AMERICAN CENTURY WORLD MUTUAL FUNDS INC
N-30D, 1998-01-23
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                                     ANNUAL
                                     REPORT

                            [american century logo]
                                    American
                                Century(reg.sm)

                                NOVEMBER 30, 1997

                                    TWENTIETH
                                     CENTURY
                                      GROUP

                              International Growth
                             International Discovery
                                Emerging Markets


                               TABLE OF CONTENTS

Report Highlights .........................................................    1

Our Message to You ........................................................    2

Market Perspective ........................................................    3

International Growth

           Performance & Portfolio Information ............................    4

           Management Q & A ...............................................    5

           Schedule of Investments ........................................    8

           Financial Highlights ...........................................   38

International Discovery

           Performance & Portfolio Information ............................   13

           Management Q & A ...............................................   14

           Schedule of Investments ........................................   17

           Financial Highlights ...........................................   41

Emerging Markets

           Performance & Portfolio Information ............................   23

           Management Q & A ...............................................   24

           Schedule of Investments ........................................   26

           Financial Highlights ...........................................   42

Statements of Assets and Liabilities ......................................   31

Statements of Operations ..................................................   32

Statements of Changes in Net Assets .......................................   33

Notes to Financial Statements .............................................   34

Independent Auditors' Report ..............................................   43

Proxy Voting Results ......................................................   44

Share Class and Retirement
Account Information .......................................................   47

Background Information

           Investment Philosophy and Policies .............................   48

           Comparative Indices ............................................   48

Glossary ..................................................................   49

    American  Century  Investments  offers you nearly 70 fund  choices  covering
stocks,  bonds,  money markets,  specialty  investments and blended  portfolios.
We've organized our funds into three distinct groups,  based on investment style
and objectives, to help simplify your fund decisions. These groups appear below.


               AMERICAN CENTURY INVESTMENTS--FAMILY OF FUNDS
- -------------------------------------------------------------------------------
        Benham                American Century          Twentieth Century
     Group(reg. tm)                 Group                      Group
- -------------------------------------------------------------------------------
   MONEY MARKET FUNDS         ASSET ALLOCATION &           GROWTH FUNDS
 GOVERNMENT BOND FUNDS          BALANCED FUNDS          INTERNATIONAL FUNDS
 DIVERSIFIED BOND FUNDS   CONSERVATIVE EQUITY FUNDS
  MUNICIPAL BOND FUNDS         SPECIALTY FUNDS
- -------------------------------------------------------------------------------
                                                       International Growth
                                                     International Discovery
                                                         Emerging Markets

We welcome your comments or questions about this report.

See the back cover for ways to contact us by mail, phone or e-mail.

Twentieth  Century and American Century are registered marks of American Century
Services  Corporation.  Benham Group is a registered  mark of Benham  Management
Corporation.


                          AMERICAN CENTURY INVESTMENTS


                               REPORT HIGHLIGHTS

MARKET PERSPECTIVE

*     The Morgan Stanley Capital Inter-national EAFE(reg.tm) Index, the standard
      investment   performance  measure  of  international  stock  markets,  was
      essentially flat for the year ended November 30, 1997.  Specifically,  the
      EAFE Index lost 0.40% during the period.

*     Currency devaluations in Southeast Asia precipitated steep market declines
      throughout the region. Japan, which accounts for a large portion of EAFE's
      value, finished the year sharply lower.

*     Strong  gains in European  markets  offset  losses in Asia.  Investors  in
      Europe are benefiting from the region's  increased focus on  profitability
      and stock performance.

INTERNATIONAL GROWTH

*     International  Growth performed strongly,  with a return of 18.12% for the
      year.  Our  focus  on  the  earnings  strength  of  individual   companies
      identified  problems in Southeast  Asia,  prompting an early exit from the
      region.

*     The fund's strong performance  relative to its peers garnered top industry
      rankings among international funds.

*     Fund returns were boosted by holdings in European financial services firms
      that continued to benefit from  liberalization  and  restructuring  of the
      financial sector in Europe.

INTERNATIONAL DISCOVERY

*     International  Discovery  had a total  return of 17.76% for the year ended
      November  30,  1997.  Its  strong  performance  relative  to its peers and
      benchmark  can be  explained  by  our  early  research  and  avoidance  of
      Southeast Asian  companies as well as good  performance by a number of our
      European holdings.

*     Financial stocks contributed  significantly to returns. Profits were up at
      European banking and financial  service providers as employers and workers
      pursue the U.S. model of retirement planning, which increasingly relies on
      equity investing.

*     During the final six months of the year, the fund's  weighting in Canadian
      companies  doubled  as  we  discovered  some  exciting   opportunities  in
      financial services, technology and energy.

EMERGING MARKETS

*     Emerging Markets opened at a time when developing countries struggled with
      the effects of the economic woes in Southeast  Asia. The fund's return was
      -17.00%  during its first two months  compared  to a return of -19.60% for
      its benchmark  index,  the MSCI Emerging  Markets Free Index.  It beat its
      benchmark because fewer assets were invested in Asia.

*     Southeast  Asian  companies that export goods to developed  economies were
      primary fund holdings.  These  corporations tend to benefit if their local
      currency is devalued.

*     Holdings in the  financial  sector hurt returns.  Many emerging  countries
      raised  interest  rates  dramatically  to  protect  their own  currencies,
      impacting bank and other financial  services  companies'  profits in these
      countries.

                             INTERNATIONAL GROWTH
                               INVESTOR CLASS(1)
TOTAL RETURNS:                                       AS OF 11/30/97
     6 Months                                           1.32%(2)
     1 Year                                              18.12%

NET ASSETS:                                           $1.7 billion
     (AS OF 11/30/97)

INCEPTION DATE:                                          5/9/91

TICKER SYMBOL:                                            TWIEX


                            INTERNATIONAL DISCOVERY
TOTAL RETURNS:                                           AS OF 11/30/97
    6 Months                                                2.28%(2)
    1 Year                                                   17.76%

NET ASSETS:                                              $626.3 million
    (AS OF 11/30/97)

INCEPTION DATE:                                              4/1/94

TICKER SYMBOL:                                                TWEGX


                               EMERGING MARKETS
    TOTAL RETURN:                                        AS OF 11/30/97
    Since Inception                                        -17.00%(2)

NET ASSETS:                                               $11.8 million

    (AS OF 11/30/97)

INCEPTION DATE:                                              9/30/97

TICKER SYMBOL:                                                 N/A

(1) See Share Classes, page 47.

(2) Not annualized.

         Many of the investment terms in this report are defined in the
                              Glossary on page 49.


     ANNUAL REPORT                                     REPORT HIGHLIGHTS       1


                              OUR MESSAGE TO YOU

           [photo of James E. Stowers, Jr. and James E. Stowers III]

    Our  international  funds  did a very  good  job of  navigating  the  strong
crosscurrents  in foreign  markets this year.  Both Inter-  national  Growth and
International   Discovery   finished  their  fiscal  year  far  ahead  of  their
performance  benchmark.  Once again,  investment  discipline  and  attention  to
business  fundamentals  made the  difference.  Our  management  team  focuses on
individual  companies and looks for sound,  fast-growing  businesses  worldwide.
They build  portfolios  according  to the  earnings  growth and  quality of each
company, not by countries or geographic regions.

    Although  foreign  markets were  volatile  this year,  1997 served as a good
example of the diversification  that international  returns can offer investors,
even in times of  crisis.  Over the long  term,  global  markets in fact tend to
perform  independently.  But when a crisis  occurs,  as it did in Southeast Asia
later in the year,  they  often move  together.  Once the  downward  adjustments
subside and investors regain perspective, markets decouple and go their separate
ways again.  Regional volatility  notwithstanding,  1997 saw a wide variation in
returns.

    Both  International  Growth and  International  Discovery  were able to take
advantage of this  performance  variation,  and invested in some very attractive
opportunities,  especially in Europe.  We also avoided  much--though not all--of
the  turbulence  afflicting  the economies of Southeast  Asia.  Our newest fund,
Emerging Markets, was just two months old when the fiscal year ended, and opened
directly  into a very  difficult  environment.  Southeast  Asia's  troubles  had
already  spread to Latin  America,  Eastern  Europe,  and Russia,  so the fund's
opportunities  were limited.  In spite of these conditions,  our management team
found  individual  companies  we think  have the  fundamentals  not only to come
through the tough times in good shape,  but also to make rapid progress once the
present  troubles  abate.  This  approach  has helped  International  Growth and
International Discovery produce strong returns over the years, and we believe it
will do the same for Emerging Markets.

    In 1997,  we were  active  globally  on more than one front.  In July,  J.P.
Morgan agreed to become a significant minority shareholder in our company.  J.P.
Morgan has been in business over 150 years,  serving  institutions,  governments
and individuals  with complex  financial  needs.  In the proposed  relationship,
American  Century  will  continue  to operate  as an  independent  company.  Our
corporate  management  team will remain the same,  and the  Stowers  family will
retain voting control of the company.

    On a more personal note, 1998 also marks the 40th year since we launched our
first mutual funds. Not many fund companies can claim a 40-year track record, or
a fund family that includes  nearly 70 stock,  bond, and money market funds that
provide investors with such a wide range of choice and flexibility.

    Whatever your financial  goals, we believe we have an outstanding  lineup of
funds to help you pursue them.

Sincerely,

/s/James E. Stowers, Jr.            /s/James E. Stowers III                     
James E. Stowers, Jr.               James E. Stowers III                        
Chairman of the Board and Founder   Chief Executive Officer                     
                                    American Century Investment Management, Inc.


2      OUR MESSAGE TO YOU                     AMERICAN CENTURY INVESTMENTS


                              MARKET PERSPECTIVE


CHALLENGE AND OPPORTUNITY

    Foreign  markets  were  unusually  volatile  during  the  fiscal  year ended
November 30, 1997.  Stocks were buffeted by broad and dramatic  economic changes
that made for some very sharp contrasts among returns.

    The Morgan Stanley Capital International EAFE Index was essentially flat for
the twelve months,  declining 0.40%.  Good performance in Europe saved the Index
from a larger deficit,  as the chart on this page suggests.  Japan, which is the
second  largest  economy in the world (behind the U.S.) and accounts for a large
portion of EAFE's value, finished the year sharply lower.

    The contrast in performance between Asia and Europe was even more pronounced
when one looks at individual  countries.  Some Asian markets,  such as Thailand,
were down over 70% (measured in local  currencies),  while  selected  markets in
Europe and Latin  America were up 40% or more.  The  declines in Southeast  Asia
were even more extreme when  measured in U.S.  dollars.  Many Asian  currencies,
such as the Thai baht, were allowed to "float"--to  find their real value in the
marketplace  instead of being  artificially  pegged to the value of more  stable
currencies, such as the U.S. dollar.  Unfortunately,  but not unexpectedly,  the
real market value of these currencies was much lower than their  artificial,  or
pegged,  value. By the end of November,  the baht was the weakest it had been in
almost 30 years, compared to the dollar.

    Markets in countries such as Germany,  Switzerland,  and Mexico were hitting
new records until the depth and reach of the Asian crises became clearer late in
the year. When the more mature--and presumably more stable--economy of Hong Kong
came under  pressure,  other  developing  economies,  such as  Brazil,  appeared
vulnerable.  It was also feared  (correctly  in many cases) that the earnings of
European and U.S. multinational companies would be hurt.

HARD TIMES IN THE FAR EAST

    What caused the implosion of so many Asian markets this year? One reason was
Asia's belief in growth for growth's sake.  This served the region well for much
of the 90s,  but Asian  manufacturing  capacity  eventually  became  dangerously
overbuilt.  Yet Japanese and European  investors were still more than willing to
finance the  building  boom.  As a result,  too much cash began  chasing too few
opportunities.

    Speculation was rampant.  Awash in cash, local and foreign speculators alike
pushed stock and real estate prices into the stratosphere (often by pledging one
inflated  investment  as collateral  for another).  This created a credit vacuum
under many Far Eastern economies.

    Will  Southeast  Asia  recover?  We believe that it will,  but it may take a
while and involve extensive economic reforms.

THE TRANSFORMATION OF EUROPE

    While Asia struggled,  European  commerce  continued to undergo  fundamental
transformation.  Many  companies that used to be  government-operated  have been
privatized (shares have been sold to individuals and the public). Many more have
now begun to "Americanize,"  making changes that U.S. business effected early in
the  decade.   European   corporations  are  now  emphasizing  earnings  growth,
streamlining   operations  to  become  more   efficient  and   productive,   and
consolidating--through  mergers and acquisitions--to take advantage of corporate
synergies and increase  global clout.  Management  compensation  is increasingly
linked to  profitability  and share price  performance,  which has the effect of
aligning the interests of European  managers with those of shareholders like the
funds.

    The coming European Monetary Union is driving many of these changes,  but so
is the success of the American  business model,  which focuses on  profitability
and often uses a company's  stock price to grade the quality of its  management.
The European  transformation has momentum and should be hard to derail,  even if
the Asian crises intensify.  Europe could stumble,  but we believe its long-term
potential is real.

