bridge Notes 
in the Bridge Financing immediately following repayment by the Company of 
$502,000 aggregate principal amount of outstanding indebtedness and $123,000 
of accrued interest due to Technologies from the proceeds of the Bridge 
Financing. 

   The Company has no present intention to acquire or merge with a business 
or company in which the Company's management or their affiliates or 
associates directly or indirectly have an ownership interest. All future 
transactions with officers, directors, affiliates and/or controlling 
stockholders of the Company will be on terms no less favorable than could be 
obtained from unaffiliated parties, and shall be approved by a majority of 
the directors of the Company, including a majority of the independent 
disinterested directors of the Company. 

                                      39 
<PAGE> 

                          DESCRIPTION OF SECURITIES 

   The following summary description of the Company's capital stock is 
qualified in its entirety by reference to the Company's Certificate of 
Incorporation. The following summary description of the securities of the 
Company is qualified in its entirety by reference to the Certificate of 
Incorporation, the Technologies Warrants, the Bridge Notes and the Bridge 
Warrants, forms of which have been filed as exhibits to the Registration 
Statement on Form SB-2 of which this Prospectus forms a part. 

Common Stock 

   The Company is authorized to issue up to 20,000,000 shares of Common 
Stock, par value $.001 per share, of which 3,031,758 shares are outstanding 
as of the date hereof. Holders of Common Stock are entitled to one vote for 
each share held of record on each matter submitted to a vote of stockholders. 
There is no cumulative voting for election of directors. Subject to the prior 
rights of any series of preferred stock which may from time to time be 
outstanding, holders of Common Stock are entitled to receive ratably, 
dividends when, as, and if declared by the board of directors out of funds 
legally available therefor and, upon the liquidation, dissolution, or winding 
up of the Company, are entitled to share ratably in all assets remaining 
after payment of liabilities and payment of accrued dividends and liquidation 
preferences on any preferred stock. See "Risk Factors--Lack of Dividends" and 
"Dividend Policy." Holders of Common Stock have no preemptive rights and have 
no rights to convert their Common Stock into any other securities. The 
outstanding Common Stock is validly authorized and issued, fully paid, and 
nonassessable. 

Preferred Stock 

   The Company is authorized to issue up to 3,000,000 shares of preferred 
stock, par value $.001 per share, of which no shares are outstanding as of 
the date hereof. The preferred stock may be issued in one or more series, the 
terms of which may be determined at the time of issuance by the board of 
directors, without further action by stockholders, and may include voting 
rights (including the right to vote as a series on particular matters), 
preferences as to dividends and liquidation, conversion rights, redemption 
rights, and sinking fund provisions. The issuance of any such preferred stock 
could adversely affect the rights of the holders of Common Stock and, 
therefore, reduce the value of the Common Stock. The ability of the board of 
directors to issue preferred stock could discourage, delay, or prevent a 
takeover of the Company. See "Risk Factors--Anti-Takeover Effects of Certain 
Provisions of Certificate of Incorporation and Delaware Law." 

Technologies Warrants 

   The Company currently has outstanding Technologies Warrants to purchase up 
to 468,242 shares of Common Stock at an exercise price of $1.07 per share at 
any time until December 31, 2006. The Technologies Warrants contain 
anti-dilution provisions providing for adjustment of the exercise price and 
the number of shares of Common Stock underlying the Technologies Warrants 
upon the occurrence of certain events, including stock dividends, stock 
splits and recapitalizations. Technologies has agreed that it will not sell 
the Technologies Warrants or the shares underlying the Technologies Warrants 
for a period of two years from the effective date of the Registration 
Statement, of which this Prospectus forms a part. The Technologies Warrants 
also entitle the holders to certain "piggyback" registration rights with 
respect to the shares issuable upon exercise thereof at any time that the 
Company files a registration statement other than one relating solely to the 
sale of securities to participants in a Company employee benefit plan, one 
not including substantially the same information as would be required to be 
included in a registration statement covering the sale of such Common Stock, 
or one only registering Common Stock issuable upon conversion of convertible 
debt securities which are also being registered. 

                                      40 
<PAGE> 

Bridge Units 

   The Bridge Units consist of the Bridge Notes and the Bridge Warrants. Each 
Bridge Unit consists of a Bridge Note issued by the Company in the principal 
amount of $100,000 and a Bridge Warrant to purchase up to 25,000 shares of 
Common Stock at an exercise price equal to the lesser of $4.20 per share or 
60% of the initial public offering price per share in this Offering. The 
Bridge Notes and the Bridge Warrants are separately transferable, subject to 
certain restrictions upon transferability. 

   Bridge Notes 

   The Bridge Notes bear interest at the rate of 10% per annum with interest 
to accrue from the date of issuance and payable in four quarterly 
installments on the first day of each December, March, June and September 
commencing on December 1, 1996 and at maturity. Principal of, and any accrued 
and unpaid interest on the Bridge Notes will be due and payable in full on 
the earlier of (i) the consummation of this Offering, (ii) one year from the 
date on which the Bridge Notes were issued, and (iii) the date of the closing 
of a sale (or the closing of the last of a series of sales) of securities by 
the Company or any subsidiary or affiliate thereof (other than the Bridge 
Notes and Bridge Warrants), the gross proceeds of which, in the aggregate, 
equal or exceed $1,825,000. The principal balance of the Bridge Notes, and 
accrued interest thereon, will be repaid with the net proceeds of this 
Offering. See "Use of Proceeds." 

   The Company has the right, at its option, to extend the maturity date of 
the Bridge Notes for up to one year. In the event that (A) the Company elects 
to extend such maturity date for six months, then the number of shares 
issuable upon the exercise of each Bridge Warrant shall automatically 
increase by an additional 5% for each month that the Bridge Notes continue to 
remain outstanding during such initial six-month period; and (B) the Company 
elects to extend the maturity date for an additional six months thereafter, 
then (i) the number of shares issuable upon the exercise of each Bridge 
Warrant shall automatically increase by an additional 10% for each month that 
the Bridge Notes continue to remain outstanding during such additional 
six-month period; and (ii) the Underwriter shall have the right to designate 
a number of directors constituting a majority of the board of directors until 
such time as the Bridge Notes and any accrued interest thereon are paid in 
full. 

   The Bridge Notes rank senior in right of payment to all Junior Debt of the 
Company, which is defined as all existing and future indebtedness other than 
(i) the indebtedness represented by the Bridge Notes; (ii) capital lease 
obligations; and (iii) certain other indebtedness which was repaid by the 
Company out of the proceeds of the Bridge Financing. See "Certain 
Transactions." The Bridge Notes are secured by a lien on certain assets of 
the Company. 

   Bridge Warrants 

   The Bridge Warrants entitle the holders thereof to purchase, in the 
aggregate, up to 456,250 shares of Common Stock at an exercise price equal to 
the lesser of $4.20 per share or 60% of the aggregate initial public offering 
price per share of Common Stock in this Offering, subject to adjustment. The 
Bridge Warrants may be exercised at any time after issuance and expire on 
August 28, 2001. The shares underlying the Bridge Warrants are being 
registered in this Offering, and shall be subject to a two-year lock-up with 
the Underwriter. The Underwriter has agreed that it will not consent to the 
release of any holders of the Bridge Warrants from such lock-up for a period 
of one year from the effective date of the Registration Statement, of which 
this Prospectus forms a part. In addition, the holders of the Bridge Warrants 
are entitled to certain "piggyback" registration rights with respect to such 
shares except in connection with the registration of securities issuable 
under an employee benefit plan or in connection with certain other 
registration statements filed by the Company. 

   The number of shares issuable upon exercise of the Bridge Warrants and the 
exercise price thereof may be adjusted in the event of the occurrence of 
certain events, including stock dividends, stock splits, 

                                      41 
<PAGE> 

combinations or reclassifications involving or in respect of the Common Stock 
of the Company, or an extension by the Company of the maturity date of the 
Bridge Notes. If the Company extends the maturity date of the Bridge Notes 
for a period of six months, the exercise price per share shall be decreased 
to the lesser of $3.50 per share or 50% of the initial public offering price 
per share. 

Stockholder Reports 

   The Company intends to furnish its stockholders with annual reports 
containing audited financial statements and such other periodic reports as 
the Company may deem appropriate or as may be required by law. 

Transfer Agent and Registrar 

   The Company has appointed Continental Stock Transfer & Trust Company as 
transfer agent for the Common Stock. 

Directors' Limitation of Liability and Indemnification 

   The Company's Certificate of Incorporation includes provisions which (a) 
eliminate the personal liability of directors for monetary damages resulting 
from breaches of their fiduciary duty (except for liability for breaches of 
the duty of loyalty, acts or omissions not in good faith or which involve 
intentional misconduct or a knowing violation of law, violations under 
Section 174 of the Delaware General Corporation Law ("DGCL"), or for any 
transaction from which the director derived an improper personal benefit) and 
(b) indemnify the directors and officers to the fullest extent permitted by 
the DGCL, including under circumstances under which indemnification is 
otherwise discretionary. The Company believes that these provisions are 
necessary to attract and retain qualified persons as directors and officers. 

   Section 145 of the Delaware General Corporation Law permits 
indemnification by a corporation of certain officers, directors, employees 
and agents. Consistent therewith, the Company's Certificate of incorporation 
requires that the Company indemnify all persons who it may indemnify pursuant 
thereto to the fullest extent permitted by Section 145. 

   The Company's Certificate of Incorporation and Bylaws provide that the 
Company will indemnify each of its directors and officers to the fullest 
extent permitted by law with respect to all liability and loss suffered and 
expenses incurred by such person in any action, suit or proceeding in which 
such person was or is made or threatened to be made a party or is otherwise 
involved by reason of the fact that such person is or was a director or 
officer of the Company. The Company is also obligated to pay the expenses of 
the directors and officers incurred in defending such proceedings, subject to 
reimbursement if it is subsequently determined that such person is not 
entitled to indemnification. 

   In addition, the Company's Certificate of Incorporation provides that the 
Company's directors shall not be liable to the Company or its stockholders 
for monetary damages for breaches of their fiduciary duties to the Company 
and its stockholders except to the extent such exemption from liability or 
limitation thereof is not permitted under the DGCL. This provision in the 
Certificate of Incorporation does not eliminate the duty of care, and in 
appropriate circumstances equitable remedies such as injunctive or other 
forms of non- monetary relief will remain available under the DGCL. In 
addition, each director will continue to be subject to liability for monetary 
damages for misappropriation of any corporate opportunity in violation of the 
director's duties, for acts or omissions involving intentional misconduct, 
for knowing violations of law, for actions leading to improper personal 
benefit to the director, and for distributions (including payment of 
dividends or stock repurchases or redemptions) that are unlawful under the 
DGCL. The provision does not affect a director's responsibilities under any 
other law, such as the federal securities laws. The Certificate of 
Incorporation further provides that if the DGCL is amended to authorize 
corporate action further eliminating or limiting the personal liability of 
directors then the liability of a director of the Company shall be eliminated 
or limited to the fullest extent permitted by the DGCL as amended or 
supplemented. 