[line graph - data below]

MARKET PERFORMANCE MEASUREMENTS
Comparative Growth of $1.00 for the year ended November 30, 1997

           MSCI EAFE IX ND   MSCI Europe IX ND   MSCI Japan IX ND
11/30/96          $1.00           $1.00           $1.00
12/31/96          $0.99           $1.02           $0.93
01/31/97          $0.95           $1.02           $0.83
02/28/97          $0.97           $1.04           $0.85
03/31/97          $0.97           $1.07           $0.82
04/30/97          $0.98           $1.06           $0.85
05/31/97          $1.04           $1.11           $0.94
06/30/97          $1.10           $1.16           $1.02
07/31/97          $1.12           $1.22           $0.98
08/31/97          $1.03           $1.15           $0.90
09/30/97          $1.09           $1.26           $0.89
10/31/97          $1.01           $1.20           $0.80
11/30/97          $1.00           $1.22           $0.75

Value on 11/30/97
MSCI Europe Index $1.22
MSCI EAFE (reg. tm) Index $1.00
MSCI Japan Index $0.75

Comparative One-Year Returns for the year ended November 30, 1997

     MSCI Europe Index ....................  21.75%
     MSCI EAFE(reg.tm) Index ..............   -.40%
     MSCI Japan Index ..................... -24.64%


ANNUAL REPORT                                         MARKET PERSPECTIVE       3


<TABLE>
<CAPTION>
                             INTERNATIONAL GROWTH

TOTAL RETURNS AS OF NOVEMBER 30, 1997(1)
                                                                         AVERAGE ANNUAL RETURNS
                              6 MONTHS          1 YEAR         3 YEARS          5 YEARS       LIFE OF FUND
INVESTOR CLASS
(inception 5/9/91)
<S>                             <C>             <C>            <C>              <C>              <C>   
  International Growth          1.32%           18.12%         13.36%           15.42%           13.75%
  MSCI EAFE(reg.tm) Index      -4.27%           -0.40%          6.19%           11.31%          6.73%(2)

ADVISOR CLASS
(inception 10/2/96)
  International Growth          1.21%           17.97% .......................................   19.04%
  MSCI EAFE(reg.tm) Index      -4.27%           -0.40% .......................................    2.50%

INSTITUTIONAL CLASS
(inception 11/20/97)
  International Growth .......................................................................   -0.43%
  MSCI EAFE(reg.tm) Index ....................................................................   N/A(3)

(1) Returns for periods less than one year are not annualized.

(2) For the period from  5/31/91  (the date  nearest the class's  inception  for
    which data are available) to 11/30/97.

(3) A return for less than one month is not available.
</TABLE>

See  pages  47,  48  and  49 for  more  information  about  share  classes,  the
comparative index and returns.

[line graph - data below]

GROWTH OF $10,000 OVER LIFE OF FUND (Investor Class)

VALUE ON 11/30/97
International Growth           $22,819
MSCI EAFE                      $15,272

                   INTERNATIONAL GROWTH                 MSCI EAFE INDEX
DATE             ACCT VALUE        RETURN          ACCT VALUE          RETURN
5/31/91           $10,000                            $10,000
6/30/91            $9,596           -4.04%            $9,265           -7.35%
9/30/91           $10,231            2.31%           $10,060            0.60%
12/31/91          $10,802            8.02%           $10,228            2.28%
3/31/92           $11,418           14.18%            $9,014           -9.86%
6/30/92           $12,112           21.12%            $9,205           -7.95%
9/30/92           $11,611           16.11%            $9,344           -6.56%
12/31/92          $11,325           13.25%            $8,983          -10.17%
3/31/93           $12,301           23.01%           $10,060            0.60%
6/30/93           $12,818           28.18%           $11,072           10.72%
9/30/93           $13,654           36.54%           $11,806           18.06%
12/31/93          $16,155           61.55%           $11,908           19.08%
3/31/94           $15,568           55.68%           $12,324           23.24%
6/30/94           $15,778           57.78%           $12,954           29.54%
9/30/94           $16,344           63.44%           $12,967           29.67%
12/31/94          $15,387           53.87%            $12,83           28.34%
3/31/95           $14,879           48.79%           $13,073           30.73%
6/30/95           $15,741           57.41%           $13,168           31.68%
9/30/95           $16,581           65.81%           $13,717           37.17%
12/31/95          $17,216           72.16%           $14,273           42.73%
3/31/96           $17,614           76.14%           $14,685           46.85%
6/30/96           $18,455           84.55%.          $14,917           49.17%
9/30/96           $18,500           85.00%           $14,899           48.99%
12/31/96          $19,700           97.00%           $15,136           51.36%
3/31/97           $20,789          107.89%           $14,899           48.99%
6/30/97           $23,610          136.10%           $16,832           68.32%
9/30/97           $24,501          145.01%           $16,714           67.14%
11/30/97          $22,819          128.19%           $15,272           52.72%

$10,000 investment made 5/31/97

Past  performance  does not  guarantee  future  results.  Investment  return and
principal  value will fluctuate,  and redemption  value may be more or less than
original  cost.  Data quoted is for Investor Class only;  performance  for other
classes will vary due to differences in fee structures  (see Total Returns table
above).

The line  representing  International  Growth's total return includes  operating
expenses (such as transaction  costs and management  fees) that reduce  returns,
while the total return line of the MSCI EAFE(reg.tm) index does not.


PORTFOLIO AT A GLANCE
                                               11/30/97          11/30/96
Number of Companies                              122               101
Portfolio Turnover                               163%              158%
Expense Ratio (for Investor Class)              1.38%(1)          1.65%(1)

(1) Management voluntarily lowered fees beginning in August 1996. The lower fees
became permanent in August 1997 following a proxy vote. For more information see
Note 2 on page 35.


4     INTERNATIONAL GROWTH                   AMERICAN CENTURY INVESTMENTS


                             INTERNATIONAL GROWTH

MANAGEMENT Q & A

    An interview with Henrik Strabo and Mark Kopinski, portfolio managers on the
International Growth investment team.

INTERNATIONAL GROWTH PERFORMED VERY WELL THIS YEAR. WHAT EXPLAINS ITS
OUTSTANDING RETURNS?

    This was a difficult  year in foreign  markets.  The fund's  benchmark,  the
Morgan Stanley Capital  International  EAFE Index, was slightly  negative,  down
- -0.40% for the twelve months ended  November 30, 1997.  The markets of Southeast
Asia and Japan were much weaker. We think this serves to highlight just how well
International Growth performed, returning 18.12%.

    International  Growth  also did  well  versus  other  foreign  stock  funds.
Morningstar,  a large mutual fund rating service, ranked International Growth in
the top 3% out of 413 foreign stock funds for the twelve  months ended  November
30.  International  Growth  also  ranked in the top 10% out of 253 funds for the
three-year period and 14% out of 108 for five years.*

    We're both pleased and proud of International  Growth's  performance record,
but  we're  also  aware  that it sets a very  high  hurdle  going  forward.  Our
challenge is to keep returns ahead of the competition.

    Our investment  methodology is largely  responsible  for the good results to
date. This year, the "bottom up" approach,  which focuses on the earnings growth
of individual  companies,  led us to faster-growing  European companies and away
from  slower-growing  companies in troubled  areas,  such as Southeast  Asia and
Japan. In Europe,  many companies  continued the robust growth they have enjoyed
for more than two years.  Low interest  rates and  optimism  that low rates will
continue  enabled  businesses to restructure and re-engineer  their  operations,
resulting in greater  efficiencies and profitability.  Fund returns were boosted
by holdings

* Morningstar rankings are based on average annual total returns.
Past performance is no guarantee of future results.

[bar chart - data below]

INTERNATIONAL GROWTH'S ONE-YEAR RETURNS(1) (Periods ended November 30)

          INTL GROWTH           EAFE(reg.tm)
1991(2)        2.50%           -2.74%
1992           8.77%           -8.11%
1993          31.04%           24.27%
1994           7.28%           14.84%
1995           5.93%            7.57%
1996          16.35%           11.76%
1997          18.12%           -0.40%

This chart  illustrates  the fund's returns over the past six years and compares
them with EAFE(reg.tm)'s  returns.  International Growth's total returns include
operating  expenses,  while  the  index's  returns  do  not.  See  page 48 for a
description of EAFE(reg.tm). Past performance is no guarantee of future results.
Investment return and principal value will fluctuate and redemption value may be
more or less than original cost.

(1) Investor Class.

(2) Returns from  5/31/91(the  date closest to fund's  inception  for which data
    were available) to 11/30/91.


ANNUAL REPORT                                  INTERNATIONAL GROWTH      5


                             INTERNATIONAL GROWTH

in financial service firms that continued to benefit from the boom brought on by
the liberalization and restructuring of the financial sector in Europe.

WHICH EUROPEAN HOLDINGS CONTRIBUTED TO  PERFORMANCE THIS YEAR?

    Some of the year's top performers  include  Credit Suisse Group,  one of the
fund's larger positions,  Skandia,  an insurance company located in Sweden,  and
Credito   Italiano,   an  Italian   bank.   Credit   Suisse  is  a  very  large,
well-capitalized banking, brokerage, and insurance company based in Switzerland.
Skandia is  benefiting  from  higher  demand for its  expanded  product  line in
Europe,  the United States and Japan.  Credito  Italiano is  under-going a major
transformation which is typical of the better growth companies in Europe. Unlike
its  competitors,  Credito  Italiano has  restructured  to focus on  high-profit
growth areas,  such as asset  management  and mutual funds.  We are pleased with
Credito Italiano's  performance and expect it and Inter-national  Growth's other
bank holdings to benefit from improving  internal  efficiencies  as well as from
changes in European economic structure.

    In general,  fund performance benefited from a significant stake in European
bank stocks.  Strong growth in the banking and financial  sector is being driven
by several  important  catalysts,  most notably the trend  toward  consolidation
currently  taking  place in the  industry,  labor  reforms that will tighten the
region's  work forces and the decline in  interest  rates as European  countries
prepare for EMU (European Monetary Union).

    The fund's best stock this year was Phillips  Electronics  N.V., the largest
electronics  manufacturer in Europe.  Phillips  dramatically improved its bottom
line with  several  recently  implemented  cost-cutting  measures,  including  a
smaller  and more  productive  work  force  and the sale or  turnaround  of less
profitable  operations.  SAP, a German software  company,  also ranked among the
best performers.  SAP, the largest supplier of business  application software in
the world,  is  experiencing  booming  demand  globally  as  companies  focus on
productivity and business  efficiency.  SAP's software  products can help manage
operations as diverse as personnel and production.

    Finally,   telecommunications   equipment  stocks,   such  as  Nokia,  added
significantly to performance.

WHAT  SIGNIFICANT  CHANGES DID YOU MAKE TO THE  PORTFOLIO  SINCE THE  SEMIANNUAL
REPORT?

    Obviously the greatest change has been the shift from Japanese  companies to
companies in Europe. A number of disappointing  earnings announcements caused us
to sell many Japanese holdings. Our earnings momentum strategy led us to begin


TOP TEN HOLDINGS                                 % of fund investments
                                                As of             As of
                                               11/30/97          5/31/97

Novartis AG                                      4.7%             3.8%

British Aerospace PLC                            2.3%             2.1%

ING Groep N.V.                                   2.1%             2.8%

Novo Nordisk A/S Cl B                            1.9%              -

Misys plc                                        1.8%             1.5%

Credito Italiano                                 1.8%             0.5%

Credit Suisse Group                              1.7%             2.4%

Axa-UAP                                          1.7%             1.0%

Pearson plc                                      1.7%              -

Roche Holding AG                                 1.6%             1.5%


See the Schedule of Investments for company nationalities and descriptions.


TOP FIVE INDUSTRIES
                                                 % of fund investments
                                               As of              As of
                                              11/30/97           5/31/97

Financial Services                              12.6%             6.9%

Banking                                         12.2%             6.2%

Pharmaceuticals                                 10.8%             7.2%

Computer Software &
Services                                        7.8%              3.3%

Electrical & Electronic
Components                                      5.3%              11.3%


6      INTERNATIONAL GROWTH                   AMERICAN CENTURY INVESTMENTS


                             INTERNATIONAL GROWTH

decreasing  these  positions  way  back in  April.  We  also  pay  attention  to
macroeconomic  events,  and when the growth of Japan's  gross  domestic  product
slowed significantly,  it confirmed what we were seeing in individual companies,
so we reacted quickly.

    On a sector and industry  basis,  our greatest shifts were in the electrical
and electronic components industry, where we reduced the fund's holdings by more
than half in response to Asia's negative impact on earnings.  In the banking and
financial  services  sectors,  we  increased  weightings  from  13.1%  of  total
portfolio assets to 24.8%. The fund maintains  meaningful  positions in computer
software and services  companies  as well as in  pharmaceuticals,  both of which
continue to demonstrate accelerating growth.

WHICH STOCKS WERE DISAPPOINTING?

    Asian  companies  tended to dominate this list.  Examples  include  Shanghai
Industrial,  a Hong  Kong-based  conglomerate  that had been growing well in the
flourishing economy that China has enjoyed, and Standard Chartered, a U.K.-based
bank with offices throughout Asia.  Standard  Chartered's  fundamental  business
remains sound, but its earnings outlook has become slightly  clouded,  again due
to its Asian exposure.  But we believe the company is well-positioned to benefit
from the  expected  "flight  to  quality,"  as  investors  look for more  stable
companies, so we continue to watch it closely.