                                      42 
<PAGE> 

   The Company maintains a policy of insurance under which the directors and 
officers of the Company will be insured, subject to the limits of the policy, 
against certain losses arising from claims made against such directors and 
officers by reason of any acts or omissions covered under such policy in 
their respective capacities as directors or officers, including liabilities 
under the Securities Act. Insofar as indemnification for liabilities arising 
under the Securities Act may be permitted to directors, officers and 
controlling persons of the Company pursuant to the foregoing provisions, or 
otherwise, the Company has been advised that, in the opinion of the 
Commission, such indemnification is against public policy as expressed in the 
Securities Act and is, therefore, unenforceable. 

Delaware Anti-Takeover Law 

   The Company is subject to Section 203 of the DGCL ("Section 203") which, 
subject to certain exceptions and limitations, prohibits a Delaware 
corporation from engaging in any "business combination" with any "interested 
stockholder" for a period of three years following the date that such 
stockholder became an interested stockholder, unless: (i) prior to such date, 
the board of directors of the corporation approved either the business 
combination or the transaction which resulted in the stockholder becoming an 
interested stockholder; (ii) upon consummation of the transaction which 
resulted in the stockholder becoming an interested stockholder, the 
interested stockholder owned at least 85% of the voting stock of the 
corporation outstanding at the time the transaction commenced (for the 
purposes of determining the number of shares outstanding at the time the 
transaction commenced (for the purposes of determining the number of shares 
outstanding under the DGCL, those shares owned (x) by persons who are 
directors and also officers and (y) by employee stock plans in which employee 
participants do not have the right to determine confidentially whether shares 
held subject to the plan will be tendered in a tender or exchange offer are 
excluded from the calculation); or (iii) on or subsequent to such date, the 
business combination is approved by the board of directors and authorized at 
an annual or special meeting of stockholders, and not by written consent, by 
the affirmative vote of at least 66-2/3% of the outstanding voting stock 
which is not owned by the interested stockholder. 

   For purposes of Section 203, "a business combination" includes (i) any 
merger or consolidation involving the corporation and the interested 
stockholder; (ii) any sale, transfer, pledge or other disposition of 10% or 
more of the assets of the corporation involving the interested stockholder; 
(iii) subject to certain exceptions, any transaction which results in the 
issuance or transfer by the corporation of any stock of the corporation to 
the interested stockholder; (iv) any transaction involving the corporation 
which has the effect of increasing the proportionate share of the stock of 
any class or series of the corporation beneficially owned by the interested 
stockholder; or (v) the receipt by the interested stockholder of the benefit 
of any loans, advances, guarantees, pledges or other financial benefits 
provided by or through the corporation. Section 203 defines an "interested 
stockholder" as any entity or person beneficially owning 15% or more of the 
outstanding voting stock of the corporation and any entity or person 
affiliated with or controlling or controlled by such entity or person. 

                       SHARES ELIGIBLE FOR FUTURE SALE 

   Upon completion of this Offering, the Company will have 4,431,758 shares 
of Common Stock outstanding (4,641,758 shares of Common Stock outstanding if 
the Over-Allotment Option is exercised in full). Of these shares, the 
1,400,000 Shares offered hereby (1,610,000 shares if the Over-Allotment 
Option is exercised in full) will be freely tradeable without further 
registration under the Securities Act. With respect to the remainder of such 
shares, all officers and directors of the Company and current stockholders 
have agreed not to publicly sell, or otherwise dispose of any securities of 
the Company for a period of 12 months from the date of this Prospectus 
without the Underwriter's prior written consent except (i) shares issued 
pursuant to the Over-Allotment Option, (ii) the Underwriter's Options and the 
Common Stock underlying such options, (iii) the issuance of Common Stock 
underlying warrants and options outstanding 

                                      43 
<PAGE> 

prior to this Offering, (iv) the issuance of shares of Common Stock 
underlying the Bridge Warrants, (v) the issuance of shares of Common Stock or 
options to purchase shares of Common Stock under the Plan and the issuance of 
shares of Common Stock upon exercise of such options, and (vi) the issuance 
of any securities in connection with any acquisition which is approved by a 
majority of the independent directors of the Company. Notwithstanding the 
foregoing, up to 30% of the shares of Common Stock of each stockholder may be 
sold by such stockholders at any time commencing six months from the date of 
this Prospectus without the Underwriter's consent in the event that the last 
sales price for the Common Stock on its principal exchange has been at least 
200% of the initial public offering price for a period of 20 consecutive 
trading days ending within five days of the date of such sale, and such sale 
is completed at a price in excess of 200% of the initial public offering 
price. See "Underwriting." 

   All of the presently outstanding 3,031,758 shares of Common Stock are, and 
the 456,250 shares of Common Stock issuable upon exercise of the Bridge 
Warrants and the 468,242 shares issuable upon exercise of the Technologies 
Warrants will be, "restricted securities" within the meaning of Rule 144 and, 
if held for at least two years, would be eligible for sale in the public 
market in reliance upon, and in accordance with, the provisions of Rule 144 
following the expiration of such two-year period. In general, under Rule 144 
as currently in effect, a person or persons whose shares are aggregated, 
including a person who may be deemed to be an "affiliate" of the Company as 
that term is defined under the Securities Act, would be entitled to sell 
within any three-month period a number of shares beneficially owned for at 
least two years that does not exceed the greater of (i) 1% of the then 
outstanding shares of Common Stock, or (ii) the average weekly trading volume 
in the Common Stock during the four calendar weeks preceding such sale. Sales 
under Rule 144 are also subject to certain requirements as to the manner of 
sale, notice and the availability of current public information about the 
Company. However, a person who is not deemed to have been an affiliate of the 
Company during the 90 days preceding a sale by such person and who has 
beneficially owned shares of Common Stock for at least three years may sell 
such shares without regard to the volume, manner of sale, or notice 
requirements of Rule 144. Beginning 90 days after the date of this 
Prospectus, approximately 2,768,600 shares will be available for sale in 
reliance upon Rule 144. 

   Prior to this Offering, there has been no public market for the Company's 
securities. Following this Offering, the Company cannot predict the effect, 
if any, that sales of shares of Common Stock pursuant to Rule 144 or 
otherwise, or the availability of such shares for sale, will have on the 
market price prevailing from time to time. In addition, sales by the current 
stockholders of a substantial number of shares of Common Stock in the public 
market could materially adversely affect prevailing market prices for the 
Common Stock. The availability for sale of a substantial number of shares of 
Common Stock acquired through the exercise of the Underwriter's Options, the 
Warrants or any options under the Plan could also materially adversely affect 
prevailing market prices for the Common Stock. See "Risk Factors--Future 
Sales of Restricted Securities." 

   Up to 140,000 additional shares of Common Stock may be purchased by the 
Underwriter through the exercise of the Underwriter's Options during the 
period commencing on the date of the closing of this Offering and terminating 
on the fifth anniversary of such date. The Holders of the Underwriter's 
Options have certain demand and "piggyback" registration rights as to such 
options and the underlying shares of Common Stock. Such options and any and 
all shares of Common Stock purchased upon the exercise of the Underwriter's 
Options may be freely tradeable, provided that the Company satisfies certain 
securities registration and qualification requirements in accordance with the 
terms of the Underwriter's Options. See "Underwriting." 

   Up to 456,250 shares of Common Stock may be purchased by the holders of 
the Bridge Warrants. Such holders have certain "piggyback" registration 
rights as to such shares commencing two years after the date of this 
Offering. Such shares will be freely tradeable upon such registration. 

                                      44 
<PAGE> 

                                 UNDERWRITING 

   The Underwriter has agreed, subject to the terms and conditions of the 
Underwriting Agreement (the form of which has been filed as an exhibit to the 
Registration Statement), to purchase from the Company all of the Shares 
offered. The Underwriting Agreement provides that the obligations of the 
Underwriter are subject to certain conditions precedent and that the 
Underwriter shall be obligated to purchase all of the Shares if any are 
purchased by the Underwriter. 

   The Underwriter has advised the Company that the Underwriter proposes to 
offer the Shares offered hereby to the public at the offering price set forth 
on the cover page of this Prospectus and that the Underwriter may allow to 
certain dealers, who are members of the National Association of Securities 
Dealers (the "NASD"), concessions of not in excess of $       per Share, of 
which not in excess of $       may be reallowed to other dealers who are 
members of the NASD. After the commencement of this Offering, the public 
offering price, the concessions and the reallowance may be changed. 

   The Company has granted an option to the Underwriter, exercisable during 
the 45-day period after the effective date of this Prospectus, to purchase up 
to an aggregate of 210,000 additional Shares at the public offering price, 
less the underwriting discounts and commissions. The Underwriter may exercise 
such option only for the purpose of covering Over-Allotments made in 
connection with the sale of the Common Stock offered hereby. 

   The Company has agreed to indemnify the Underwriter against certain 
liabilities in connection with the Registration Statement, including 
liabilities under the Securities Act. Insofar as indemnification for 
liabilities arising under the Securities Act may be permitted to the 
Underwriter, the Underwriter has been advised that, in the opinion of the 
Commission such indemnification is against public policy as expressed in the 
Securities Act and is, therefore unenforceable. 

   The Company has agreed to pay the Underwriter a non-accountable expense 
allowance of 3% of the aggregate offering price of the Shares offered hereby 
(including any Shares purchased pursuant to the Over-Allotment Option), of 
which $35,000 has been paid to date. 

   
   The Company has also agreed to sell to the Underwriter, or its designees, 
Underwriter's Options to purchase 140,000 shares at a price of $.001 per 
option. The Underwriter's Options will be exercisable for a period of five 
years, commencing on the date of this Prospectus, at an initial per share 
exercise price equal to 160% of the initial public offering price per share. 
The Underwriter's Options cannot be transferred, assigned or hypothecated for 
one year from the date of their issuance, except that they may be assigned, 
in whole or in part, to any successor, officer or partner of the Underwriter 
or its partners or members of the underwriting group. The Underwriter's 
Options may be exercised as to all or a lesser number of shares and will 
contain certain registration rights and antidilution provisions providing for 
appropriate adjustment of the exercise price and number of shares which may 
be purchased upon exercise, upon the occurrence of certain events. See "Risk 
Factors--Effect of Previously Issued Options, Warrants and Underwriter's 
Options on Stock Price." 
    

   The Company has agreed that it will, on any two occasions, register the 
securities underlying the Underwriter's Options, the first time at the 
Company's expense. The Company has also agreed, during the seven year period 
commencing on the date of the closing of this Offering, to register on a 
"piggyback" basis, on an unlimited number of occasions, the securities 
underlying the Underwriter's Options whenever the Company files a 
registration statement. Notwithstanding these registration rights, the 
Company will not be required to register the securities underlying the 
Underwriter's Options if it delivers to the holders of the Underwriter's 
Options an opinion of counsel from counsel reasonably acceptable to such 
holders in form and substance reasonably acceptable to such holders that such 
securities are freely transferable without registration. 

                                      45 
<PAGE> 

   
   The Underwriter will provide financial advisory services with respect to 
possible future financings or acquisitions by the Company and related 
matters. The Company has also agreed to pay the Underwriter a fee with 
respect to any merger, acquisition, joint venture, sale of securities or 
other business transaction, with certain exceptions, to which the Company is 
a party during such two-year period. Such fee will be equal to a percentage 
of the consideration paid or received by the Company in connection with such 
transaction or, $250,000, at the election of the Company. 
    