    Another  disappointing  performer was Fujikura,  a Japanese  manufacturer of
fiber optics,  which  suffered a  significant  price decline when it announced a
drop in order growth. This followed a similar announcement by Corning, Inc., the
global leader in fiber optics production. Both firms had built up inventories in
response to demand from customers who, fearing future shortages in the supply of
fiber optic cable,  double- and triple-ordered.  Demand slowed  significantly in
the third quarter, however, leaving the companies with excess inventories.

GIVEN THE  VOLATILITY WE SAW THIS YEAR,  WHAT IS YOUR OUTLOOK FOR  INTERNATIONAL
MARKETS?

    We firmly believe that there will continue to be very significant investment
opportunities  internationally.  The world is changing at a tremendous  pace. As
American-style  capitalism  makes its way into almost every corner of the globe,
it is creating an  unprecedented  number of attractive  businesses.  Despite the
setbacks  in Asia,  there are many  excellent  companies  in other  parts of the
world.  Europe  continues to benefit from the  introduction  of  market-oriented
policies, corporate restructuring, lower taxes, and the introduction of a common
currency  in 1999.  Longer-term,  we are  confident  that  pockets  of Asia will
recover and once again provide significant returns. We are, as always,  watching
company earnings very carefully.

[bar chart - data below]

INTERNATIONAL GROWTH'S INVESTMENTS BY COUNTRY

                       11/30/97             5/31/97
United Kingdom            19%                 11%
Switzerland               13%                 13%
Netherlands               10%                 10%
France                    10%                 10%
Japan                      9%                  9%
Germany                    9%                  9%
Canada                     7%                  7%
Sweden                     4%                  4%
Other                     19%*                19%

*No other country represented more than 4% of investments as of 11/30/97.


ANNUAL REPORT                                  INTERNATIONAL GROWTH       7


<TABLE>
<CAPTION>
                            SCHEDULE OF INVESTMENTS
                             INTERNATIONAL GROWTH
NOVEMBER 30, 1997

Shares                                                                         Value
- -------------------------------------------------------------------------------------------

COMMON STOCKS & RIGHTS

<S>                <C>                                                <C> 
ARGENTINA--0.8%
                   386,000  YPF Sociedad Anonima ADR                    $     12,955,125
                                                                     -----------------------
(energy - production and marketing)

AUSTRALIA--0.8%

                 1,945,000  Woodside Petroleum Limited                        13,957,449
                                                                     -----------------------
                              (energy - production and marketing)
AUSTRIA--1.0%
                   112,900  VA Technologie AG                                 17,003,916
                                                                     -----------------------
                              (business services and supplies)

BRAZIL--0.3%
                11,568,000  Centrais Eletricas Brasileiras S/A                 5,391,378
                                                                     -----------------------
                              (energy - production and marketing)
CANADA--6.7%

                   399,700  Bank of Nova Scotia                               17,348,358

                              (banking)

                   258,100  Canadian National Railway Company                 13,323,278

                              (railroad)

                   682,000  Geac Computer Corp. Ltd.                          17,291,288

                              (computer software and services)

                   497,700  Investor's Group, Inc.                            13,702,174

                              (financial services)

                   289,000  Newbridge Networks Corp.(1)                       12,174,125

                              (communications equipment)

                   483,000  Newcourt Credit Group Inc.                        15,247,990

                              (financial services)

                   131,220  Newcourt Credit Group Inc.
                              Subscription Receipts(1)                         4,101,057

                              (financial services)

                   148,000  Northern Telecom Ltd.                             13,304,772

                              (communications equipment)

                   250,000  QLT PhotoTherapeutics, Inc.(1)                     3,072,655

                              (biotechnology)

                   244,200  Talisman Energy, Inc.(1)                           7,177,561
                                                                     -----------------------

                              (energy - production and marketing)

                                                                             116,743,258
                                                                     -----------------------

COLOMBIA--0.1%

                   200,000  Banco de Bogota                                      992,177
                                                                     -----------------------

                              (banking)

DENMARK--1.9%

                   268,000  Novo Nordisk A/S Cl B                             32,808,018
                                                                     -----------------------

                              (pharmaceuticals)


Shares                                                                         Value
- -------------------------------------------------------------------------------------------

FINLAND--2.7%

                 2,475,400  Merita OY Ltd. Cl A                         $     12,536,375

                              (banking)

                   104,000  Nokia Corp. Cl A ADR                               8,645,000

                              (communications equipment)

                    58,200  Raisio Group plc                                   6,691,851

                              (food and beverage)

                   600,000  Sampo Insurance Company Ltd.                      18,907,031
                                                                     -----------------------

                              (insurance)

                                                                              46,780,257
                                                                     -----------------------

FRANCE--9.9%

                   142,000  Accor SA                                          26,844,646

                              (leisure)

                    71,675  Alcatel Alsthom Compagnie Generale                 8,984,720

                              (communications services)

                   415,000  Axa-UAP                                           30,116,376

                              (insurance)

                   214,000  Cap Gemini SA                                     18,234,208

                              (computer software and services)

                   103,000  Compagnie Francaise d'Etudes et de
                              Construction Technip                            10,678,095

                              (chemicals and resins)

                   240,000  Dassault Systemes S.A. ADR                         6,300,000

                              (computer software and services)

                    73,000  Elf Aquitaine SA                                   8,470,686

                              (energy)

                   301,100  France Telecom S.A. ADR(1)                        10,914,875

                              (communications services)

                    32,000  Pinault-Printemps-Redoute SA                      16,370,505

                              (retail - general merchandise)

                   251,000  Rhone-Poulenc CI A                                11,284,434

                              (chemicals and resins)

                   175,100  Societe Generale CI A                             23,017,228
                                                                     -----------------------
                              (banking)

                                                                             171,215,773
                                                                     -----------------------

GERMANY--6.3%

                   269,000  Bayerische Hypotheken-und
                              Wechsel-Bank AG                                 11,669,124

                              (banking)

                   212,000  Bayerische Vereinsbank AG                         12,592,572

                              (financial services)

                   333,000  Deutsche Bank AG                                  21,356,564

                              (financial services)

                   338,600  Deutsche Pfandbrief-und
                              Hypothekenbank AG                               19,200,454

                              (banking)

See Notes to Financial Statements


8      INTERNATIONAL GROWTH                   AMERICAN CENTURY INVESTMENTS


                            SCHEDULE OF INVESTMENTS
                             INTERNATIONAL GROWTH

NOVEMBER 30, 1997

Shares                                                                         Value
- -------------------------------------------------------------------------------------------

                    40,000  Mannesmann AG                              $     18,622,058

                             (industrial equipment and machinery)

                   149,000  Siemens AG                                        8,749,050

                             (electrical and electronic components)

                   295,000  VEBA AG                                          17,531,046
                                                                       ---------------------

                             (utilities)

                                                                            109,720,868
                                                                       ---------------------

HONG KONG--1.0%

                   550,000  HSBC Holdings plc                                13,269,213

                             (banking)

                   686,000  Hutchison Whampoa Limited                         4,570,198
                                                                       ---------------------

                             (construction and property
                              development)

                                                                             17,839,411
                                                                       ---------------------

INDONESIA--0.1%

                 1,171,600  PT Gudang Garam                                   2,489,349
                                                                       ---------------------

                             (tobacco)

IRELAND--0.6%

                   159,000  CBT Group Plc ADR(1)                             11,259,187
                                                                       ---------------------

                             (computer software and services)

ISRAEL--0.5%

                   196,000  Check Point Software
                             Technologies Ltd.(1)                             8,856,750
                                                                       ---------------------

                             (computer software and services)

ITALY--3.0%

                   140,390  Banca Popolare di Bergamo Credito
                             Varesino SpA                                     2,246,975

                             (banking)

                 1,266,200  Banco Ambrosiano Veneto S.p.A.                    4,148,447

                             (financial services)

                 1,266,200  Banco Ambrosiano Veneto S.p.A.

                             Rights for Bonds(1)                                666,977

                             (financial services)

                 1,266,200  Banco Ambrosiano Veneto S.p.A.
                             Rights for Stock(1)                              4,602,871

                             (financial services)

                11,221,000  Credito Italiano                                 30,722,713

                             (banking)

                 1,236,600  Mondadori (Arnoldo) Editore SpA                   9,806,559
                                                                       ---------------------

                             (printing and publishing)

                                                                             52,194,542
                                                                       ---------------------


Shares                                                                         Value
- -------------------------------------------------------------------------------------------

JAPAN--9.5%

                  137,000  Circle K Japan Co., Ltd.                     $     6,880,862

                             (retail - food and drug)

                1,372,000  Dainippon Ink & Chemicals Inc.                     4,837,610

                             (chemicals and resins)

                  674,000  Fujikura Ltd.                                      4,853,328

                             (electrical and electronic components)

                  129,000  Keyence Corporation                               18,800,392

                             (control and measurement)

                2,243,000  Long-Term Credit Bank of Japan,
                             Ltd. (The)                                       3,778,609

                             (banking)

                1,651,000  Minebea Company Ltd.                              18,369,598

                             (electrical and electronic components)

                      196  NTT Data Corp.                                     9,521,645

                             (communications services)

                   74,000  Nintendo Co., Ltd.                                 7,653,673

                             (electrical and electronic components)

                  122,000  Orix Corp.                                         8,192,282

                             (financial services)

                  234,000  Promise Co., Ltd.                                 12,926,151

                             (financial services)

                   84,000  Rohm Co. Ltd.                                      8,293,046

                             (electrical and electronic components)

                  764,000  Shiseido Co., Ltd.                                10,356,278

                             (consumer products)

                  295,000  Sony Corp.                                        25,194,907

                             (electrical and electronic components)

                  643,000  Takeda Chemical Inds.                             18,792,478

                             (pharmaceuticals)

                  385,000  Terumo Corporation                                 6,033,301
                                                                       ---------------------

                             (medical equipment and supplies)

                                                                            164,484,160
                                                                       ---------------------

MEXICO--1.1%

                  130,700  Desc S.A. de C.V.                                  4,909,419

                             (chemicals and resins)

                2,251,600  Grupo Financiero Banamex Accival,
                             SA de CV Cl B(1)                                 4,945,378

                             (financial services)

                  265,000  Panamerican Beverages Inc. Cl A                    9,076,250
                                                                       ---------------------
                             (food and beverage)

                                                                             18,931,047
                                                                       ---------------------

See Notes to Financial Statements


ANNUAL REPORT                                  INTERNATIONAL GROWTH     9


                            SCHEDULE OF INVESTMENTS
                             INTERNATIONAL GROWTH

NOVEMBER 30, 1997

Shares                                                                         Value
- -------------------------------------------------------------------------------------------

NETHERLANDS--10.3%

                   294,898  Assurantieconcern Stad Rotterdam           $     15,164,063

                             (insurance)

                   550,000  Getronics N.V.                                   18,900,629

                             (computer software and services)

                   901,601  ING Groep N.V.                                   36,653,766

                             (financial services)

                   138,300  KLM Royal Dutch Air Lines NV                      4,975,321

                             (airlines)

                   884,026  Koninklijke Ahold NV                             23,574,027

                             (retail - food and drug)

                   130,000  Phillips Electronics N.V.                         8,710,000

                             (electrical and electronic components)

                   306,000  Randstad Holdings N.V.                           11,362,415

                             (business services and supplies)

                   314,500  Stork N.V.                                       11,519,799

                             (business services and supplies)

                   352,000  Unilever N.V.                                    20,438,000

                             (diversified companies)

                 1,158,400  VNU Tijdschriftengroep Nederland                 27,743,316
                                                                       ---------------------
                             (printing and publishing)

                                                                            179,041,336
                                                                       ---------------------

NORWAY--0.6%

                    65,700  Petroleum Geo-Services ASA(1)                     4,229,927

                             (energy - services)

                   182,000  Smedvig ASA Cl A                                  4,859,137

                             (energy - services)

                    31,875  Smedvig ASA Cl B                                    806,693
                                                                       ---------------------

                             (energy - services)

                                                                              9,895,757
                                                                       ---------------------

PORTUGAL--0.5%

                   198,500  Portugal Telecom SA                               9,142,897
                                                                       ---------------------

                             (communications services)

RUSSIAN FEDERATION--0.5%

                    60,000  Lukoil Holding ADR                                4,575,000

                             (energy - services)

                   188,305  Unified Energy Systems GDR(1)                     4,307,477
                                                                       ---------------------

                             (utilities)

                                                                              8,882,477
                                                                       ---------------------


Shares                                                                         Value
- -------------------------------------------------------------------------------------------

SOUTH AFRICA--0.7%

                   846,900  Amalgamated Banks of South Africa                 5,211,961

                             (banking)

                   263,434  Liberty Life Association of Africa Ltd.           6,669,215
                                                                       ---------------------
                             (insurance)

                                                                             11,881,176
                                                                       ---------------------

SWEDEN--3.8%

                   174,000  Electrolux AB Cl B                               13,700,965

                             (consumer products)

                   237,200  Ericsson (L.M.) Telephone Co. ADR                 9,584,362

                             (communications equipment)

                   216,000  Hennes & Mauritz AB Cl B                          9,986,661

                             (retail - apparel)

                   400,000  Skandia Forsakrings AB                           21,083,986

                             (financial services)

                   984,100  Skandinaviska Enskilda Banken                    11,597,889
                                                                       ---------------------

                             (banking)

                                                                             65,953,863
                                                                       ---------------------

SWITZERLAND--12.7%

                     7,000  ABB AG                                            9,311,409

                             (electrical and electronic components)