   The Company has also agreed for the five-year period commencing upon 
consummation of this Offering, to nominate and use its best efforts 
(including the solicitation of proxies) to elect one designee of the 
Underwriter to the board of directors of the Company. No designee has been 
chosen as of the date hereof. 

   The foregoing discussion of the material terms and provisions of the 
Underwriting Agreement is qualified in its entirety by reference to the 
detailed provisions of the Underwriting Agreement, the form of which has been 
filed as an exhibit to the Registration Statement on Form SB-2, of which this 
Prospectus forms a part. 

   The Underwriter acted as placement agent in connection with the Bridge 
Financing. In connection therewith, the Underwriter received sales 
commissions of $182,500 in the aggregate, was reimbursed a total of $34,000 
for certain expenses (including attorneys' fees) and was issued a total of 
45,625 warrants which are identical to the Bridge Warrants (the "Placement 
Agent's Warrants"). The Underwriter has agreed to relinquish the Placement 
Agent's Warrants upon the consummation of this Offering. 

   The Company and its directors, officers and the holders of all of the 
Company's outstanding Common Stock have agreed with the Underwriter not to 
sell, contract to sell or otherwise dispose of any of the Company's 
securities held by them for a period of 12 months following the date of this 
Prospectus without the prior written consent of the Underwriter, except for 
certain exceptions and under certain circumstances. See "Shares Eligible For 
Future Sale." 

   Prior to this Offering, there has been no public market for the Common 
Stock. Consequently, the public Offering price of the Shares has been 
determined by arms-length negotiation between the Company and the Underwriter 
and does not necessarily bear any relationship to the Company's book value, 
assets, past operating results, financial condition, or other established 
criteria of value. Factors considered in determining such price included an 
assessment of the Company's recent financial results and current financial 
condition, future prospects of the Company, the qualifications of the 
Company's management, and other relevant factors. 

                                      46 
<PAGE> 

                                LEGAL MATTERS 

   The validity of the Common Stock offered hereby and certain other legal 
matters will be passed upon for the Company by Squadron, Ellenoff, Plesent & 
Sheinfeld, LLP, New York, New York. Certain legal matters in connection with 
the Offering will be passed upon for the Underwriter by Kramer, Levin, 
Naftalis & Frankel, New York, New York. Squadron, Ellenoff, Plesent & 
Sheinfeld, LLP, has, from time to time, rendered legal advisory services to 
the Underwriter. 

                                   EXPERTS 

   The financial statements of Thinking Tools, Inc. as of December 31, 1995 
and for each of the fiscal years ended December 31, 1994 and December 31, 
1995, have been included herein and in the Registration Statement of which 
this Prospectus forms a part in reliance on the report of KPMG Peat Marwick 
LLP, independent certified public accountants, appearing elsewhere herein, 
given on the authority of that firm as experts in accounting and auditing. 

                            AVAILABLE INFORMATION 

   The Company has filed with the Securities and Exchange Commission (the 
"Commission"), 450 Fifth Street, N.W., Washington D.C. 20549, a registration 
statement on Form SB-2 (the "Registration Statement") under the Securities 
Act with respect to the securities offered hereby. This Prospectus does not 
contain all of the information set forth in the Registration Statement and 
the exhibits thereto, as permitted by the rules and regulations of the 
Commission. For further information, reference is made to the Registration 
Statement and to the exhibits filed therewith. Statements contained in this 
Prospectus as to the contents of any contract or other document which has 
been filed as an exhibit to the Registration Statement are qualified in their 
entirety by reference to such exhibits for a complete statement of their 
terms and conditions. The Registration Statement and the exhibits thereto may 
be inspected without charge at the offices of the Commission and copies of 
all or any part thereof may be obtained from the Commission's Public 
Reference Section at 450 Fifth Street, N.W., Washington D.C. 20549 or at 
certain of the regional offices of the Commission located at 7 World Trade 
Center, 13th Floor, New York, New York 10048 and 500 West Madison Street, 
Suite 1400, Chicago, Illinois 60661, upon payment of the fees prescribed by 
the Commission. The Commission maintains a World Wide Web site on the 
Internet at http://www.sec.gov that contains reports, proxy and information 
statements and other information regarding registrants that file 
electronically with the Commission. In addition, following approval of the 
Common Stock for quotation on the NASDAQ, reports and other information 
concerning the Company may be inspected at the offices of the NASD, 1735 K 
Street, N.W., Washington D.C. 20006. 

                                      47 
<PAGE> 

                             THINKING TOOLS, INC. 
                        INDEX TO FINANCIAL STATEMENTS 

                                               Page 
                                            --------- 
Independent Auditors' Report                    F-2 
Balance Sheets                                  F-3 
Statements of Operations                        F-4 
Statements of Stockholders' Deficit             F-5 
Statements of Cash Flows                        F-6 
Notes to Financial Statements                   F-7 

                                      F-1 
<PAGE> 

                         INDEPENDENT AUDITORS' REPORT 

The Board of Directors and Stockholders 
Thinking Tools, Inc.: 

   We have audited the accompanying balance sheet of Thinking Tools, Inc. 
(the Company) as of December 31, 1995, and the related statements of 
operations, stockholders' deficit, and cash flows for each of the years in 
the two-year period ended December 31, 1995. These financial statements are 
the responsibility of the Company's management. Our responsibility is to 
express an opinion on these financial statements based on our audits. 

   We conducted our audits in accordance with generally accepted auditing 
standards. Those standards require that we plan and perform the audit to 
obtain reasonable assurance about whether the financial statements are free 
of material misstatement. An audit includes examining, on a test basis, 
evidence supporting the amounts and disclosures in the financial statements. 
An audit also includes assessing the accounting principles used and 
significant estimates made by management, as well as evaluating the overall 
financial statement presentation. We believe that our audits provide a 
reasonable basis for our opinion. 

   In our opinion, the financial statements referred to above present fairly, 
in all material respects, the financial position of Thinking Tools, Inc. as 
of December 31, 1995, and the results of its operations and its cash flows 
for each of the years in the two-year period ended December 31, 1995 in 
conformity with generally accepted accounting principles. 

   The accompanying financial statements have been prepared assuming that the 
Company will continue as a going concern. As discussed in Note 1 to the 
financial statements, the Company has suffered recurring losses from 
operations and has a net capital deficiency that raise substantial doubt 
about its ability to continue as a going concern. Management's plans in 
regard to these matters are described in Note 13. The financial statements do 
not include any adjustments that might result from the outcome of this 
uncertainty. 

                                                         KPMG Peat Marwick LLP 

San Jose, California 
August 16, 1996, except as to 
Note 13, which is as of 
August 28, 1996 

                                      F-2 
<PAGE> 

                             THINKING TOOLS, INC. 
                                BALANCE SHEETS 
                      (In thousands, except share data) 

<TABLE>
<CAPTION>
                                                                                June 30, 1996 
                                                                         -------------------------- 
                                                           December 31,                  Pro forma 
                                                               1995        Historical    (Note 13) 
                                                         --------------- -------------  ------------ 
                                                                                 (Unaudited) 
<S>                                                           <C>            <C>          <C>     
                         ASSETS 
                  (Principally Pledged) 
Current assets: 
 Cash                                                         $   152        $     7      $ 1,100 
 Accounts receivable                                              146            165          165 
 Costs in excess of billings on uncompleted contracts              11             24           24 
 Prepaid expenses and other current assets                         10             43           43 
                                                         --------------- -------------  ------------ 
   Total current assets                                           319            239        1,332 
Property and equipment, net                                       102            101          101 
Other assets                                                       11             10           10 
                                                         --------------- -------------  ------------ 
   Total assets                                               $   432        $   350      $ 1,443 
                                                         =============== =============  ============ 
          LIABILITIES AND STOCKHOLDERS' DEFICIT 
Current liabilities: 
 Accounts payable                                             $     5        $    47      $    47 
 Due to related party                                              34             42           42 
 Accrued expenses                                                 124            247          216 
 Billings in excess of costs on uncompleted contracts             210             71           71 
 Deferred revenue                                                  30             --           -- 
 Notes payable                                                    201            431           80 
 Current portion of capital lease obligations                      13             18           18 
 Bridge notes payable                                              --             --        1,275 
                                                         --------------- -------------  ------------ 
   Total current liabilities                                      617            856        1,749 
Long-term liabilities: 
 Note payable                                                   1,200          1,380           -- 
 Interest payable                                                 155             --           -- 
 Long-term portion of capital lease obligations                    18             19           19 
                                                         --------------- -------------  ------------ 
   Total liabilities                                            1,990          2,255        1,768 
                                                         --------------- -------------  ------------ 
Commitments and contingencies 
Stockholders' deficit: 
 Preferred stock, $.001 par value; 3,000,000 shares 
  authorized; no shares issued and outstanding                     --             --           -- 
 Common stock, $.001 par value; 20,000,000 shares 
  authorized; 2,768,600 shares issued and outstanding, 
  actual; 3,031,758 shares issued and outstanding, pro 
  forma                                                             3              3            3 
 Additional paid-in capital                                        89             89        2,510 
 Accumulated deficit                                           (1,650)        (1,997)      (2,838) 
                                                         --------------- -------------  ------------ 
   Total stockholders' deficit                                 (1,558)        (1,905)        (325) 
                                                         --------------- -------------  ------------ 
   Total liabilities and stockholders' deficit                $   432        $   350      $ 1,443 
                                                         =============== =============  ============ 
</TABLE>

               See accompanying notes to financial statements. 

                                      F-3 
<PAGE> 

                             THINKING TOOLS, INC. 
                           STATEMENTS OF OPERATIONS 
                    (In thousands, except per share data) 

<TABLE>
<CAPTION>
                                                 Years ended        Six months ended 
                                                 December 31,           June 30, 
                                             -------------------- --------------------- 
                                               1994       1995       1995       1996 
                                             ---------  ---------  --------- ---------- 
                                                                       (Unaudited) 
<S>                                           <C>        <C>        <C>        <C>    
Contract revenues                             $  846     $1,329     $  676     $  634 
Contract costs                                   736        708        374        354 
                                             ---------  ---------  --------- ---------- 
   Gross profit                                  110        621        302        280 
                                             ---------  ---------  --------- ---------- 
Operating expense: 
 Selling, general, and administrative            395        751        357        532 
 Research and development                        389        328        174         60 
                                             ---------  ---------  --------- ---------- 
                                                 784      1,079        531        592 
                                             ---------  ---------  --------- ---------- 
   Operating loss                               (674)      (458)      (229)      (312) 
                                             ---------  ---------  --------- ---------- 
Interest expense                                 (56)      (140)       (60)       (77) 
Other income, net                                 --         10         10         43 
                                             ---------  ---------  --------- ---------- 
   Total other expenses                          (56)      (130)       (50)       (34) 
                                             ---------  ---------  --------- ---------- 
   Loss before income taxes                     (730)      (588)      (279)      (346) 
Income tax expense                                 1          1          1          1 
                                             ---------  ---------  --------- ---------- 
   Net loss                                   $ (731)    $ (589)    $ (280)    $ (347) 
                                             =========  =========  ========= ========== 
Net loss per share                            $(0.23)    $(0.19)    $(0.09)    $(0.11) 
                                             =========  =========  ========= ========== 
Shares used in calculating per share data      3,141      3,141      3,141      3,141 
                                             =========  =========  ========= ========== 
</TABLE>

               See accompanying notes to financial statements. 