                   206,000  Credit Suisse Group                              30,117,804

                             (banking)

                    14,000  Julius Baer Holding AG                           22,824,486

                             (financial services)

                    18,000  Nestle S.A.                                      26,480,611

                             (food and beverage)

                    50,600  Novartis AG                                      80,822,497

                             (pharmaceuticals)

                     3,136  Roche Holding AG                                 28,059,295

                             (pharmaceuticals)

                    18,000  Union Bank of Switzerland                        22,908,632
                                                                       ---------------------
                             (banking)

                                                                            220,524,734
                                                                       ---------------------

UNITED KINGDOM--19.1%

                 1,613,200  Amvescap Plc                                     11,661,003

                             (financial services)

                 1,441,720  British Aerospace PLC                            39,348,322

                             (aerospace and defense)

                 2,213,565  British-Borneo Petroleum Syndicate plc           16,580,203

                             (energy - production and marketing)

                   277,800  British Petroleum Co. plc                         3,800,329

                             (energy - production and marketing)

See Notes to Financial Statements


10      INTERNATIONAL GROWTH                   AMERICAN CENTURY INVESTMENTS


                            SCHEDULE OF INVESTMENTS
                             INTERNATIONAL GROWTH

NOVEMBER 30, 1997

Shares                                                                         Value
- -------------------------------------------------------------------------------------------

                 1,046,000  Cable & Wireless plc                       $      9,504,251

                             (communications equipment)

                    36,300  Cairn Energy plc(1)                                 288,450

                             (energy - production and marketing)

                   309,167  COLT Telecom Group plc(1)                         3,360,049

                             (communications services)

                   904,000  Compass Group PLC                                10,778,965

                             (restaurants)

                   411,200  Flextech plc(1)                                   3,906,426

                             (broadcasting and media)

                 3,245,500  General Electric Company plc                     21,130,508

                             (diversified companies)

                   385,000  Glaxo Wellcome plc ADR                           17,589,687

                             (pharmaceuticals)

                 1,186,000  Hays plc                                         14,622,158

                             (business services and supplies)

                   210,000  Johnson Matthey PLC                               1,945,359

                             (metals and mining)

                 4,275,223  Ladbroke Group plc                               19,422,941

                             (leisure)

                 2,155,000  Lloyds TSB Group plc                             24,567,162

                             (financial services)

                 1,098,979  Misys plc                                        30,996,296

                             (computer software and services)

                 2,218,000  Next Plc                                         27,720,253

                             (retail - general merchandise)

                 2,064,700  Pearson plc                                      28,768,343

                             (printing and publishing)

                 3,050,000  Pilkington plc                                    6,593,466

                             (building and home improvements)

                   534,000  Railtrack Group PLC                               8,973,632

                             (railroad)

                   682,904  Siebe plc                                        12,421,650

                             (diversified companies)

                   671,472  Standard Chartered plc                            7,456,373

                             (banking)

                   295,000  Zeneca Group plc                                  9,416,462
                                                                       ---------------------
                             (pharmaceuticals)

                                                                            330,852,288
                                                                       ---------------------

UNITED STATES--0.5%

                   177,000  Transocean Offshore                               8,396,438
                                                                       ---------------------
                             (energy - services)

Shares                                                                         Value
- -------------------------------------------------------------------------------------------

TOTAL COMMON STOCKS & RIGHTS--95.0%                                      $1,648,193,631
                                                                       ---------------------

  (Cost $1,489,549,627)


 PREFERRED STOCKS

BRAZIL--0.8%

                20,447,000  Petroleo Brasileiro S/A                           4,442,195

                             (energy - production and marketing)

                    80,000  Telecomunicacoes Brasileiras S.A. ADR             8,350,000
                                                                       ---------------------
                             (communications services)

                                                                             12,792,195
                                                                       ---------------------

GERMANY--2.9%

                   281,700  Henkel KGaA                                      17,315,725

                             (chemicals and resins)

                    77,000  SAP AG                                           23,709,101

                             (computer software and services)

                    13,000  Wella Aktiengesellschaft                          9,362,064
                                                                       ---------------------
                             (consumer products)

                                                                             50,386,890
                                                                       ---------------------

TOTAL PREFERRED STOCKS--3.7%                                                 63,179,085
                                                                       ---------------------

   (Cost $53,876,443)


 TEMPORARY CASH INVESTMENTS--1.3%

    Repurchase Agreement, J.P. Morgan Securities, Inc.,

        5.64%, due 12/1/97, collateralized by

        $22,124,000 par value U.S. Treasury Notes,

        7.75%, due 1/31/00

              (Delivery value $23,110,857)

   (Cost $23,100,000)                                                        23,100,000
                                                                       ---------------------

TOTAL INVESTMENT SECURITIES--100.0%                                      $1,734,472,716
                                                                       =====================
   (Cost $1,566,526,070)
</TABLE>

See Notes to Financial Statements


ANNUAL REPORT                                  INTERNATIONAL GROWTH   11


                            SCHEDULE OF INVESTMENTS

                             INTERNATIONAL GROWTH

NOVEMBER 30, 1997

FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS

      Contracts        Settlement                              Unrealized
       to Sell            Dates           Value                Gain (Loss)
- --------------------------------------------------------------------------------

    44,022,121  CHF        1/28/98     $  31,287,932            $215,283

    42,332,147  DEM        1/28/98        24,173,360             161,613

   147,659,373  FRF        1/28/98        25,200,382             198,574

    29,649,296  GBP        1/28/98        49,801,330            (83,908)

 4,698,655,511  JPY        1/28/98        37,518,484           (310,997)

    53,135,657  NLG        1/28/98        26,933,177             177,682

    79,020,596  SEK        1/28/98        10,275,947             142,611
                                         ------------          ---------

                                       $ 205,190,612            $500,858
                                         ============          =========
 (Value on Settlement Date $205,691,470)


NOTES TO SCHEDULE OF INVESTMENTS

ADR = American Depositary Receipt

CHF = Swiss Franc

DEM = German Mark

FRF = French Franc

GBP = British Pound

GDR = Global Depositary Receipt

JPY = Japanese Yen

NLG = Netherlands Guilder

SEK = Swedish Krona

(1) Non-income producing.


12      INTERNATIONAL GROWTH                   AMERICAN CENTURY INVESTMENTS


<TABLE>
<CAPTION>
                            INTERNATIONAL DISCOVERY

TOTAL RETURNS AS OF NOVEMBER 30, 1997(1)
                                                                    AVERAGE ANNUAL RETURNS
                              6 MONTHS           1 YEAR          3 YEARS           LIFE OF FUND(2)

<S>                             <C>              <C>             <C>                   <C>   
International Discovery ......  2.28%            17.76%          18.67%                17.46%

MSCI EAFE(reg.tm) Index ...... -4.27%            -0.40%           6.19%                 6.02%
</TABLE>

(1) Returns for periods less than one year are not annualized.

(2) The fund's inception was 4/1/94.

See  pages  48 and 49 for more  information  about  the  comparative  index  and
returns.


PORTFOLIO AT A GLANCE
                                               11/30/97          11/30/96
Number of Companies                               154               183
Portfolio Turnover                               146%              130%
Expense Ratio                                  1.70%(1)          1.88%(1)

(1) Management voluntarily lowered fees beginning in August 1996. The lower fees
became permanent in August 1997 following a proxy vote. For more information see
Note 2 on page 35.


[line graph - data below]

GROWTH OF $10,000 OVER LIFE OF FUND

VALUE ON 11/30/97
International Discovery         $17,998
MSCI EAFE Index                 $12,391

                 INTERNATIONAL DISCOVERY                     EAFE
DATE             ACCT VALUE      RETURN          ACCT VALUE      RETURN
4/1/94            $10,000                         $10,000
6/30/94           $10,760         7.60%           $10,511         5.11%
9/30/94           $11,420        14.20%           $10,521         5.21%
12/31/94          $10,760         7.60%           $10,414         4.14%
3/31/95           $10,100         1.00%           $10,608         6.08%
6/30/95           $11,020        10.20%           $10,685         6.85%
9/30/95           $11,800        18.00%           $11,130        11.30%
12/31/95          $11,825        18.25%           $11,581        15.81%
3/31/96           $12,931        29.31%           $11,916        19.16%
6/30/96           $14,479        44.79%           $12,104        21.04%
9/30/96           $14,559        45.59%           $12,089        20.89%
12/31/96          $15,511        55.11%           $12,281        22.81%
3/31/97           $16,712        67.12%           $12,089        20.89%
6/30/97           $18,293        82.93%           $13,658        36.58%
9/30/97           $19,789        97.89%           $13,562        35.62%
11/30/97          $17,998        79.98%           $12,391        23.91%

$10,000 investment made 3/31/94

Past  performance  does not  guarantee  future  results.  Investment  return and
principal  value will fluctuate,  and redemption  value may be more or less than
original cost.

The line representing  International Discovery's total return includes operating
expenses (such as transaction  costs and management  fees) that reduce  returns,
while the total return line of the MSCI EAFE(reg.tm) Index does not.


ANNUAL REPORT                               INTERNATIONAL DISCOVERY       13


                            INTERNATIONAL DISCOVERY

MANAGEMENT Q & A

    An interview with Henrik Strabo and Mark Kopinski, portfolio managers on the
International Discovery investment team.

HOW DID THE FUND PERFORM THIS YEAR?

    The fund continued to produce strong returns.  We're especially pleased with
performance  in  light  of the  volatility  in  foreign  markets.  International
Discovery had a total return of 17.76% for the twelve months ended  November 30,
1997.  By  comparison,  the  Morgan  Stanley  Capital  International  EAFE Index
returned  -0.40%.  The fund has repeatedly  outdistanced  its benchmark,  as the
chart just below indicates. Our strategy is to invest in fast-growing companies.
As a result, we have owned companies with strong earnings streams,  and that has
helped us  outperform  the Index.  This year our approach  also helped avoid the
turbulent markets of Southeast Asia and Japan.

HOW HAS INTERNATIONAL DISCOVERY PERFORMED COMPARED TO OTHER INTERNATIONAL EQUITY
FUNDS?

    We're very proud of our  rating.  Morningstar,  a large  mutual  fund rating
service,  awarded  Discovery  five  stars,  its highest  rating,  for the fund's
consistent  ability to produce  outstanding  returns for  investors  relative to
other  international  equity  funds--while  taking  substantially less risk. The
Morningstar  rating  covers the  three-year  period  ended  November  30,  1997.
Morningstar  also ranked Discovery in the top 4% out of 413 foreign equity funds
for the  twelve  months  ended  November  30,  and 1% out of 253  funds  for the
three-year period.*

THIS HAS BEEN A VOLATILE YEAR FOR THOSE WHO INVEST ABROAD.  HOW DID YOU MINIMIZE
RISK?

    International  Discovery's portfolio is built on a stock-by-stock basis. The
focus is on individual companies that demonstrate  accelerating earnings growth.
We visit and get to know these companies  firsthand.  We want to understand each
business in detail.  This helped us miss many of the big  declines in  countries
like  Thailand,  Indonesia,  the  Philippines  and South  Korea  because  we saw
earnings  slowing  and  exited  the  stocks  relatively  early.  By  looking  at
individual  companies on a fundamental  basis,  we can often avoid being heavily
exposed in the wrong country at the wrong time. At fiscal year end,  Discovery's
holdings in emerging market  countries stood at 15.8%,  compared to 26.5% a year
earlier.

We were also  concerned  about  the big  picture.  We  monitor  important  macro
developments such as inflation trends, budget deficits, interest rates,

[bar chart - data below]

INTERNATIONAL DISCOVERY'S ONE-YEAR RETURNS
(Periods ended November 30)

               INTL DISCOVERY         EAFE
1994 *             7.80%             3.49%
1995               5.75%             7.57%
1996              34.06%            11.76%
1997              17.76%            -0.40%

This chart  illustrates the fund's returns over the past four years and compares
them  with  EAFE(reg.tm)'s  returns.  International  Discovery's  total  returns
include operating expenses,  while the index's returns do not. See page 48 for a
description of EAFE(reg.tm). Past performance is no guarantee of future results.
Investment return and principal value will fluctuate and redemption value may be
more or less than original cost.

* Return from 4/1/94 inception date to 11/30/94.


* Morningstar  rankings are based on average annual total  returns.  Morningstar
proprietary  star  ratings,   which  may  change  monthly,   reflect  historical
risk-adjusted  performance  as of November 30, 1997.  The ratings are calculated
from the fund's average total returns in excess of 90-day  Treasury bill returns
with   appropriate  fee  adjustments  and  a  risk  factor  that  reflects  fund
performance below 90-day Treasury bill returns. The top ten percent of the funds
in an  investment  category  receive five stars and the next 22.5%  receive four
stars. Past performance is no guarantee of future results.


14      INTERNATIONAL DISCOVERY                AMERICAN CENTURY INVESTMENTS


                            INTERNATIONAL DISCOVERY

export-import balances, political developments and government policies--anything
that may impact the earnings  progression  of the companies we are  researching.
Clearly, the trends in Southeast Asia were not encouraging.

WHICH STOCKS CONTRIBUTED TO FUND PERFORMANCE THIS YEAR?

    At year  end,  the  fund's  top  three  holdings  were  also  among the most
significant  contributors.  Long-time holding  Marschollek,  Lautenschlaeger und
Partner  was our  largest  position  and also  proved to be our best  performer.
Marschollek is a German financial services company that benefited from expansion
on two fronts.  It increased its traditional  product lines to include a broader
range of insurance products and mutual funds, and entered new markets in Austria
and northern Italy. Both are enhancing its long-term profit outlook.

    Marschollek is also benefiting from trends  affecting  European  banking and
financial service  companies.  These sectors are increasing  profits as European
demographics  and financial  markets  change.  For example,  Europeans are aging
faster than pension funds are growing,  similar to the U.S. Retirement funds are
lower than they should be. So workers and employers are increasingly  turning to
financial service providers for help with retirement planning. At the same time,
foreign  stock markets are becoming  more  investor-friendly.  These trends help
explain the strong performance of the financial services sector, including Dutch
investment bank Kempen & Company and Newcourt Credit Group Inc., a Canadian firm
that provides financing to businesses for equipment and other assets.

    Besides  financial  services,  the fund was successful  with  investments in
Porsche and information  technology  service  companies like TT Tieto in Finland
and Parity PLC in the U.K. Porsche has seen a huge earnings  acceleration  after
introducing  the Boxster  sports  convertible  and  re-engineering  its assembly
platforms to produce cars more profitably.  TT Tieto installs,  builds and tests
computer  networks.  The Finnish government and the banking sector are among its
largest  clients.  Demand for TT Tieto's  products  is being  driven by Europe's
conversion to a single currency,  which will require vast new computer  systems.
The  need to help  computers  differentiate  the  year  2000  from  1900 is also
creating  demand  for  TT  Tieto's  products.  Parity  PLC  is  another  premier
information  technology services company whose product line addresses these same
markets.  Parity is experiencing  significant  demand from customers in the U.K.
and continental Europe.

WERE THERE ANY  DISAPPOINTMENTS IN EUROPE?

    MAID PLC (now called Dialog  Corp.) did not perform well.  Based in Britain,
MAID provides on-line database  services.  It acquired Knight Ridder Information
Services and has seen rapid growth, but the stock has not benefited. Industry


TOP TEN HOLDINGS                                % of fund investments
                                                As of             As of
                                               11/30/97          5/31/97

Marschollek, Lautenschlaeger
und Partner AG                                   2.8%             3.3%

Kempen & Company NV                              1.9%             1.7%

Newcourt Credit Group Inc.                       1.9%             1.6%

TT Tieto OY                                      1.9%             1.2%

Internatio-Muller NV                             1.8%             2.3%

Havas Advertising SA                             1.6%             1.1%

Corporacion Financiera
Reunida, S.A.                                    1.4%              -

Technomatix Technologies
Ltd. ADR                                         1.4%             1.2%

Porsche AG                                       1.4%             1.9%

Aalberts Industries N.V.                         1.3%             0.2%

See the Schedule of Investments for company nationalities and descriptions.


TOP FIVE INDUSTRIES
                                                % of fund investments

                                               As of             As of
                                              11/30/97          5/31/97

Financial Services                              12.5%            9.5%

Computer Software & Services                    12.5%            8.5%

Business Services & Supplies                    5.9%             7.3%

Machinery & Equipment                           5.5%             4.4%

Energy (Services)                               5.0%             2.5%


ANNUAL REPORT                               INTERNATIONAL DISCOVERY     15


                            INTERNATIONAL DISCOVERY

competition  cast doubt on the  sustainability  of MAID's profit  margins and we
exited  the  position.  Nera was  another  disappointment.  Nera is a  Norwegian
telecommunications  equipment  maker  whose stock fell after it  announced  poor
first quarter results.  This was due primarily to delayed deliveries in the data
transmission division. We sold the shares because the underlying earnings growth
was clearly weaker than expected and any earnings recovery based on our analysis
would be patchy at best.  There were more promising  ideas out there,  companies
with a more sustainable earnings outlook.

WHAT  CHANGES DID YOU MAKE TO THE  PORTFOLIO  DURING THE FINAL SIX MONTHS OF THE
YEAR?

    As  mentioned  earlier,  we  continued  to build our  holdings  in  European
companies at the expense of those in emerging  markets and Japan. We selectively
added to  existing  positions  and  established  new  holdings  in the  areas of
financial services, software and specialty chemicals. One of the largest changes
in our country  weightings  occurred in Canada,  where we  continued to discover
some exciting  opportunities in financial  services,  technology and energy. The
portfolio's holdings in Canada doubled to 10% during the final six months.

SIX MONTHS AGO, YOU WERE VERY  EXCITED  ABOUT THE  POTENTIAL  RETURNS OF FOREIGN
INVESTING. HAS THE TURMOIL IN SOUTHEAST ASIA CHANGED YOUR OUTLOOK?

    No, but we have to be a bit more cautious  because this crisis has developed
with such speed and intensity that it's  currently  difficult to predict when it
will end and what the full  implications  will be. We remain excited about newly
opened markets in Eastern  Europe,  which present  tremendous  opportunities  as
entrepreneurs  capitalize  on  a  well-educated,  but  underemployed  workforce.
Foreign companies are increasingly willing to focus on shareholder value as they
implement  far-reaching   restructurings,   consider  share  buy-backs,   reward
management  with stock  incentives  and generally  "get fit" for intense  global
competition.  These are all reasons to diversify  investments outside the United
States. We believe anyone stepping back from foreign  investments may be missing
the chance to participate in some of the most exciting growth  opportunities  in
the world.

[bar chart - data below]

INTERNATIONAL DISCOVERY'S INVESTMENTS BY COUNTRY

                      11/30/97           5/31/97
United Kingdom         13%                12%
Netherlands            12%                16%
Canada                 10%                5%
Switzerland             7%                8%
Sweden                  7%                7%
Germany                 6%                9%
Finland                 6%                4%
France                  6%                3%
Other                  33%*              36%

*No other country represented more than 6% of investments as of 11/30/97.


16     INTERNATIONAL DISCOVERY                AMERICAN CENTURY INVESTMENTS


<TABLE>
<CAPTION>
                            SCHEDULE OF INVESTMENTS
                            INTERNATIONAL DISCOVERY

NOVEMBER 30, 1997
Shares                                                                            Value
- ----------------------------------------------------------------------------------------------

COMMON STOCKS & WARRANTS

<S>                 <C>                                                 <C>
AUSTRIA--0.3%
                    16,100  Schoeller-Bleckmann Oilfield
                             Equipment AG(1)                                $    1,790,403
                                                                        -----------------------

                             (energy - services)

BRAZIL--0.9%

                19,173,287  Companhia de Saneamento Basico
                             do Estado de Sao Paulo                              4,458,890

                             (utilities)

                 4,209,000  Telecomunicacoes do Parana S.A.                      1,498,742
                                                                        -----------------------
                             (communications services)

                                                                                 5,957,632
                                                                        -----------------------

CANADA--9.6%

                   230,000  ATS Automation Tooling
                             Systems, Inc.(1)                                    7,640,552

                             (machinery and equipment)

                   287,000  Bell Canada International Inc.(1)                    4,161,500

                             (communications services)

                   450,000  Berkley Petroleum Corp.                              4,155,986

                             (energy - services)

                   800,000  Bracknell Corp.(1)                                   2,331,706

                             (business services and supplies)

                   177,000  CGI Group, Inc.(1)                                   4,972,434

                             (business services and supplies)

                   250,000  Cambridge Shopping Centres Ltd.
                             (Acquired 7/30/97 through 9/3/97,
                             Cost $2,471,321)(2)                                 2,660,041

                             (real estate)

                   110,000  Canadian Fracmaster Ltd.                             1,603,048

                             (energy - services)

                   339,200  Canadian Hotel Income Properties
                             REIT Installment Receipts                           2,286,982

                             (real estate)

                    40,000  Canadian Hotel REIT Warrants(1)                        251,431

                             (real estate)

                   208,000  JetForm Corp.(1)                                     3,198,000

                             (computer software and services)

                    95,000  Leitch Technology Corp.(1)                           2,502,019

                             (electrical and electronic components)

                   370,000  Newcourt Credit Group Inc.                          11,680,655

                             (financial services)


Shares                                                                            Value
- ----------------------------------------------------------------------------------------------

                   125,000  Remington Energy Ltd.(1)                        $    2,089,406

                             (energy - production and marketing)

                   250,000  Royal Group Technologies Ltd.(1)                     6,022,404

                             (building and home improvements)

                   200,000  Shermag, Inc.(1)                                     2,387,892

                             (furniture and furnishings)

                   440,000  Westaim Corporation (The)(1)                         2,425,817
                                                                        -----------------------
                             (chemicals and resins)

                                                                                60,369,873
                                                                        -----------------------

DENMARK--2.7%

                    15,540  Christian Hansen Holding A/S Cl B                    1,770,459

                             (pharmaceuticals)

                    27,900  Jyske Bank A/S                                       2,947,560

                             (banking)

                   100,000  Sondagsavisen A/S                                    4,467,809

                             (printing and publishing)

                   140,000  Sydbank A/S                                          7,505,920
                                                                        -----------------------
                             (banking)

                                                                                16,691,748
                                                                        -----------------------

EGYPT--0.4%

                    30,000  Egypt International Pharmaceuticals                  2,046,758

                             (pharmaceuticals)

                    17,090  HELWAN FOR CEMENT                                      332,955
                                                                        -----------------------
                             (building and home improvements)

                                                                                 2,379,713
                                                                        -----------------------

ESTONIA--0.4%

                   309,400  Hansabank Ltd.                                       2,356,184
                                                                        -----------------------
                             (banking)

FINLAND--6.4%

                   243,385  Asko Oyj Cl A                                        4,656,470

                             (diversified company)

                   104,488  Elcoteq Network Corp. Cl A(1)                        1,391,514

                             (electrical and electronic components)

                    20,000  Finnlines OY                                           795,296

                             (transportation)

                    35,000  Fiskars Oyj AB Cl A                                  3,758,429

                             (diversified company)

                    48,000  OY Hartwall AB                                       3,997,486

                             (food and beverage)

                   355,000  Partek Oyj Abp                                       6,585,480

                             (industrial)

See Notes to Financial Statements


ANNUAL REPORT                               INTERNATIONAL DISCOVERY    17


                            SCHEDULE OF INVESTMENTS
                            INTERNATIONAL DISCOVERY

NOVEMBER 30, 1997

Shares                                                                            Value
- ----------------------------------------------------------------------------------------------

                   205,000  Pohjola Insurance Group Cl B                    $    7,690,360

                             (insurance)

                   110,000  TT Tieto OY                                         11,657,460
                                                                        -----------------------
                             (computer software and services)

                                                                                40,532,495
                                                                        -----------------------

FRANCE--5.5%

                    89,000  Bertrand Faure SA                                    6,060,678

                             (automobiles and auto parts)

                   220,000  Companie Generale de Geophysique
                             SA ADR(1)                                           4,757,500

                             (energy - services)

                    11,536  Galeries Lafayette                                   5,002,653

                             (retail - general merchandise)

                    81,742  Havas Advertising SA                                10,177,421

                             (broadcasting and media)

                    10,904  LVL Medical                                          1,123,038

                             (medical equipment and supplies)

                     8,000  Labinal SA                                           2,013,789

                             (aerospace and defense)

                    93,458  Vallourec SA                                         5,647,090
                                                                        -----------------------
                             (steel)

                                                                                34,782,169
                                                                        -----------------------

GERMANY--1.4%

                     9,200  BETA Systems Software AG                               881,656

                             (computer software and services)

                    50,000  DIS Deutscher Industrie Service AG(1)                1,984,690

                             (business services and supplies)

                   195,100  Pfeiffer Vacuum Technology
                             AG ADR(1)                                           5,755,450
                                                                        -----------------------
                             (industrial equipment
                             and machinery)

                                                                                 8,621,796
                                                                        -----------------------

HONG KONG--1.6%

                   952,000  Beijing Enterprises Holdings
                             Limited(1)                                          2,506,138

                             (diversified company)

                 2,700,000  Founder Hong Kong Limited                            2,095,650

                             (computer software and services)

                 1,370,000  Guangdong Kelon Elec Holding                         1,524,132

                             (consumer products)


Shares                                                                            Value
- ----------------------------------------------------------------------------------------------

                 6,542,000  Guangzhou Investments Company Ltd.              $    1,277,883

                             (diversified company)

                 2,667,000  Peregrine Investments Holdings
                             Limited                                             2,622,046
                                                                        -----------------------
                             (financial services)

                                                                                10,025,849
                                                                        -----------------------

HUNGARY--1.3%

                    45,805  Danubius Hotel and Spa Rt.(1)                        1,375,653

                             (leisure)

                    45,347  Pannonplast Rt.                                      1,874,172

                             (chemicals and resins)

                    50,000  Richter Gedeon Rt.                                   4,721,589
                                                                        -----------------------
                             (pharmaceuticals)

                                                                                 7,971,414
                                                                        -----------------------

INDIA--0.4%

                     1,000  Gujarat Ambuja Cements Ltd.                              6,914

                             (building and home improvements)

                       550  Indian Hotels Company Limited                            8,704

                             (leisure)

                     8,000  Larsen & Toubro Ltd.                                    38,453

                             (diversified company)

                    17,600  Mahindra & Mahindra Ltd.                               152,639

                             (automobiles and auto parts)

                   130,000  NIIT Limited                                         2,138,466

                             (computer software and services)