                                      F-4 
<PAGE> 

                             THINKING TOOLS, INC. 
                     STATEMENTS OF STOCKHOLDERS' DEFICIT 
                                (In thousands) 

<TABLE>
<CAPTION>
                                                 Common stock    Additional                        Total 
                                             ------------------    paid-In     Accumulated     stockholders' 
                                              Shares    Amount     capital       deficit          deficit
                                             --------  -------- ------------- --------------  ---------------- 
<S>                                           <C>        <C>         <C>         <C>              <C>      
Balances as of December 31, 1993                 --      $ -         $--         $  (330)         $  (330) 
Issuance of common stock                      2,769        3          89              --               92 
Net loss                                         --       --          --            (731)            (731) 
                                             --------  -------- ------------- --------------  ---------------- 
Balances as of December 31, 1994              2,769        3          89          (1,061)            (969) 
Net loss                                         --       --          --            (589)            (589) 
                                             --------  -------- ------------- --------------  ---------------- 
Balances as of December 31, 1995              2,769        3          89          (1,650)          (1,558) 
Net loss (unaudited)                             --       --          --            (347)            (347) 
                                             --------  -------- ------------- --------------  ---------------- 
Balances as of June 30, 1996 (unaudited)      2,769      $ 3         $89         $(1,997)         $(1,905) 
                                             ========  ======== ============= ==============  ================ 
</TABLE>

               See accompanying notes to financial statements. 

                                      F-5
<PAGE> 

                             THINKING TOOLS, INC. 
                           STATEMENTS OF CASH FLOWS 
                                (In thousands) 

<TABLE>
<CAPTION>
                                                             Years ended      Six months ended 
                                                             December 31,         June 30, 
                                                          ------------------  ------------------ 
                                                            1994     1995      1995      1996 
                                                          --------  --------  ----------------- 
                                                                                 (Unaudited) 
<S>                                                        <C>       <C>       <C>      <C>    
Cash flows from operating activities: 
   Net loss                                                $ (731)   $(589)    $(280)   $(347) 
  Adjustments to reconcile net loss to net cash used in 
  operating activities: Depreciation and amortization           9       20        10       13 
      Loss on disposal of assets                                4       --        --       -- 
      Changes in operating assets and liabilities: 
       Accounts receivable                                   (104)     (43)        5      (19) 
       Prepaid expenses and other current assets              (16)       7        (1)     (33) 
       Costs in excess of billings on  uncompleted 
       contracts                                               79       25        (3)     (13) 
       Other assets                                            (5)      --        --        1 
       Due to related party                                     1       34        18        8 
       Accounts payable                                        11       (6)       53       42 
       Accrued expenses                                        98      179        35      (32) 
       Billings in excess of costs on uncompleted 
       contracts and deferred revenue                         164       76      (124)    (169) 
                                                          --------  --------  ----------------- 
       Net cash used in operating activities                 (490)    (297)     (287)    (549) 
                                                          --------  --------  ----------------- 
       Cash flows from investing activities: 
  Purchase of equipment                                       (26)     (14)      (14)      -- 
  Organizational costs                                         (6)      --        --       -- 
                                                          --------  --------  ----------------- 
  Net cash used in investing activities                       (32)     (14)      (14)      -- 
                                                          --------  --------  ----------------- 
  Cash flows from financing activities: 
Proceeds from issuance of short-term notes payable             --      201        50      257 
  Principal payments on capital leases                         (2)      (6)       (1)      (6) 
  Proceeds from issuance of long-term debt                  1,200       --        --      180 
  Proceeds from issuance of common stock                       92       --        --       -- 
  Principal payment on short-term notes payable              (500)      --        --      (27) 
                                                          --------  --------  ----------------- 
  Net cash provided by financing activities                   790      195        49      404 
                                                          --------  --------  ----------------- 
Net increase (decrease) in cash                               268     (116)     (252)    (145) 
Cash at beginning of year                                      --      268       268      152 
                                                          --------  --------  ----------------- 
Cash at end of year                                        $  268    $ 152     $  16    $   7 
                                                          ========  ========  ================= 
Supplemental disclosures of cash flow information: Cash 
paid during the year: Income taxes                         $    1    $   1     $   1    $   1 
                                                          ========  ========  ================= 
      Interest                                             $   26    $  16     $   1    $ 196 
                                                          ========  ========  ================= 
      Noncash investing and financing activities: 
      Equipment acquired under capital leases              $   11    $  28     $  10    $  12 
                                                          ========  ========  ================= 
</TABLE>

               See accompanying notes to financial statements. 

                                      F-6 
<PAGE> 

                             THINKING TOOLS, INC. 
                        NOTES TO FINANCIAL STATEMENTS 
           (Information as of June 30, 1996 and for the six months 
                  ended June 30, 1995 and 1996 is unaudited) 

(1)  Summary of Significant Accounting Policies 

   Thinking Tools, Inc. (the Company) was incorporated in California in 
December 1993 to purchase certain assets of the business simulations 
division of Maxis, Inc. On December 30, 1993, the Company purchased 
intangible assets, a contract in process, and property and equipment from 
Maxis in exchange for a note payable of $500,000 which was repaid in 1994. 
The acquisition was accounted for using the purchase method. The purchase 
price was allocated to the assets acquired, based on relative fair values, as 
follows: 

Contracts in process                              $115,000 
Acquired in-process research and development       330,000 
Property, equipment, and other assets               55,000 
                                                 ----------- 
                                                  $500,000 
                                                 =========== 

   The Company develops agent-based, adaptive PC-based business simulation 
software that has a broad range of potential applications. A majority of the 
Company's outstanding common stock is held by Thinking Technologies, L.P. 

   In June 1996, the Board of Directors authorized a 4.1225-for-1 stock split 
for all outstanding shares of the Company's common stock. 

   In August 1996, the Company reincorporated in the state of Delaware by 
merging with and into a wholly-owned subsidiary which was incorporated in 
Delaware in August 1996, with authorized capital consisting of 20,000,000 
shares of $0.001 par value common stock and 3,000,000 shares of $0.001 par 
value preferred stock. Pursuant to such merger each outstanding share of the 
Company's common stock was exchanged for .7462 shares of common stock. 

   The accompanying financial statements and notes have been restated to give 
effect to the stock splits and reincorporation. 

   Basis of Presentation 

   The accompanying financial statements have been prepared assuming that the 
Company will continue as a going concern. The Company has suffered recurring 
losses from operations and has a net capital deficiency that raise 
substantial doubt about its ability to continue as a going concern. 
Management's plans in regard to these matters are described in Note 13. 

   Use of Estimates 

   The preparation of financial statements in conformity with generally 
accepted accounting principles requires management to make estimates and 
assumptions that affect the reported amounts of assets and liabilities and 
disclosure of contingent assets and liabilities at the date of the financial 
statements and reported amounts of revenues and expenses during the reporting 
period. Actual results could differ from those estimates. Significant 
estimates made by management include the stage of completion and the amount 
of costs yet to be incurred on contracts in process. 

   Revenue and Cost Recognition 

   Revenues from fixed-price contracts are recognized using the 
percentage-of-completion method, measured by input measures. Contract costs 
include primarily direct labor and other direct costs. Provisions for 
estimated losses on uncompleted contracts are made in the period in which 
such losses are determined. Changes in job performance, job conditions, and 
estimated profitability may result in revisions to costs and revenues and are 
recognized in the period in which the revisions are determined. Revenues from 
time and materials contracts are recognized as costs are incurred. 

                                      F-7 
<PAGE> 

                             THINKING TOOLS, INC. 
                  NOTES TO FINANCIAL STATEMENTS--(Continued) 
           (Information as of June 30, 1996 and for the six months 
                  ended June 30, 1995 and 1996 is unaudited) 

(1)  Summary of Significant Accounting Policies--(Continued) 

   Property and Equipment 

   Property and equipment are stated at cost less accumulated depreciation 
and amortization. Depreciation is provided using the straight-line method 
over the estimated useful lives of the assets. Leasehold improvements are 
amortized over the shorter of the estimated useful lives or the underlying 
lease term. 

   Research and Development 

   Research and development costs are charged to expense as incurred. The 
Company capitalizes software development costs incurred subsequent to the 
establishment of technological feasibility (generally the working model). 
Amounts capitalized to date, net of related valuation allowances, have not 
been material. 

   Net Loss Per Share 

   Net loss per share is computed based on the weighted average number of 
shares of common stock outstanding, dilutive common equivalent shares from 
stock options and warrants using the treasury stock method and convertible 
debt using the if-converted method. In accordance with certain Securities and 
Exchange Commission (SEC) Staff Accounting Bulletins, such computations 
include all common equivalent shares (using the treasury stock method) issued 
within one year of filing of the Company's initial public offering (IPO) as 
if they were outstanding for all periods presented using the anticipated IPO 
price. 

   Unaudited Interim Results 

   The accompanying unaudited financial statements as of June 30, 1996, and 
for the six months ended June 30, 1995 and 1996 have been prepared on 
substantially the same basis as the audited financial statements and, in the 
opinion of the Company's management, include all adjustments, consisting only 
of normal recurring adjustments, necessary for a fair presentation of the 
financial information set forth therein. 

   Recent Accounting Pronouncements 

   In October 1995, the Financial Accounting Standards Board issued Statement 
of Financial Accounting Standards (SFAS) No. 123, Accounting for Stock-Based 
Compensation. SFAS No. 123 will be effective for fiscal years beginning after 
December 15, 1995, and will require that the Company either recognize in its 
financial statements costs related to its employee stock-based compensation 
plans, such as stock option and stock purchase plans, or make pro forma 
disclosures of such costs in a footnote to the financial statements. 

   The Company expects to continue to use the intrinsic value method of 
Accounting Principles Board Opinion No. 25, as allowed under SFAS No. 123, to 
account for all of its employee stock-based compensation plans. Therefore, in 
its financial statements for fiscal 1996, the Company will make the required 
pro forma disclosures in a footnote. SFAS No. 123 is not expected to have a 
material effect on the Company's results of operations or financial position. 