                       200  Oriental Bank of Commerce                                  271
                                                                        -----------------------
                             (banking)

                                                                                 2,345,447
                                                                        -----------------------

IRELAND--0.7%

                   163,000  Ryanair Holdings plc ADR(1)                          4,329,688
                                                                        -----------------------
                             (airlines)

ISRAEL--4.6%

                   190,000  Crystal Systems Solutions(1)                         3,716,875

                             (computer software and services)

                   150,000  Formula Systems (1985) Ltd.(1)                       4,958,327

                             (computer software and services)

                    84,200  MEMCO Software Ltd.(1)                               1,926,075

                             (computer software and services)

                   200,000  Orckit Communications Ltd.(1)                        4,118,750

                             (communications equipment)

                   610,000  Oshap Technologies, Ltd.(1)                          5,318,438

                             (computer software and services)

See Notes to Financial Statements


18      INTERNATIONAL DISCOVERY                AMERICAN CENTURY INVESTMENT


                            SCHEDULE OF INVESTMENTS
                            INTERNATIONAL DISCOVERY

NOVEMBER 30, 1997

Shares                                                                            Value
- ----------------------------------------------------------------------------------------------

                   270,500  Technomatix Technologies Ltd.(1)                $    8,808,156
                                                                        -----------------------
                             (computer software and services)

                                                                                28,846,621
                                                                        -----------------------

ITALY--1.7%

                 1,100,000  Banca Popolare di Brescia                            8,277,571

                             (banking)

                   300,000  Simint S.p.A.(1)                                     2,248,836
                                                                        -----------------------
                             (textiles and apparel)

                                                                                10,526,407
                                                                        -----------------------

JAPAN--1.8%

                    15,000  Bellsystem 24, Inc.                                  1,798,237

                             (business services and supplies)

                    54,000  Diamond Computer Service Co.                           833,536

                             (computer software and services)

                    16,000  Fuji Soft ABC, Inc.                                    559,138

                             (computer software and services)

                    50,000  Meitec                                               1,547,502

                             (computer software and services)

                    69,800  Ministop Co., Ltd.                                   1,799,350

                             (retail - food and drug)

                       175  Net One Systems Co., Ltd.(1)                           588,066

                             (computer software and services)

                    43,000  Nichii Gakkan Company                                1,398,237

                             (healthcare)

                   113,000  Nippon System Development                            2,346,327

                             (computer software and services)

                    94,000  Shindengen Electric Manufacturing                      725,485
                                                                        -----------------------
                             (electrical and electronic components)

                                                                                11,595,878
                                                                        -----------------------

LITHUANIA--0.4%

                    38,900  Vilniaus Bankas AB GDR                               2,431,250
                                                                        -----------------------
                             (banking)

MEXICO--1.6%

                   337,000  ARA, S.A. de C.V.(1)                                 1,477,080

                             (construction and property
                             development)

                   400,000  Corporacion Interamericana de
                             Entretenimiento S.A.(1)                             2,736,957

                             (leisure)

                 1,116,000  Grupo Financiero Banorte S.A. de C.V.                1,548,962

                             (financial services)


Shares                                                                            Value
- ----------------------------------------------------------------------------------------------

                   287,100  Grupo Radio Centro S.A. de
                             C.V. ADR                                       $    4,270,613
                                                                        -----------------------
                             (broadcasting and media)

                                                                                10,033,612
                                                                        -----------------------

NETHERLANDS--12.5%

                   333,000  Aalberts Industries N.V.                             8,461,132

                             (metals and mining)

                    23,000  Athlon Groep N.V.                                    1,967,296

                             (automobiles and auto parts)

                   172,136  Draka Holding N.V.                                   7,664,924

                             (electrical and electronic components)

                   150,000  Fugro N.V.                                           5,132,075

                             (business services and supplies)

                   100,000  IHC Caland N.V.                                      5,328,302

                             (energy - services)

                   374,500  Internatio-Muller NV                                11,512,931

                             (transportation)

                   300,837  Kempen & Company NV                                 11,882,115

                             (financial services)

                   178,194  Nagron Nationaal Grondbezit N.V.                     4,213,896

                             (construction and property
                             development)

                    68,500  Nedcon Groep NV                                      3,601,635

                             (machinery and equipment)

                   305,600  Ordina Beheer N.V.                                   4,612,830

                             (computer software and services)

                    40,000  Simac Techniek N.V.                                  4,558,490

                             (computer software and services)

                   221,000  Smit Internationale NV                               6,282,516

                             (transportation)

                   140,000  Unique International NV                              3,014,843
                                                                        -----------------------
                             (business services and supplies)

                                                                                78,232,985
                                                                        -----------------------

NORWAY--1.7%

                    71,076  Det Sondenfjelds-Norske
                             Dampskibsselskab Cl A                               1,393,570

                             (energy - services)

                   112,950  Fred Olsen Energy ASA(1)                             2,403,058

                             (energy - services)

                   150,000  Seateam Technology AS                                2,659,426

                             (energy - services)

                   170,000  Tomra Systems ASA                                    4,373,279
                                                                        -----------------------
                             (environmental services)

                                                                                10,829,333
                                                                        -----------------------

See Notes to Financial Statements


ANNUAL REPORT                               INTERNATIONAL DISCOVERY   19


                            SCHEDULE OF INVESTMENTS
                            INTERNATIONAL DISCOVERY

NOVEMBER 30, 1997

Shares                                                                            Value
- ----------------------------------------------------------------------------------------------

PORTUGAL--1.3%

                   300,000  Companhia de Seguros Mundial
                             Confianca, SA(1)                               $    5,019,423

                             (insurance)

                    34,000  Telecel-Comunicacaoes

                             Pessoais, SA(1)                                     3,113,207
                                                                        -----------------------
                             (communications services)

                                                                                 8,132,630
                                                                        -----------------------

RUSSIAN FEDERATION--1.1%

                    11,100  AO Tatneft ADR                                       1,404,150

                             (energy - services)

                    13,900  AO Tatneft ADR (Acquired
                              8/11/97 through 9/11/97,
                              Cost $2,044,150)(2)                                1,758,350

                             (energy - services)

                   100,000  Irkutskenergo ADR                                    1,047,500

                             (utilities)

                    55,900  Trade House GUM ADR                                    440,213

                             (retail - general merchandise)

                    74,300  Vimpel-Communications ADR(1)                         2,266,150
                                                                        -----------------------
                             (communications services)

                                                                                 6,916,363
                                                                        -----------------------

SOUTH AFRICA--1.7%

                   858,268  Dimension Data Holdings Ltd.(1)                      3,709,710

                             (computer systems)

                   358,600  Ellerine Holdings Limited                            2,494,737

                             (retail - general merchandise)

                    68,500  Investec Holdings Limited                            2,695,729

                             (financial services)

                 1,814,800  Metro Cash & Carry Limited                           1,699,566
                                                                        -----------------------
                             (retail - food and drug)

                                                                                10,599,742
                                                                        -----------------------

SPAIN--2.6%

                 1,700,000  Corporacion Financiera
                             Reunida, S.A.(1)                                    9,007,982

                             (financial services)

                    42,836  Grupo Acciona SA                                     7,585,152
                                                                        -----------------------
                             (construction and property
                             development)

                                                                                16,593,134
                                                                        -----------------------

SWEDEN--6.7%

                   275,000  BT Industries AB                                     5,270,997

                             (machinery and equipment)


Shares                                                                            Value
- ----------------------------------------------------------------------------------------------

                   600,000  Castellum AB                                    $    5,633,620

                             (real estate)
                   250,000  Hagstromer & Qviberg AG                              2,638,736

                             (financial services)

                   110,000  Hexagon AB                                           3,134,106

                             (diversified company)

                   230,000  Industri-Matematik International Corp.(1)            6,253,125

                             (computer software and services)

                   100,000  Nolato AB Cl B                                       3,147,057

                              (rubber and plastics)

                   211,700  OM Gruppen AB                                        7,978,333

                             (financial services)

                   110,000  Ortivus AB Cl B                                      3,946,124

                             (medical equipment and supplies)

                   155,000  Spectra-Physics AB                                   3,944,506
                                                                        -----------------------
                             (medical equipment and supplies)

                                                                                41,946,604
                                                                        -----------------------

SWITZERLAND--7.1%

                     5,000  Georg Fischer AG                                     6,871,888

                             (automobiles and auto parts)

                     1,500  Gurit-Heberlein AG                                   4,712,152

                             (chemicals and resins)

                     1,600  Moevenpick Holding AG Bearer                           611,458

                             (leisure)

                    15,000  Rieter Holdings Ltd.                                 6,542,318

                             (machinery and equipment)

                     5,000  Siegfried AG                                         6,556,342

                             (chemicals and resins)

                   105,000  Swisslog Holding AG                                  8,043,791

                             (machinery and equipment)

                     2,000  Verwaltungs-und Privat-Bank AG                       3,513,078

                             (banking)

                    10,500  Vontobel Holding AG Cl B                             7,951,757
                                                                        -----------------------
                             (financial services)

                                                                                44,802,784
                                                                        -----------------------

UNITED KINGDOM--12.6%

                 1,200,000  Ashtead Group plc                                    3,465,623

                             (industrial equipment and machinery)

                   497,033  Bodycote International plc                           7,995,657

                             (diversified company)

                 1,372,000  Britax International plc                             2,861,706

                             (automobiles and auto parts)

                   255,000  Close Brothers Group plc                             2,121,047

                             (financial services)

See Notes to Financial Statements


20      INTERNATIONAL DISCOVERY                AMERICAN CENTURY INVESTMENT


                            SCHEDULE OF INVESTMENTS
                            INTERNATIONAL DISCOVERY

NOVEMBER 30, 1997

Shares                                                                            Value
- ----------------------------------------------------------------------------------------------

                   516,000  Cobham PLC                                      $    6,936,920

                             (aerospace and defense)

                   409,300  Expro International Group plc                        4,068,105

                             (energy - services)

                   491,000  Filtronic Comtek plc                                 3,499,435

                             (communications equipment)

                   370,000  Goode Durrant plc                                    3,080,723

                             (business services and supplies)

                 1,350,000  Guinness Peat Group plc                                682,964

                             (financial services)

                   310,000  JBA Holdings Plc                                     5,130,878

                             (computer software and services)

                 1,125,000  J.D. Wetherspoon plc                                 5,852,039

                             (food and beverage)

                   157,000  More Group plc                                       1,966,141

                             (broadcasting and media)

                   596,250  Parity plc                                           6,303,861

                             (business services and supplies)

                   417,500  PizzaExpress plc                                     5,919,447

                             (restaurants)

                   400,100  Powerscreen International plc                        4,449,675

                             (industrial equipment and
                             machinery)

                   302,237  Robert Walters plc                                   2,074,971

                             (business services and supplies)

                   380,000  Sage Group plc (The)                                 4,887,170

                             (computer software and services)

                   621,000  Select Appointments Holdings plc                     6,083,080

                             (business services and supplies)

                   100,000  Virgin Express Holdings plc ADR(1)                   1,662,500
                                                                        -----------------------
                             (airlines)

                                                                                79,041,942
                                                                        -----------------------

UNITED STATES--0.6%

                   168,500  Viatel, Inc.(1)                                      1,074,188

                             (communications services)

                   145,000  Zoran Corporation(1)                                 2,474,062
                                                                        -----------------------
                             (computer software and services)

                                                                                 3,548,250
                                                                        -----------------------

TOTAL COMMON STOCKS
& WARRANTS--89.6%                                                              562,231,946
                                                                        -----------------------
   (Cost $483,724,149)



Shares                                                                            Value
- ----------------------------------------------------------------------------------------------

 PREFERRED STOCKS

BRAZIL--0.5%

               94,800,000  Ericsson Telecomunicacoes S.A.                  $     3,290,183

                             (communications equipment)

                   53,427  Rio Grand de Telecom Cl A(1)                             66,634

                             (communications equipment)

                4,100,000  Telecomunicacoes do Parana
                             S.A. Rights(1)                                             --
                                                                        -----------------------
                             (communications services)

                                                                                 3,356,817
                                                                        -----------------------

GERMANY--5.2%

                   13,000  KSB AG                                                3,214,063

                             (machinery and equipment)

                   72,000  Marschollek, Lautenschlaeger
                             und Partner AG                                     17,800,964

                             (financial services)

                    5,600  Porsche AG                                            8,700,879

                             (automobiles and auto parts)

                   10,000  Sartorius AG                                          2,778,565
                                                                        -----------------------
                             (electrical and electronic components)

                                                                                32,494,471
                                                                        -----------------------

TOTAL PREFERRED STOCKS--5.7%                                                    35,851,288
                                                                        -----------------------
   (Cost $19,498,606)



TEMPORARY CASH INVESTMENTS--4.7%

    Repurchase Agreement, Merrill Lynch & Co. Inc.,
        5.70%, due 12/1/97, collateralized by
        $29,235,000 par value U.S. Treasury Notes,
        5.125%, due 6/30/98

              (Delivery value $29,213,870)                                      29,200,000
                                                                        -----------------------

   (Cost $29,200,000)

TOTAL INVESTMENT SECURITIES--100.0%                                           $627,283,234
                                                                        =======================
   (Cost $532,422,755)
</TABLE>

See Notes to Financial Statements


ANNUAL REPORT                               INTERNATIONAL DISCOVERY       21


                            SCHEDULE OF INVESTMENTS
                            INTERNATIONAL DISCOVERY

NOVEMBER 30, 1997

FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS

           Contracts             Settlement                         Unrealized
            to Sell                Dates                Value       Gain(Loss)
- --------------------------------------------------------------------------------

         9,346,514  CHF            1/28/98            $6,642,867      $45,708

        10,315,388  DEM            1/28/98             5,890,502       39,382

        32,287,884  FRF            1/28/98             5,510,433       43,421

         6,819,478  GBP            1/28/98            11,454,541      (19,299)

       363,554,371  JPY            1/28/98             2,902,960      (22,836)

        23,277,527  NLG            1/28/98            11,798,814       77,838

        46,449,236  SEK            1/28/98             6,040,323       83,828
                                                     -----------     --------
                                                     $50,240,440     $248,042
                                                     ===========     ========
 (Value on Settlement Date $50,488,482)

NOTES TO SCHEDULES OF INVESTMENTS

ADR = American Depositary Receipt

CHF = Swiss Franc

DEM = German Mark

FRF = French Franc

GBP = British Pound

GDR = Global Depositary Receipt

JPY = Japanese Yen

NLG = Netherlands Guilder

SEK = Swedish Krona

(1)   Non-income producing.

(2)   Security was purchased  under Rule 144A of the Securities Act of 1933 and,
      unless registered under the Act or exempted from registration, may only be
      sold  to  qualified  institutional   investors.  The  aggregate  value  of
      restricted  securities  at  November  30,  1997,  was  $4,418,391,   which
      represented 0.7% of net assets.

See Notes to Financial Statements


22      INTERNATIONAL DISCOVERY                AMERICAN CENTURY INVESTMENTS


                               EMERGING MARKETS

                                                                 LIFE OF FUND(2)
TOTAL RETURNS AS OF
NOVEMBER 30, 1997(1)

Emerging Markets .................................................   -17.00%

MSCI Emerging Markets
Free Index .......................................................   -19.60%

(1) Not annualized.

(2) The fund's inception was 9/30/97.


See  pages  48 and 49 for more  information  about  the  comparative  index  and
returns.


PORTFOLIO AT A GLANCE
                          11/30/97
Number of Companies          113
Portfolio Turnover         36%(1)
Expense Ratio               2.00%

(1) From inception date 9/30/97


[line graph - data below]

GROWTH OF $10,000 OVER LIFE OF FUND

VALUE ON 11/30/97
International Emerging Markets                     $8,300
MSCI Emerging Markets Free Index                   $9,137

            International Emerging Markets     MSCI Emerging Markets Free Index
DATE           ACCT VALUE         RETURN           ACCT VALUE     RETURN
9/30/97           $10,000                          $10,000
10/31/97           $8,480        -15.20%            $9,231        -7.69%
11/30/97           $8,300        -17.00%            $9,137        -8.63%

$10,000 investment made 9/30/97

Past  performance  does not  guarantee  future  results.  Investment  return and
principal  value will fluctuate,  and redemption  value may be more or less than
original cost.

The line representing Emerging Market's total return includes operating expenses
(such as transaction  costs and management fees) that reduce returns,  while the
total return line of the MSCI Emerging Markets Free Index does not.


ANNUAL REPORT                                      EMERGING MARKETS       23


                               EMERGING MARKETS

MANAGEMENT Q & A

    An interview with Mark Kopinski and Michael Donnelly,  portfolio managers on
the Emerging Markets fund.

EMERGING  MARKETS  OPENED ON SEPTEMBER 30, 1997.  HOW DID IT PERFORM  DURING ITS
FIRST TWO MONTHS?

    Many emerging  markets were in disarray  when the fund opened.  The economic
and currency crises of Southeast Asia were reverberating  through the markets of
Brazil,  Poland and  Russia,  among  others.  It was a tough  environment.  As a
result, returns were negative during the first two months,  September 30 through
November 30. Emerging Markets posted a -17.00% total return.  However,  we still
beat our  benchmark,  the Morgan  Stanley  Emerging  Markets  Free Index,  which
declined  19.60%.  We fared  better than the Index  because we had fewer  assets
invested in Asia. The Index  represents the performance of stocks in 26 emerging
market countries in the Pacific Basin, Europe, and Latin America.

    We would have  liked to  welcome  new  investors  into the fund with  better
results,  but we were caught in a broad market downturn that has not yet run its
course.

GIVEN THE TOUGH ENVIRONMENT, WHAT'S YOUR INVESTMENT  STRATEGY?

    We  believe  the  current   declines  will  produce  some  very   attractive
opportunities  over the  intermediate  and long term. Our overall strategy is to
buy  individual  companies  based on their  business  fundamentals  and earnings
growth.  We intend to use the current  market  volatility as an ally to add good
stock ideas to the portfolio at substantially  lower prices than we could have a
year or even a few months ago. There are many excellent companies that have been
swept up in macro concerns over currency and market stability. We're focusing on
those that are positioned for a rebound when the clouds clear.

HOW MUCH  WEIGHT DO YOU GIVE TO THE  POLITICAL  AND  ECONOMIC  STABILITY  OF THE
COUNTRIES IN WHICH YOUR COMPANIES ARE LOCATED?

    We watch this very closely.  If the political or economic risk is too great,
even the best stocks will have trouble performing.  From a political standpoint,
it is important  that the leaders of the countries  where we invest have a solid
base of local  support.  Economically,  it is important that they pursue liberal
economic policies that promote long-term stability. We are looking for countries
that have low deficits  and a robust  export  effort.  If a country is importing
more  than it  exports--if  it is  running  what is  called  a  current  account
deficit--then  the deficit  should not be too large  relative  to the  country's
gross  domestic  product  (the sum of all the goods  and  services  the  country
produces).  We also want to see  anti-inflationary  policies,  lower barriers to
trade and, most importantly,  a general reduction of governmental involvement in
the  economy.  Such  policies  will  support  economic  stability  and, in turn,
political stability.


TOP TEN HOLDINGS                                        % of fund investments
                                                                  As of
                                                                11/30/97
Ericsson Telecomunicacoes S.A.                                    2.2%

Portugal Telecom SA                                               1.7%

Telecom Argentina STET -
France Telecom S.A. Cl B ADR                                      1.6%

Corporacion Interamericana
de Entretenimiento S.A.                                           1.5%

Telecomunicacoes Brasileiras S.A. ADR                             1.5%

Telefonos de Mexico, S.A. ADR                                     1.4%

OY Hartwall AB                                                    1.4%

YPF Sociedad Anonima ADR                                          1.4%

Nokian Renkaat Oyj                                                1.3%

Danubius Hotel and Spa Rt.                                        1.3%

See the Schedule of Investments for company nationalities and descriptions.


TOP FIVE INDUSTRIES
                                                          % of fund investments

                                                                  As of
                                                                11/30/97

Communications Services                                           14.7%

Utilities                                                         11.6%

Food & Beverage                                                   8.2%

Banking                                                           5.7%

Energy (Production & Marketing)                                   5.4%


24     EMERGING MARKETS                       AMERICAN CENTURY INVESTMENTS


                               EMERGING MARKETS

WHAT TYPES OF COMPANIES DO YOU FIND ATTRACTIVE IN THIS ENVIRONMENT?

    With so many foreign  currencies  turning down,  we're looking for companies
with a healthy  export  business that sell goods to developed  economies.  These
corporations tend to benefit if their local currency is devalued. For example, a
Mexican company that is getting paid in U.S.  dollars fares better than one paid
in pesos if the value of the peso drops.

CAN YOU GIVE US A SPECIFIC EXAMPLE?

    Yes, Sedna  Geotech.  Sedna is listed on the Canadian stock exchange but its
operations are primarily in Peru. The company rents drilling  equipment for hard
mineral mines, such as copper,  iron ore and zinc.  Revenues are in U.S. dollars
because most of its products are exported to developed countries,  but costs for
the most part are denominated in local currencies. This mix is a growing benefit
to the company and,  especially in times of currency  volitility,  has defensive
characteristics.  Sedna led the list of the fund's top-performing stocks for the
period.

WHAT ARE SOME OF THE OTHER OPPORTUNITIES YOU SEE OUT THERE?

    Two Brazilian  companies,  CEMIG and SABESP,  illustrate some other types of
ideas we like.  They were also among the fund's better  performers.  CEMIG is an
integrated electric utility that is being privatized.  The Brazilian  government
used to own the company,  but it has been  selling  shares to the public and has
decided to cut back its ownership to 50%. CEMIG is  streamlining  operations and
improving bottom line growth.  Two U.S. energy  companies  recently bought a 33%
stake and are leading the  restructuring  effort.  CEMIG also  benefits from the
strong  growth in  industrial  production  in its  franchise  area.  SABESP is a
similar story. It is a water utility that is undergoing  fundamental  changes to
improve  profitability and cut losses.  SABESP is making such basic improvements
as fixing leaky pipes.  Like CEMIG,  government  ownership is decreasing,  which
should increase the company's efficiency and help improve earnings growth.

WHAT STOCKS OR SECTORS HURT FUND PERFORMANCE?

    The financial  services  industry was weak. This sector suffered globally in
the wake of the currency  devaluation in Southeast Asia. Many emerging countries
raised interest rates dramatically to protect their own currencies. Higher rates
slow banks' earnings growth because loan volumes drop when the cost of borrowing
goes up.  Grupo  Financiero  Banorte in  Mexico,  Banco  Bradesco  in Brazil and
Hansapank  in  Estonia  were all hard hit.  These are good  companies  with real
potential,  but they will find it  difficult to grow their  earnings  under such
adverse economic conditions.

GOING FORWARD, WHAT'S YOUR OUTLOOK FOR  EMERGING MARKETS?

    Like other mutual funds, emerging market funds should be viewed as long-term
opportunities  to build  capital.  Two months is not enough  time to give a true
indication of how any fund or any marketplace  will perform.  We believe this is
absolutely a good time to gain  exposure to emerging  markets as the  structural
adjustments in their  economies make companies more  competitive and profitable.
We also believe the trends of privatization and improving business fundamentals,
combined with the increasing  popularity of stock  investments and Western-style
capitalism,  bode well for long-term price  appreciation in many emerging market
stocks.

[bar chart - data below]

EMERGING MARKET'S INVESTMENTS BY COUNTRY

                 11/30/97
Brazil            12%
Mexico            7%
Portugal          6%
Argentina         6%
Hong Kong         5%
Hungary           5%
South Africa      5%
Israel            4%
Other            50%*

*No other emerging market country  represented more than 4% of investments as of
11/30/97.


ANNUAL REPORT                                      EMERGING MARKETS       25


<TABLE>
<CAPTION>
                            SCHEDULE OF INVESTMENTS
                               EMERGING MARKETS

NOVEMBER 30, 1997
Shares                                                                               Value
- ----------------------------------------------------------------------------------------------

COMMON STOCKS & WARRANTS

<S>                 <C>                                                         <C>
ARGENTINA--5.5%

                     4,000  Banco de Galicia y Buenos Aires
                             S.A. de C.V. ADR                                   $     93,375

                             (banking)

                    20,000  CEI Citicorp Holdings S.A.                                80,029

                             (banking)

                    40,000  Central Costanera S.A. Cl B                              104,038

                             (utilities)

                     5,300  S.A. Importadora y Exportadora
                             Patagonia Cl B                                           77,408

                             (retail - food and drug)

                     7,000  Telecom Argentina STET - France
                             Telecom S.A. Cl B ADR                                   214,813

                             (communications services)

                     5,500  YPF Sociedad Anonima ADR                                 184,594
                                                                         ------------------------
                             (energy - production and marketing)

                                                                                     754,257
                                                                         ------------------------

BOTSWANA--0.7%

                    95,000  Sechaba Breweries Ltd.(1)                                101,478
                                                                         ------------------------
                             (food and beverage)

BRAZIL--1.9%

                   620,000  Companhia de Saneamento Basico
                             do Estado de Sao Paulo                                  144,199

                             (utilities)

                   400,000  Light Participacoes S.A.                                 109,979
                                                                         ------------------------
                             (utilities)

                                                                                     254,178
                                                                         ------------------------

CANADA--3.2%

                    10,000  Bell Canada International Inc.(1)                        145,000

                             (communications services)

                    40,997  Sedna Geotech, Inc.(1)                                    79,181

                             (metals and mining)

                    58,594  Sedna Geotech, Inc. Special
                             Warrants(1)                                             113,167

                             (metals and mining)

                     9,000  YBM Magnex International Inc.(1)                          97,658
                                                                         ------------------------
                             (steel)

                                                                                     435,006
                                                                         ------------------------


Shares                                                                               Value
- --------------------------------------------------------------------------------------------------

CHILE--2.3%

                     4,000  Compania Cervecerias
                             Unidas S.A. ADR                                    $    107,250

                             (food and beverage)

                     4,500  Embotelladora Andina S.A. ADR                            105,469

                             (food and beverage)

                     4,000  Vina Concha Y Toro S.A. ADR                              100,500
                                                                         ------------------------
                             (food and beverage)

                                                                                     313,219
                                                                         ------------------------

CZECH REPUBLIC--3.9%

                     4,700  Czeske energeticke zavody a.s.(1)                        138,644

                             (utilities)

                       900  Prazska Energetika a.s.(1)                                49,626

                             (utilities)