                                      F-8 
<PAGE> 

                             THINKING TOOLS, INC. 
                  NOTES TO FINANCIAL STATEMENTS--(Continued) 
           (Information as of June 30, 1996 and for the six months 
                  ended June 30, 1995 and 1996 is unaudited) 

(2)  Accounts Receivable 

   A summary of accounts receivable follows (in thousands): 

                                   December 31,     June 30, 
                                       1995           1996 
                                  ---------------  ------------ 
                                                   (Unaudited) 
Completed contract billings            $ 28           $ 18 
Contracts in progress billings          118             92 
Other receivables                        --             55 
                                  ---------------  ------------ 
    Total                              $146           $165 
                                  ===============  ============ 

(3)  Property and Equipment 

   A summary of property and equipment follows (in thousands): 

                                                December 31,    June 30, 
                                                    1995          1996 
                                                -------------  ------------ 
                                                               (Unaudited) 
Leased equipment                                    $ 39          $ 51 
Equipment                                             79            79 
Furniture and fixtures                                 7             7 
Leasehold improvements                                 6             6 
                                                -------------  ------------ 
                                                     131           143 
Less accumulated depreciation and amortization        29            42 
                                                -------------  ------------ 
    Total                                           $102          $101 
                                                =============  ============ 

(4)  Accrued Expenses 

   A summary of accrued expenses follows (in thousands): 

                                  December 31,     June 30, 
                                      1995           1996 
                                 ---------------  ------------ 
                                                 (Unaudited) 
Payroll and employee benefits         $ 72           $ 94 
Legal                                   31             36 
Interest                                --             35 
Other                                   21             82 
                                 ---------------  ------------ 
    Total                             $124           $247 
                                 ===============  ============ 

                                      F-9 
<PAGE> 

                             THINKING TOOLS, INC. 
                  NOTES TO FINANCIAL STATEMENTS--(Continued) 
           (Information as of June 30, 1996 and for the six months 
                  ended June 30, 1995 and 1996 is unaudited) 

(5)  Uncompleted Contracts 

   Costs, estimated earnings, and billings on uncompleted fixed fee contracts 
are summarized as follows (in thousands): 
                                             December 31,     June 30, 
                                                 1995           1996 
                                           ---------------  ------------ 
                                                            (Unaudited) 
Costs incurred on uncompleted contracts          $ 249          $231 
Estimated earnings                                 309           208 
                                           ---------------  ------------ 
                                                   558           439 
Less billings to date                              757           486 
                                           ---------------  ------------ 
    Total                                        $(199)         $(47) 
                                           ===============  ============ 

   They are included in the accompanying balance sheets under the following 
captions (in thousands): 
<TABLE>
<CAPTION>
                                                           December 31,     June 30, 
                                                               1995           1996 
                                                         ---------------  ------------ 
                                                                          (Unaudited) 
<S>                                                            <C>            <C>  
Costs in excess of billings on uncompleted contracts           $  11          $ 24 
Billings in excess of costs on uncompleted contracts            (210)          (71) 
                                                         ---------------  ------------ 
    Total                                                      $(199)         $(47) 
                                                         ===============  ============ 
</TABLE>

(6)  Leases 

   The Company leases office space in Monterey, California, under a 
noncancelable operating lease expiring in 1998, which was assumed from 
SimBusiness, Inc. dba Maxis. Total rent expense under operating leases was 
approximately $13,000, $91,000, $43,000, and $52,000, for the years ended 
December 31, 1994 and 1995, and the six months ended June 30, 1995 and 1996, 
respectively. 

   The Company leases certain office equipment under noncancelable leases 
expiring in 2000, which were assumed from SimBusiness, Inc. dba Maxis. The 
leases are accounted for as capital leases. 

   The following is a summary of future minimum lease payments as of December 
31, 1995 (in thousands): 

                                                          Capital    Operating 
Year ending December 31,                                   leases      lease 
 ------------------------------------------------------------------ ------------
1996                                                        $14         $ 95 
1997                                                         14           98 
1998                                                          7           25 
1999                                                          1           -- 
2000                                                          1           -- 
                                                          --------- ------------
Future minimum lease payments                                37         $218 
                                                                    ============
Less amounts representing interest                            6 
                                                          --------- 
Present value of future minimum lease payments               31 
Less current installments under capital lease obligation     13 
                                                          --------- 
Long-term portion of capital lease obligations              $18 
                                                          ========= 

                                      F-10 
<PAGE> 

                             THINKING TOOLS, INC. 
                  NOTES TO FINANCIAL STATEMENTS--(Continued) 
           (Information as of June 30, 1996 and for the six months 
                  ended June 30, 1995 and 1996 is unaudited) 

(7)  Income Taxes 

   The components of income tax expense for each of the years ended December 
31, 1994 and 1995 are as follows (in thousands): 

                Current      Deferred      Total 
             ------------ ------------- ---------- 
Federal           $--           $--         $-- 
State              1            --           1 
             ------------ ------------- ---------- 
                  $1            $--         $1 
             ============ ============= ========== 

   The provision for income taxes differs from the amount obtained by 
applying the statutory federal income tax rate to income before taxes as 
follows (in thousands): 

<TABLE>
<CAPTION>
                                                         December 31,    December 31, 
                                                             1994            1995 
                                                       ---------------  --------------- 
<S>                                                         <C>              <C>    
Computed "expected" tax benefit                             $(248)           $(200) 
State franchise tax, net of federal income benefit              1                1 
Losses not utilized                                           248              200 
                                                       ---------------  --------------- 
                                                            $   1            $   1 
                                                       ---------------  --------------- 
</TABLE>

   Significant components of deferred tax assets and liabilities as of 
December 31, 1994 and December 31, 1995 are as follows (in thousands): 

<TABLE>
<CAPTION>
                                                          December 31,    December 31, 
                                                              1994            1995 
                                                        ---------------  --------------- 
<S>                                                          <C>              <C>   
Deferred tax asset: 
 Federal and state net operating loss carryforwards          $ 130            $ 369 
 Acquired intangible assets                                    160              149 
 Various accruals and reserves                                  --                8 
                                                        ---------------  --------------- 
    Total gross deferred tax assets                            290              526 
Less valuation allowance                                      (286)            (515) 
                                                        ===============  =============== 
    Net deferred tax assets                                      4               11 
    Total gross deferred tax liabilities                        (4)             (11) 
                                                        ---------------  --------------- 
    Net tax assets and liabilities                           $  --            $  -- 
                                                        ===============  =============== 
</TABLE>

   As of December 31, 1995, the Company has net operating loss carryforwards 
of $920,000 which expire for federal and state tax purposes in 2010 and 2000, 
respectively. Federal and California tax laws impose significant restrictions 
on the utilization of net operating loss carryforwards in the event of a 
shift in the ownership of the Company, which constitutes an "ownership 
change" as defined by the Internal Revenue Code, Section 382. The Company 
does not believe an ownership change has occurred. 

                                      F-11 
<PAGE> 

                             THINKING TOOLS, INC. 
                  NOTES TO FINANCIAL STATEMENTS--(Continued) 
           (Information as of June 30, 1996 and for the six months 
                  ended June 30, 1995 and 1996 is unaudited) 

(8)  Line of Credit 

   On November 1, 1995, the Company entered into an agreement with a bank to 
borrow up to $500,000 under a revolving line of credit secured by the 
Company's accounts receivable. Advances on this line accrued interest at the 
bank's prime rate plus 1.75% (8.75% as of December 31, 1995), until April 
1996, when the rate was increased to the bank's prime rate plus 5% following 
a default by the Company. Amounts outstanding as of December 31, 1995 and 
June 30, 1996 were approximately $79,000 and $52,000, respectively. The bank 
agreement requires the Company, among other things, to maintain minimum 
levels of earnings, tangible net worth, and certain minimum financial ratios. 
The agreement expires September 30, 1996. 

   As of July 31, 1996, the Company was in default of certain provisions of 
the credit agreement. The bank has agreed to waive the exercise of its rights 
under the agreement in return for the Company's commitment to repay the 
entire principal balance by August 31, 1996. No future borrowings will be 
available under the agreement. The amounts outstanding under the agreement 
were repaid as of the closing of the bridge financing. (See Note 13). 

(9)  Long-Term Debt 

   The Company has a note payable to Thinking Technologies, L.P., a related 
party, with a balance of $1,200,000 and $1,380,000 as of December 31, 1995 
and June 30, 1996, respectively. The note bears interest at 10% annually, due 
on September 27, 1999, collateralized by all company assets and the Company's 
common stock owned by its President. Interest is payable semiannually if 
specified gross profit levels are realized; otherwise, interest accrues for 
18 months and is added to principal if not paid within 30 days as of March 
30, 1996. Interest payable of $180,000 was converted to note payable in March 
1996. The note provides for payment if specified debt or equity financing is 
obtained prior to maturity; fair value is not practicable to estimate because 
of the uncertainty of the ultimate results of the terms of the note and the 
lack of available similar financing. Approximately $1,320,000 of the note 
balance was converted into an aggregate of 263,158 shares of Common Stock in 
July 1996. The remaining balance was reclassified to accrued expenses. (See 
Note 13). 

(10) Stockholder's Options 

   As of June 30, 1996, the Company has granted options, outside of the stock 
option plan (See Note 13), to purchase 58,964 shares of common stock at an 
exercise price of $0.79 per share to certain of its directors. In August 
1996, the Company issued to a nonaffiliate options to purchase 15,000 shares 
of the common stock at an exercise price of $1.00 per share. The options 
vested immediately. 

(11) Concentrations of Credit Risk 

   The Company's business is dependent on a few customers, the loss of which 
could have a material effect on the Company. The following schedule 
summarizes past distribution of sales by major customer: 

                    Years ended      Six months ended 
                    December 31,         June 30, 
                 ------------------  ------------------ 
                   1994      1995     1995      1996 
                 --------  --------  ----------------- 
                                        (Unaudited) 
Customer A          17%       14%      25%        0% 
Customer B          59         6        6         0 
Customer C           0        27       15        32 
Customer D           9        13       15        18 
Customer E           4         5       10         0 
Customer F           0         3        0        33 

                                      F-12 
<PAGE> 

                             THINKING TOOLS, INC. 
                  NOTES TO FINANCIAL STATEMENTS--(Continued) 
           (Information as of June 30, 1996 and for the six months 
                  ended June 30, 1995 and 1996 is unaudited) 

(12) Related Party Transactions 

   The Company had a note payable outstanding with Thinking Technologies, 
L.P., a related party, of approximately $122,000 and $352,000 as of December 
31, 1995 and June 30, 1996, respectively. The note bears interest at 7% 
annually, collateralized by the Company's accounts receivable. The original 
due date was December 31, 1995. The note was paid in full in August 1996 in 
the bridge financing (Note 13). 

(13) Subsequent Events and Pro Forma Financial Information 

   On July 1, 1996, in connection with a series of short-term loans from 
Thinking Technologies, L.P. (the Technologies Advances), the Company issued 
warrants to Thinking Technologies, L.P. to purchase 468,242 shares of common 
stock at an exercise price of $1.07 per share, expiring on December 31, 2006. 
The Company expects to record a non-cash interest expense of approximately 
$350,000 in the quarter ending September 30, 1996, in connection with the 
issuance of these warrants. 

   Under the Company's 1996 Stock Option Plan (the Plan), options to purchase 
up to an aggregate of 376,000 shares of common stock may be granted to 
officers, directors, employees or consultants. The Plan provides for issuing 
both incentive stock options, which must be granted at fair market value at 
the date of grant, as determined by the Plan Administrator, and nonqualified 
stock options. Options granted under the Plan are generally immediately 
exercisable, vest over a period determined at the time of grant by the Plan 
Administrator, and must be exercised within 10 years. 

   In August 1996, the Company granted options to purchase 52,000 shares of 
common stock to employees at $.79 per share which vested immediately. The 
Company also granted options to purchase 52,000 shares of common stock at 
$5.00 per share which vest over two years. In addition, the Company granted 
options to purchase 41,036 shares of common stock to members of the Company's 
board of directors at an exercise price of $1.00 per share which vested 
immediately. The Company has recorded non-cash compensation expenses of 
approximately $200,000 in July and August 1996 related to the difference 
between the deemed fair value of the common stock and the exercise price of 
the options at the grant date. 

   On August 28, 1996, the Company closed a bridge financing which provided 
gross proceeds of $1,825,000 to the Company from the issuance of promissory 
notes and warrants to purchase 456,250 shares of common stock. The Company 
repaid $502,000 plus $123,000 of accrued interest related to loans from 
Thinking Technologies, L.P. from a portion of such proceeds. Thinking 
Technologies, L.P. purchased $625,000 aggregate principal amount of such 
notes, which remain outstanding. 

   The warrants to purchase 456,250 shares of the Company's common stock are 
exercisable at a price equal to the lesser of $4.20 per share or 60% of the 
initial public offering price per share, expiring August 2001. In addition, 
the Company issued warrants to purchase 45,625 shares of common stock to the 
Placement Agent at an exercise price equal to the lesser of $4.20 per share 
or 60% of the initial public offering price per share. 

   The Company expects to record a non-cash interest expense of approximately 
$550,000 in connection with the issuance of the warrants issued in the bridge 
financing which will be amortized over the term of the loan, which is 
expected to be repaid out of the proceeds of the proposed public offering. 

                                      F-13 
<PAGE> 

                             THINKING TOOLS, INC. 
                  NOTES TO FINANCIAL STATEMENTS--(Continued) 
           (Information as of June 30, 1996 and for the six months 
                  ended June 30, 1995 and 1996 is unaudited) 

(13) Subsequent Events and Pro Forma Financial Information--(Continued) 

   Pursuant to a plan of reorganization, in August 1996, Thinking 
Technologies, L.P. converted $1,200,000 aggregate principal amount of 
outstanding indebtedness, plus an aggregate of approximately $120,000 of 
accrued interest (see Note 9), into an aggregate of 263,158 shares of common 
stock. 

   The effect of the above transactions has been reflected in the 
accompanying pro forma balance sheet as of June 30, 1996. (See below). 

   On August 28, 1996, the Company's Board of Directors approved the filing 
of a registration statement with the SEC for the proposed public offering of 
1,400,000 shares of the Company's common stock. A portion of the proceeds of 
the proposed public offering will be used to repay amounts outstanding under 
the bridge financing. In connection with the proposed public offering, the 
Company has agreed to sell, to its underwriter, options to purchase 140,000 
common shares for $.001 per option. The options are exercisable for a period 
of five years, at an exercise price equal to 120% of the initial public 
offering price. 

   The following table reflects the unaudited pro forma adjustments in the 
accompanying balance sheet (in thousands): 

<TABLE>
<CAPTION>
                                                                  June 30, 1996 
                                                 ------------------------------------------------- 
                                                 Historical       Adjustments        Pro forma 
                                                ------------- ----------------------------------- 
                                                                   (Unaudited) 
                                                 ------------------------------------------------- 
<S>                                                <C>              <C>               <C>     
                    ASSETS 
Current assets: 
 Cash                                              $     7          $ 1,093(a,c)      $ 1,100 
 Other current assets                                  232                                232 
                                                -------------                    ---------------- 
   Total current assets                                239                              1,332 
Other non-current assets                               111                                111 
                                                -------------                    ---------------- 
   Total assets                                    $   350                            $ 1,443 
                                                =============                    ================ 
     LIABILITIES AND STOCKHOLDERS' DEFICIT 
Current liabilities: 
 Notes payable                                     $   431             (351)(a,c)     $    80 
 Bridge notes payable                                   --            1,275 (c)         1,275 
 Other current liabilities                             425              (31)(a,b,c)       394 
                                                -------------                    ---------------- 
   Total current liabilities                           856                              1,749 
Long-term liabilities: 
 Note payable                                        1,380           (1,380)(b)            -- 
 Other long-term liabilities                            19                                 19 
                                                -------------                    ---------------- 
   Total liabilities                                 2,255                              1,768 
                                                -------------                    ---------------- 
Stockholders' deficit: 
 Common stock                                            3                                  3 
 Additional paid-in capital                             89            2,421(b,c,d)      2,510 
 Accumulated deficit                                (1,997)            (841)(a,c,d)    (2,838) 
                                                -------------                    ---------------- 
   Total stockholders' deficit                      (1,905)                              (325) 
                                                -------------                    ---------------- 
Total liabilities and stockholders' deficit        $   350                            $ 1,443 
                                                =============                    ================ 
</TABLE>

                                      F-14 
<PAGE> 

                             THINKING TOOLS, INC. 
                  NOTES TO FINANCIAL STATEMENTS--(Continued) 
           (Information as of June 30, 1996 and for the six months 
                  ended June 30, 1995 and 1996 is unaudited) 

(13) Subsequent Events and Pro Forma Financial Information--(Continued) 

(a) Gives effect to additional advances from Technologies of $151,000 and 
    additional accrued interest of $32,000. 

(b) Gives effect to the conversion by the Company of debt in the principal 
    amount of approximately $1,320,000 into an aggregate of 263,158 shares of 
    common stock with the remaining $60,000 of note payable reclassified to 
    accrued expenses. 

(c) Gives effect to the application of the estimated net proceeds from the 
    private placement of $1,825,000 less $258,000 of related expenses and 
    $550,000 related to the value attributable to the warrants (which will be 
    amortized to interest expense over the period that the debt is 
    outstanding), and the repayment of $123,000 and $502,000 of accrued 
    expenses and notes payable, respectively. 

(d) Represents a non-cash compensation expense of $200,000 resulting from the 
    difference between the exercise price and the deemed fair value of common 
    stock underlying vested options granted in July and August, and a 
    non-cash interest expense of $350,000 resulting from the issuance of 
    warrants on the Technologies Advances. 

                                      F-15 
<PAGE> 

[graphic] 

A screen from the Company's SimHealth product, which simulates the impact of 
choices and values on the financial health of the health care system and its 
usage and demand. 

                                       
<PAGE> 

     No dealer, salesman or any other person has been authorized to give any 
information or to make any representations other than those contained in this 
Prospectus in connection with the Offering made hereby, and, if given or 
made, such information or representations must not be relied upon as having 
been authorized by the Company or the Underwriter. This Prospectus does not 
constitute an offer to sell, or a solicitation of an offer to buy, any of the 
securities offered hereby in any jurisdiction to any person to whom it is 
unlawful to make such an offer or solicitation in such jurisdiction. Neither 
the delivery of this Prospectus nor any sale made hereunder shall under any 
circumstances create any implication that there has been no change in the 
affairs of the Company since the date hereof or that the information 
contained herein is correct as of any time subsequent to the dates as of 
which such information is furnished. 

                              TABLE OF CONTENTS 
                                                         Page 
                                                      --------- 
Prospectus Summary                                         3 
Risk Factors                                               8 
Use of Proceeds                                           14 
Dividend Policy                                           15 
Dilution                                                  15 
Capitalization                                            17 
Management's Discussion and Analysis of Financial 
  Condition and Results of Operations                     19 
Business                                                  23 
Management                                                33 
Principal Stockholders                                    38 
Certain Transactions                                      39 
Description of Securities                                 40 
Shares Eligible for Future Sale                           43 
Underwriting                                              45 
Legal Matters                                             47 
Experts                                                   47 
Available Information                                     47 
Index to Financial Statements                            F-1 

     Until        , 1996 (25 days after the date hereof), all dealers 
effecting transactions in the registered securities, whether or not 
participating in this distribution, may be required to deliver a Prospectus. 
This is in addition to the obligation of dealers to deliver a Prospectus when 
acting as Underwriter and with respect to their unsold allotments of 
subscriptions. 

                               1,400,000 Shares 

                             THINKING TOOLS, INC. 

                                 Common Stock 

                                  PROSPECTUS 

                              BARINGTON CAPITAL 
                                 GROUP, L.P. 

                                      , 1996 

                                       
<PAGE> 

                                   PART II 
                    INFORMATION NOT REQUIRED IN PROSPECTUS 

Item 24. Indemnification of Officers and Directors. 

   Article Ninth of the Certificate of Incorporation of Thinking Tools, Inc. 
(the "Registrant") eliminates the personal liability of directors to the 
Registrant or its stockholders for monetary damages for breach of fiduciary 
duty as a director, provided that such elimination of the personal liability 
of a director of the Registrant does not apply to (a) any breach of the 
director's duty of loyalty to the Registrant or its stockholders, (b) acts or 
omissions not in good faith or which involve intentional misconduct or a 
knowing violation of law, (c) actions prohibited under Section 174 of the 
Delaware General Corporation Law, or (d) any transaction from which the 
director derived an improper personal benefit. 

Item. 25 Other Expenses of Issuance and Distribution. 

   The following table sets forth the various expenses which will be paid by 
the Registrant in connection with the issuance and distribution of the 
securities being registered. With the exception of the registration fee, all 
amounts shown are estimates. 

SEC Registration Fee                                 $  5,565.66 
NASD Registration Fee                                   2,114.04 
Blue Sky Fee                                           40,000.00 
Printing and Engraving                                 75,000.00 
Legal fees and expenses                               150,000.00 
Accounting fees and expenses                          150,000.00 
Transfer Agent fees and expenses                        5,000.00 
Listing and NASDAQ SmallCap Market fees                25,000.00 
Underwriter's Non-Accountable Expense Allowance       294,000.00 
Miscellaneous expenses                                 47,320.30 
Total                                                $794,000.00 
                                                     ============= 

(1) Assuming an initial public offering price of $7.00 per Share. 

(2) If the Over-Allotment Option is exercised in full, the Underwriter's 
    Non-Accountable Expense Allowance and the Total would be $338,100 and 
    $838,100, respectively. 

Item 26. Recent Sales of Unregistered Securities. 

   In the past three years, the Registrant has made the following sales of 
unregistered securities, all of which sales were exempt from the registration 
requirements of the Securities Act pursuant to Section 4(2) thereof or as 
otherwise indicated herein. 

   In August 1996, the Company, through Barington Capital Group, L.P., acting 
as placement agent, issued and sold 18.25 Units of its securities, each 
consisting of one $100,000 principal amount 10% Senior Note and a 5-year 
Warrant to purchase 25,000 shares of Common Stock at an exercise price equal 
to the lesser of $4.20 per share or 60% of the initial public offering price 
per share, at $100,000 per Unit ($1,825,000, total) solely to accredited 
investors. The Company believes that each issuance and sale of such 
securities was exempt from registration pursuant to Section 4(2) of the 
Securities Act and/or Rule 506 promulgated thereunder. Barington Capital 
Group, L.P. received, for its services, a placement fee of 10% of the gross 
proceeds from the sale of the Units and reimbursement of certain other 
expenses. The names of the purchasers of such Units are as follows: 

                                      II-1 
<PAGE> 

   
                                Shares 
                              --------- 
B&B Trading Retirement Plan       6,250 
Alexander Mitchell                6,250 
Gerald Benjamin                   6,250 
Steven A. Endquist               12,500 
Michael Stoyka, M.D.              6,250 
Peter Horrigan                    6,250 
Lyonshare Venture Capital        56,250 
Steve Yavers                      6,250 
Wayne Saker                      12,500 
Paul Matusow                      6,250 
Floyd M. Smith                    6,250 
Dr. Harvey Kaplan                 6,250 
David Mitchell                   18,750 
Oliver Mitchell                   6,250 
Alladin Depot Partnership         6,250 
C.M. Solomon                      6,250 
Philip Schonfeld                  6,250 
Eric & Suzanne Partch             6,250 
Dr. Gershon Stern                12,500 
Marvin Barish                     6,250 
CLFS Equities, Ltd.               6,250 
Robert Jacobs IRA R/O             6,250 
John Bykowsky                     6,250 
Robert Spitzer                    6,250 
David Kohane                      6,250 
Donald Heimstaedt                 6,250 
James Levi                        6,250 
Jerry Politzer                    6,250 
Paul and Linda Salsgiver         12,500 
Guy Montanari                     6,250 
Woodland Partners                25,000 
Thinking Technologies, L.P.     156,250 
    

   In August 1996, the Company issued an aggregate of 145,036 options under 
its Stock Option Plan including (i) options to purchase 10,259 shares of 
Common Stock at an exercise price of $1.00 per share to each of Ted Prince, 
Fred Gluck, Esther Dyson and Fran Saldutti, directors of the Company, (ii) 
52,000 options at an exercise price of $0.794 per share to each of: 

Bruce Skidmore          14,000 
Rick Rosenbaum          11,000 
Greg Rossi               5,000 
Mike Bailey              3,000 
Debra Lavoy              3,000 
Riddle Kaufman           3,000 
Wendy Wibbens            3,000 
Bernadette Smith         2,000 
Randy Jones              2,000 
Bill Wiltshko            2,000 
Nancy Keleher            2,000 
Kelly McFadden           1,000 
Marianne Marinovich      1,000 


                                      II-2 
<PAGE> 

and (iii) 52,000 options at an exercise price of $5.00 per share to each of: 

Bruce Skidmore          10,000 
Rick Rosenbaum           8,000 
Greg Rossi               8,000 
Mike Baily               3,000 
Debra Lavoy              3,000 
Riddle Kaufman           3,000 
Wendy Wibbens            3,000 
Bernadette Smith         2,000 
Randy Jones              2,000 
Bil Wiltshko             2,000 
Nancy Keleher            2,000 
Kelly McFadden           1,000 
Marianne Marinovich      1,000 

The Company believes that the issuance of these options was exempt from 
registration pursuant to Sections 3(b) and 4(2) of the Securities Act and 
Rule 701 promulgated thereunder. 

   In September 1994, pursuant to the Technologies Agreement, Technologies 
purchased 61.11% of the Company's authorized and issued Common Stock for the 
purchase price of $100,000, and loaned to the Company $1,200,000. In August 
1996, such loan, including accrued interest thereon, was converted to 263,158 
shares of Common Stock. In July 1996, Technologies made additional loans to 
the Company in an aggregate principal amount of $502,000 and received the 
Technologies Warrants to purchase 468,242 shares of Common Stock. In August 
1996, upon the repayment by the Company of such loan, including accrued 
interest thereon, Technologies purchased 6.25 units in the Bridge Financing. 
The Company believes that each such transaction was exempt from registration 
pursuant to Section 4(2) of the Securities Act and/or Rule 506 promulgated 
thereunder. 

   The Company has granted options to purchase an aggregate of 73,964 shares 
of Common Stock to certain members of the Company's board of directors and to 
employees, including options to purchase 14,741 shares of common stock at an 
exercise price of $.79 per share to each of Ted Prince, Fred Gluck, Esther 
Dyson and Fran Saldutti, directors of the Company and options to purchase 
15,000 shares of common stock at an exercise price of $1.00 per share to 
James Houston, Esq. The Company believes that the issuance of such options 
was exempt from registration pursuant to Sections 3(b) and 4(2) of the 
Securities Act. 

                                      II-3 
<PAGE> 

Item 27. Exhibits 

(a) The following exhibits are filed herewith: 

<TABLE>
<CAPTION>
Exhibit No. 
- --------------------------------------------------------------------------------------------------------------- 
<S>        <C>
 1.1*      Form of Underwriting Agreement 
 3.1*      Certificate of Incorporation of Thinking Tools, Inc. 
 3.2*      By-Laws of Thinking Tools, Inc. 
 4.1*      Form of Underwriter's Option Agreement 
 4.2*      1996 Stock Option Plan 
 4.3       Form of Stock Certificate 
 4.4*      Form of Private Placement Investors' Warrant 
 4.5       Technologies Warrant 
 4.6*      Form of Private Placement Note 
 4.7       Form of Lock-up Agreement 
 5.1       Opinion of Squadron, Ellenoff, Plesent & Sheinfeld, LLP 
10.1       Employment Agreement between the Company and John Hiles 
10.2*      Form of Consulting Agreement 
10.3       Development Agreement between the Company and SystemHouse dated June 30, 1995 
10.4       Services Agreement between the Company and SystemHouse dated March 8, 1995 
10.5       Vertical Market Software Development/Licensing Agreement between the Company and Coopers dated 
           October 12, 1994 
10.6       Technologies Agreement between the Company and Technologies dated September 26, 1994 
10.7       Consent, Waiver and Amendment between the Company and Technologies dated August 31, 1996 
10.8       Lease between the Company and KI Monterey Research, Inc. dated August 19, 1994, as amended 
11.1*      Computation of Net Loss Per Share 
23.1       Consent of KPMG Peat Marwick LLP 
23.2       Consent of Squadron, Ellenoff, Plesent & Sheinfeld, LLP (contained in the Opinion filed as Exhibit 
           5.1). 
24.1*      Power of Attorney (Included on page II-5) 
</TABLE>

* Previously filed. 

Item 28. Undertakings 

   (a) The undersigned Registrant hereby undertakes that it will: 

    (1) File, during any period in which it offers or sells securities, a 
post-effective amendment to this registration statement: 

     (i) Include any prospectus required by section 10(a)(3) of the 
         Securities Act; 

                                      II-4 
<PAGE> 

     (ii) Reflect in the prospectus any facts or events which, individually 
    or together, represent a fundamental change in the information in the 
    registration statement; and notwithstanding the foregoing, any increase 
    or decrease in volume of securities offered (if the total dollar value of 
    securities offered (if the total dollar value of securities offered would 
    not exceed that which was registered) and any deviation from the low or 
    high end of the estimated maximum Offering range may be reflected in the 
    form of prospectus filed with the Commission pursuant to Rule 424(b) if, 
    in the aggregate, the changes in the volume and price represent no more 
    than a 20% change in the maximum aggregate Offering price set forth in 
    the "Calculation of Registration Fee" table in the effective registration 
    statement. 

     (iii) Include any additional or changed material information on the plan 
of distribution; 

    (2) For determining liability under the Securities Act, treat each 
post-effective amendment as a new registration statement of the securities 
offered, and the Offering of the securities at that time to be the initial 
bona fide Offering. 

    (3) File a post-effective amendment to remove from registration any of 
the securities that remain unsold at the end of the Offering. 

   (b) The Registrant hereby undertakes to provide the Underwriter at the 
closing specified in the Underwriting Agreement certificates in such 
denominations and registered in such names as required by the Underwriter to 
permit prompt delivery to each purchaser. 

   (c) Insofar as indemnification for liabilities arising under the 
Securities Act may be permitted to directors, officers, and controlling 
persons of the Registrant pursuant to the foregoing provisions, or otherwise, 
the Registrant has been advised that in the opinion of the Securities and 
Exchange Commission such indemnification is against public policy as 
expressed in the Securities Act and is, therefore, unenforceable. In the 
event that a claim for indemnification against such liabilities (other than 
the payment by the Registrant of expenses incurred or paid by a director, 
officer, or controlling person of the Registrant in the successful defense of 
any action, suit or proceeding) is asserted by such director, officer or 
controlling person in connection with the securities being registered, the 
Registrant will, unless in the opinion of its counsel the matter has been 
settled by controlling precedent, submit to a court of appropriate 
jurisdiction the question whether such indemnification by it is against 
public policy as expressed in the Securities Act and will be governed by the 
final adjudication of such issue. 

   (d) The Registrant hereby undertakes that it will: 

    (1) For determining any liability under the Securities Act, treat the 
    information omitted from the form of prospectus filed as part of this 
    registration statement in reliance upon Rule 430A under the Securities 
    Act and contained in a form of prospectus filed by the Registrant under 
    Rule 424(b)(1) or (4) or 497(h) under the Securities Act as part of this 
    registration statement as of the time the Securities and Exchange 
    Commission declared it effective. 

    (2) For determining any liability under the Securities Act, treat each 
    post-effective amendment that contains a form of prospectus as a new 
    registration statement relating to the securities offered in the 
    registration statement, and that Offering of the securities at that time 
    as the initial bona fide Offering of those securities. 

                                      II-5 
<PAGE> 

                                  SIGNATURES 

   
   Pursuant to the requirements of the Securities Act of 1933, the Registrant 
has duly caused this Amendment No. 2 to the Registration Statement to be 
signed on its behalf by the undersigned, thereunto duly authorized, in The 
City of Monterey, California on October 18, 1996. 
    

                                        THINKING TOOLS, INC. 

                                        By: /s/ John Hiles
                                            ------------------------------------
                                            John Hiles 
                                            President 

   
   Pursuant to the requirements of the Securities Act of 1933, this Amendment 
No. 2 to the Registration Statement has been signed by the following persons 
in the capacities and on the dates indicated. 
    

<TABLE>
<CAPTION>
             Signature                             Title                        Date 
 ---------------------------------  -------------------------------------------------------- 

<S>                                <C>                                  <C>
/s/ John Hiles                     President (Principal Executive,      October 18, 1996 
- ----------------------             Accounting and Financial 
John Hiles                         Officer) and Director 

/s/ Fred Knoll*                    Chairman of the Board and            October 18, 1996 
- ----------------------             Director 
Fred Knoll 

/s/ Esther Dyson*                  Director                             October 18, 1996 
- ---------------------- 
Esther Dyson 

/s/ Frederick Gluck*               Director                             October 18, 1996 
- ---------------------- 
Frederick Gluck 

/s/ Ted Prince*                    Director                             October 18, 1996 
- ---------------------- 
Ted Prince 

/s/ Fran Saldutti*                 Director                             October 18, 1996 
- ---------------------- 
Fran Saldutti 

*By: /s/ John Hiles 
- ---------------------- 
John Hiles, Attorney-in-Fact 
</TABLE>

                                      II-6 
<PAGE> 

   
PROSPECTUS          SUBJECT TO COMPLETION DATED           , 199 
                             THINKING TOOLS, INC. 
    

   This Prospectus relates to the Offering (the "Offering") by certain 
selling stockholders (the "Selling Stockholders") of 596,250 shares (the 
"Shares") of Common Stock, par value $.001 per share which may be sold from 
time to time by the Selling Stockholders, or by transferees, on or after the 
date of this Prospectus, subject to contractual restrictions which provide 
that such securities may not be sold for a period of 12 months after the 
closing of the Company Offering (defined below) without the prior written 
consent of Barington Capital Group, L.P., the underwriter of the Company 
Offering (the "Underwriter"). See "Certain Transactions," "Risk Factors-- 
Shares Eligible for Future Sale; Registration Rights--and Potential Adverse 
Effects from Sales of Selling Stockholder Securities", "Description of 
Securities," "Selling Stockholders" and "Concurrent Sales By Selling 
Stockholders." 

   No underwriting arrangements have been entered into by the Selling 
Stockholders. The distribution of the Shares by the Selling Stockholders may 
be effected from time to time in transactions on the Nasdaq SmallCap Market 
in negotiated transactions, through the writing of options on the Shares, or 
a combination of such methods of sale, at fixed prices that may be changed, 
at market prices prevailing at the time of sale, at prices related to such 
prevailing market prices, or at negotiated prices. The Selling Stockholders 
may effect such transactions by the sale of the Shares to or through 
broker-dealers, and such broker-dealers may receive compensation in the form 
of discounts, concessions or commissions from the Selling Stockholders and/or 
the purchasers of the Shares for whom such broker-dealers may act as agent or 
to whom they may sell as principal, or both. Usual and customary or 
specifically negotiated brokerage fees or commission may be paid by the 
Selling Stockholders in connection with sales of the Shares. No underwriting 
arrangements have been entered into by the Selling Stockholders. 

   The Selling Stockholders and intermediaries through whom the Shares are 
sold may be deemed "underwriters" within the meaning of the Securities Act of 
1933, as amended (the "Act"), with respect to the securities offered and any 
profits realized or commissions received may be deemed underwriting 
compensation. 

   The Company will not receive any proceeds from sales of the Shares. See 
"Selling Stockholders." 

   A registration statement under the Act has been filed with the Securities 
and Exchange Commission with respect to an underwritten public offering on 
behalf of the Company of 1,400,000 shares of Common Stock, plus up to 210,000 
shares which may be offered pursuant to the exercise of the Underwriter's 
over-allotment option (the "Company Offering"). See "Concurrent Sales By 
Company." 

   AN INVESTMENT IN THE SECURITIES OFFERED HEREBY INVOLVES A HIGH DEGREE OF 
RISK AND IMMEDIATE SUBSTANTIAL DILUTION AND SHOULD BE CONSIDERED CAREFULLY 
AND ONLY BY PERSONS WHO CAN AFFORD THE LOSS OF THEIR ENTIRE INVESTMENT. SEE 
"RISK FACTORS" BEGINNING ON PAGE 8 HEREIN. 

   THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES 
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE 
SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED 
UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE 
CONTRARY IS A CRIMINAL OFFENSE. 

                                      Alt-1 
<PAGE> 

                                 The Offering 

<TABLE>
<CAPTION>
<S>                                             <C>
Securities Offered .............................596,250 shares of Common Stock, $.001 par value per share. See 
                                                "Description of Securities." See "Certain Transaction" "Risk 
                                                Factors--Shares Available for Future Sale and Potential Adverse 
                                                Effects from Sales of Selling Stockholder Securities" and 
                                                "Description of Securities." No underwriting arrangements have 
                                                been entered into by the Selling Stockholders. See "Selling 
                                                Stockholders." 

Common Stock Outstanding after the 
  Company Offering(1)(2) .......................4,431,758 

Shares of Common Stock to be Outstanding 
  After this Offering(1)(2) ....................5,058,008 

Use of Proceeds ................................The Company will not receive any proceeds from the sale of the 
                                                Shares. 

Risk Factors ...................................An investment in the securities offered hereby involves certain 
                                                risks and immediate substantial dilution. Prospective investors 
                                                should consider carefully the factors set forth under "Risk 
                                                Factors." 

Trading Symbol  ................................The Common Stock is traded on the Nasdaq SmallCap Market under 
                                                the symbol TSIM. 
</TABLE>

(1) Does not include (i) 456,250 shares of Common Stock issuable upon 
    exercise of warrants (the "Bridge Warrants") to purchase Common Stock at 
    an exercise price equal to the lesser of $4.20 or 60% of the initial 
    public offering price per share in the Company Offering issued by the 
    Company to purchasers of its 10% Senior Secured Promissory Notes (the 
    "Bridge Notes") in connection with a debt financing consummated prior to 
    the Company Offering (the "Bridge Financing"); (ii) 468,242 shares of 
    Common Stock issuable upon exercise of warrants to purchase Common Stock 
    at an exercise price of $1.07 per share issued to Thinking Technologies, 
    L.P. ("Technologies"), a principal stockholder of the Company (the 
    "Technologies Warrants"); (iii) 376,000 shares of Common Stock reserved 
    for issuance under the Company's 1996 Stock Option Plan (the "Plan"), 
    options to purchase 145,036 of which have been granted under the Plan, 
    including options to purchase 52,000 shares exercisable at $.79 per share 
    and options to purchase 52,000 shares exercisable at $5.00 per share 
    granted to certain of the Company's employees, and options to purchase 
    41,036 shares of Common Stock at an exercise price of $1.00 per share 
    granted to certain members of the Company's board of directors; (iv) 
    58,964 shares of Common Stock issuable upon exercise of outstanding 
    options granted to certain members of the Company's board of directors 
    outside of the Plan at an exercise price of $0.79 per share; and (v) 
    15,000 shares of Common Stock issuable upon exercise of options granted 
    outside of the Plan to a non-affiliate of the Company at an exercise 
    price of $1.00 per share. See "Management--1996 Stock Option Plan", 
    "Certain Transactions", and "Description of Securities." 

(2) Does not include (i) up to 210,000 shares of Common Stock issuable upon 
    exercise of the Over-Allotment Option and (ii) 140,000 shares of Common 
    Stock issuable upon exercise of the Underwriter's Options. 

                                      Alt-2 
<PAGE> 

                         CONCURRENT SALES BY COMPANY 

   A registration statement under the Securities Act of 1933 (the "Act") has 
been filed by the Company with the Securities and Exchange Commission with 
respect to an underwritten public offering by the Company of 1,400,000 shares 
of Common Stock, plus 210,000 shares which may be offered pursuant to 
exercise of the Underwriter's over-allotment option. 

   Concurrent sales of securities by both the Company and by the Selling 
Stockholders would likely have an adverse effect on the market price of the 
Common Stock. The Shares are subject to contractual restrictions upon resale 
with the Underwriter. See "Selling Stockholders--Lock-Up Arrangements", "Risk 
Factors--Shares Eligible for Future Sale; Registration Rights--and Potential 
Adverse Effects from Sales of Selling Stockholder Securities" and 
"Description of Securities." 

                                      Alt-3 
<PAGE> 

                             SELLING STOCKHOLDERS 

   The following table sets forth the name of each person who is a Selling 
Stockholder, the number of Selling Stockholder Securities owned by each 
person's account, the percentage or outstanding shares of Common Stock of the 
Company owned by such person prior to this Offering, the number of shares 
being sold by such person, the number of shares of Common Stock such person 
will own after the completion of this Offering, and the percentage of 
outstanding shares of Common Stock of the Company owned by such person after 
the completion of this Offering. 

<TABLE>
<CAPTION>
                                  Beneficial Ownership                  Beneficial Ownership 
                                   Prior to Offering      Number of      Sold          After Offering 
                                 ----------------------- Shares Being   ----------------------- 
                                  Shares    Percentage       Sold       Shares    Percentage 
                                 ----------------------  ------------  --------  ------------- 
<S>                              <C>            <C>      <C>            <C>       <C>
B&B Trading Retirement Plan        6,250        * 
Alexander Mitchell                 6,250        * 
Gerald Benjamin                    6,250        * 
Steven A. Endquist                12,500        * 
Michael Stoyka, M.D.               6,250        * 
Peter Horrigan                     6,250        * 
Lyonshare Venture Capital         56,250        * 
Steve Yavers                       6,250        * 
Wayne Saker                       12,500        * 
Paul Matusow                       6,250        * 
Floyd M. Smith                     6,250        * 
Dr. Harvey Kaplan                  6,250        * 
David Mitchell                    18,750        * 
Oliver Mitchell                    6,250        * 
Alladin Depot Partnership          6,250        * 
C.M. Solomon                       6,250        * 
Philip Schonfeld                   6,250        * 
Eric & Suzanne Partch              6,250        * 
Dr. Gershon Stern                 12,500        * 
Marvin Barish                      6,250        * 
CLFS Equities, Ltd.                6,250        * 
Robert Jacobs IRA R/O              6,250        * 
John Bykowsky                      6,250        * 
Robert Spitzer                     6,250        * 
David Kohane                       6,250        * 
Donald Heimstaedt                  6,250        * 
James Levi                         6,250        * 
Jerry Politzer                     6,250        * 
Paul and Linda Salsgiver          12,500        * 
Guy Montanari                      6,250        * 
Woodland Partners                 25,000        * 
Thinking Technologies, L.P.      156,250        * 
</TABLE>

* less than 1% 

Lock-Up Arrangements 

   The Selling Stockholders have agreed prior to the closing of the Company 
Offering that they will not publicly sell, offer to sell, contract to offer 
to sell, transfer, assign or pledge any of the Shares which are being 
registered on their behalf by the Registration Statement of which this 
Prospectus forms a part, for a period of 12 months from the closing of the 
Company Offering without the prior written consent of the Underwriter. The 
Underwriter has agreed that it will not consent to the release of any holders 
of the Bridge Warrants from such lock-up for a period of one year from the 
effective date of the Company Offering. See "Risk Factors--Shares Available 
for Future Sale and Potential Adverse Effects from Sales of Selling 
Stockholder Securities", "Description of Securities", and "Certain 
Relationships and Related Transactions." 

                                      Alt-4 
<PAGE> 

Plan of Distribution 

   The distribution of the Shares by the Selling Stockholders may be effected 
from time to time in transactions on the Nasdaq in negotiated transactions, 
through the writing of options on the Shares, or a combination of such 
methods of sale, at fixed prices that may be changed, at market prices 
prevailing at the time of the sale, at prices related to such prevailing 
market prices or at negotiated prices. The Selling Stockholders may effect 
such transactions by the sale of the Shares to or through broker-dealers, and 
such broker-dealers may receive compensation in the form of discounts, 
concessions or commissions from the Selling Stockholders and/or the 
purchasers of the Shares for whom such broker-dealers may act as agent or to 
whom they may sell as principal, or both. Usual and customary or specifically 
negotiated brokerage fees or commissions may be paid by the Selling 
Stockholders in connection with sales of the Shares. No underwriting 
arrangements have been entered into by the Selling Stockholders. 

   The Selling Stockholders and intermediaries through whom the Shares are 
sold may be deemed "underwriters" without the meaning of the Act with respect 
to the securities offered and any profits realized or commissions received 
may be deemed underwriting compensation. The Company has agreed to indemnify 
the Selling Stockholders against certain liabilities, including liabilities 
under the Act. 

                                      Alt-5 


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