                     1,200  SPT Telecom a.s.(1)                                      126,349

                             (communications services)

                       968  Stredoceska Energetika a.s.(1)                            47,451

                             (utilities)

                    40,000  Unipetrol a.s.(1)                                        116,545

                             (energy - production and marketing)

                       905  Vychodoceska Energetika (VCE)(1)                          53,734
                                                                         ------------------------
                             (utilities)

                                                                                     532,349
                                                                         ------------------------

EGYPT--2.1%

                     1,725  A-Ahram Beverages Co. S.A.E.(1)                           98,351

                             (food and beverage)

                     1,700  Egyptian Financial & Industrial(1)                        96,986

                             (financial services)

                     5,000  HELWAN FOR CEMENT                                         97,412
                                                                         ------------------------
                             (building and home improvements)

                                                                                     292,749
                                                                         ------------------------

FINLAND--3.0%

                     2,612  Elcoteq Network Corp. Cl A(1)                             34,785

                             (electrical and electronic
                             components)

                     6,100  Nokian Renkaat Oyj                                       177,347

                             (rubber and plastics)

                     2,300  OY Hartwall AB                                           191,546
                                                                         ------------------------
                             (food and beverage)

                                                                                     403,678
                                                                         ------------------------

See Notes to Financial Statements


26      EMERGING MARKETS                       AMERICAN CENTURY INVESTMENTS


                            SCHEDULE OF INVESTMENTS
                               EMERGING MARKETS

NOVEMBER 30, 1997

Shares                                                                               Value
- --------------------------------------------------------------------------------------------------

GREECE--1.9%

                    10,000  Athens Medical Care S.A.                            $    129,948

                             (healthcare)

                     5,400  Hellenic Bottling Company SA                             127,265
                                                                         ------------------------
                             (food and beverage)

                                                                                     257,213
                                                                         ------------------------

HONG KONG--5.4%

                   200,000  Beijing Datang Power Generation
                             Company Ltd. (Acquired 11/4/97
                             through 11/20/97, Cost
                             $102,778)(1)(2)                                          92,493

                             (utilities)

                    34,000  Beijing Enterprises Holdings
                             Limited(1)                                               89,505

                             (diversified company)

                   130,000  Founder Hong Kong Limited                                100,902

                             (computer software and services)

                    30,000  Guangdong Kelon Elec Holding                              33,375

                             (consumer products)

                     4,400  HSBC Holdings plc                                        106,154

                             (banking)

                    50,000  Hong Kong and China Gas
                             Company Ltd.                                             89,906

                             (utilities)

                   110,000  Lippo China Resources Ltd.                                22,198

                             (real estate)

                     5,000  Peak International Ltd.(1)                               110,313

                             (packaging and containers)

                   100,000  Peregrine Investments Holdings
                             Limited                                                  98,314
                                                                         ------------------------
                             (financial services)

                                                                                     743,160
                                                                         ------------------------

HUNGARY--4.7%

                     5,900  Danubius Hotel and Spa Rt.(1)                            177,194

                             (leisure)

                     6,000  Magyar Tavkozlesi Rt. ADR(1)                             121,500

                             (communications services)

                     6,000  Mezogazdasagi Gepgyarto
                             Reszvenytarsasag(1)                                     135,260

                             (automobiles and auto parts)

                     2,400  Pannonplast Rt.                                           99,191

                             (chemicals and resins)

Shares                                                                               Value
- --------------------------------------------------------------------------------------------------

                     1,200  Richter Gedeon Rt.                                   $   113,318
                                                                         ------------------------
                             (pharmaceuticals)

                                                                                     646,463
                                                                         ------------------------

INDONESIA--3.2%

                     5,000  Gulf Indonesia Resources Ltd.(1)                         112,813

                             (energy - production and
                             marketing)

                    29,800  PT Gudang Garam                                           63,317

                             (tobacco)

                   300,000  PT Indah Kiat Pulp & Paper
                             Corporation Tbk                                          69,911

                             (paper and forest products)

                    50,000  PT Indosat                                               113,434

                             (communications services)

                    80,000  PT Medco Energi Corporation                               82,248
                                                                         ------------------------
                             (energy - production and
                             marketing)

                                                                                     441,723
                                                                         ------------------------

ISRAEL--4.0%

                     2,000  ECI Telecommunications Limited                            54,625

                             (communications equipment)

                     4,000  Formula Systems (1985) Ltd.(1)                           132,222

                             (computer software and services)

                     2,500  MEMCO Software Ltd.(1)                                    57,188

                             (computer software and services)

                     3,500  Orckit Communications Ltd.(1)                             72,078

                             (communications equipment)

                    12,000  Oshap Technologies, Ltd.(1)                              104,625

                             (computer software and services)

                     4,000  Technomatix Technologies
                             Ltd. ADR(1)                                             130,250
                                                                         ------------------------
                             (computer software and services)

                                                                                     550,988
                                                                         ------------------------

JORDAN--0.8%

                    25,000  Jordan Cement Factory                                    109,270
                                                                         ------------------------
                             (building and home improvements)

LITHUANIA--0.5%

           1,100  Vilniaus Bankas AB GDR

                             (banking)                                                68,750
                                                                         ------------------------

See Notes to Financial Statements


ANNUAL REPORT                                      EMERGING MARKETS    27


                            SCHEDULE OF INVESTMENTS
                               EMERGING MARKETS

NOVEMBER 30, 1997

Shares                                                                               Value
- --------------------------------------------------------------------------------------------------

MEXICO--6.9%
                    32,000  ARA, S.A. de C.V.(1)                                $    140,257

                             (construction and property
                             development)

                    30,000  Corporacion Interamericana de
                             Entretenimiento S.A.(1)                                 205,272

                             (leisure)

                    17,000  Desc S.A. de C.V. Cl B                                   160,406

                             (chemicals and resins)

                     4,600  Grupo Elektra, S.A. de C.V. GDR                          142,600

                             (retail - general merchandise)

                    30,000  Grupo Financiero Banorte
                             S.A. de C.V.                                             41,639

                             (financial services)

                     1,500  Panamerican Beverages Inc. Cl A                           51,375

                             (food and beverage)

                     4,000  Telefonos de Mexico, S.A. ADR                            198,000
                                                                         ------------------------
                             (communications services)

                                                                                     939,549
                                                                         ------------------------

PERU--1.0%

                    50,000  Cementos Norte Pacasmayo S.A.                             67,022

                             (construction and property
                             development)

                     3,200  Telefonica del Peru S.A. ADR                              67,200
                                                                         ------------------------
                             (communications services)

                                                                                     134,222
                                                                         ------------------------

PHILIPPINES--2.3%

                   320,000  International Container Terminal
                             Services, Inc.                                           52,189

                             (transportation)

                   100,000  Ionics Circuit Inc.                                       57,940

                             (electrical and electronic components)

                   150,500  Music Corporation                                         60,286

                             (computer peripherals)

                     6,000  Philippine Long Distance Telephone
                             Company ADR                                             148,500
                                                                         ------------------------
                             (communications services)

                                                                                     318,915
                                                                         ------------------------

POLAND--3.4%

                     8,000  Bank Ochrony Srodowiska S.A.                              89,254

                             (banking)

                     2,000  Materialy Izolacyjne IZOLACJA S.A.(1)                    124,027

                             (construction and property
                             development)

Shares                                                                               Value
- --------------------------------------------------------------------------------------------------

                    38,000  Polifarb Cieszyn-Wroclaw S.A.                       $    156,024

                             (chemicals and resins)

                     4,300  Przedsiebiorstwo Farmaceutyczne
                             JELFA S.A.(1)                                            92,538
                                                                         ------------------------
                             (pharmaceuticals)

                                                                                     461,843
                                                                         ------------------------

PORTUGAL--5.6%

                     6,000  Banco Totta & Acores, SA Cl B                            113,207

                             (banking)

                     4,000  Cimpor-Cimentos de Portugal,
                             SGPS, SA                                                101,310

                             (building and home improvements)

                     7,000  EDP-Electricidade de
                             Portugal, S.A.(1)                                       126,520

                             (utilities)

                     5,000  Portugal Telecom S.A.                                    230,300

                             (communications services)

                     1,000  Portugal Telecom S.A. ADR                                 45,875

                             (communications services)

                     5,400  Somague-Sociedade Gestora de
                             Participacoes, SA                                        60,683

                             (construction and property
                             development)

                     1,000  Telecel-Comunicacaoes
                             Pessoais, SA(1)                                          91,565
                                                                         ------------------------
                             (communications services)

                                                                                     769,460
                                                                         ------------------------

RUSSIAN FEDERATION--3.6%

                       300  AO Tatneft ADR                                            37,950

                             (energy - services)

                     3,000  Irkutskenergo ADR                                         31,425

                             (utilities)

                     1,300  Lukoil Holding ADR                                        99,125

                             (energy - services)

                    10,000  SUN Brewing Ltd. GDR(1)                                  119,081

                             (food and beverage)

                     2,000  Unified Energy Systems GDR(1)                             45,750

                             (utilities)

                     5,000  Vimpel-Communications ADR(1)                             152,500
                                                                         ------------------------
                             (communications services)

                                                                                     485,831
                                                                         ------------------------

SINGAPORE--3.0%

                    14,000  Elec & Eltek International
                             Company Ltd.                                            102,900

                             (electrical and electronic components)

See Notes to Financial Statements


28      EMERGING MARKETS                       AMERICAN CENTURY INVESTMENTS


                            SCHEDULE OF INVESTMENTS
                               EMERGING MARKETS

NOVEMBER 30, 1997
Shares                                                                               Value
- --------------------------------------------------------------------------------------------------

                    90,000  Keppel Bank                                         $    147,907

                             (banking)

                    61,000  Natsteel Broadway Limited                                 89,365

                             (electrical and electronic components)

                    13,000  Rothmans Industries Limited                               68,496
                                                                         ------------------------
                             (tobacco)

                                                                                     408,668
                                                                         ------------------------

SOUTH AFRICA--4.7%

                    14,000  Dimension Data Holdings Ltd.                              60,513

                             (computer systems)

                    13,000  Ellerine Holdings Limited                                 90,439

                             (retail - general merchandise)

                    11,000  Fedsure Holdings Limited                                 127,241

                             (insurance)

                     2,500  Investec Holdings Limited                                 98,384

                             (financial services)

                     4,500  Liberty Life Association of Africa Ltd.                  113,924

                             (insurance)

                     3,500  Nedcor Limited                                            79,243

                             (banking)

                     7,000  Sasol Ltd.                                                70,526
                                                                         ------------------------
                             (basic materials)

                                                                                     640,270
                                                                         ------------------------

TAIWAN--1.5%

                    12,000  Standard Foods Taiwan
                             Limited GDR(1)                                          118,800

                             (food and beverage)

                     4,500  Synnex Technology International
                             Corp. GDR(1)                                             90,788
                                                                         ------------------------
                             (computer systems)

                                                                                     209,588
                                                                         ------------------------

THAILAND--1.2%

                    14,000  BEC World Public Co., Ltd.                                68,368

                             (broadcasting and media)

                     9,000  PTT Exploration and Production
                             Public Company Ltd.                                      98,503
                                                                         ------------------------
                             (energy - production and marketing)

                                                                                     166,871
                                                                         ------------------------

TURKEY--1.7%

                 1,421,000  Eczacibasi Ilac Sanayi ve Ticaret AS                      66,078

                             (pharmaceuticals)

                   100,000  Ford Otomotive Sanayi A.S.                                77,927

                             (automobiles and auto parts)


Shares/Principal Amount                                                              Value
- -------------------------------------------------------------------------------------------------

                 1,300,000  Trakya Cam Sanayii A.S.                           $       89,680
                                                                         ------------------------
                             (automobiles and auto parts)

                                                                                     233,685
                                                                         ------------------------

VENEZUELA--1.2%

                     4,000  Compania Anonima Nacional
                             Telefonos de Venezuela ADR                              158,000
                                                                         ------------------------
                             (communications services)

TOTAL COMMON STOCKS
& WARRANTS--79.2%                                                                 10,831,383
                                                                         ------------------------
   (Cost $11,656,031)


 PREFERRED STOCKS--9.8%

BRAZIL

                   325,000  Centrais Eletricas Brasileiras
                             S/A Cl B(1)                                             159,087

                             (utilities)

                 3,000,000  Cia Energetica de Minas Gerais                           144,686

                             (utilities)

                 1,759,949  Companhia de Gas de Sao Paulo(1)                         126,923

                             (utilities)

                     2,400  Companhia Vale do Rio Doce                                42,989

                             (metals and mining)

                   700,000  Eletropaulo-Eletricidade de
                             Sao Paulo SA                                            126,837

                             (utilities)

                 8,500,000  Ericsson Telecomunicacoes S.A.                           295,006

                             (communications equipment)

                   650,000  Petroleo Brasileiro S/A                                  141,215

                             (energy - production and marketing)

                 4,000,000  SA Mineracao da Trinidade-Samitri                        104,570

                             (metals and mining)

                     1,900  Telecomunicacoes Brasileiras
                             S.A. ADR                                                198,313
                                                                         ------------------------
                             (communications services)

                                                                                   1,339,626
                                                                         ------------------------

   (Cost $1,514,296)


 TEMPORARY CASH INVESTMENTS--11.0%

       $1,500,000 par value FHLMC Discount
              Notes, 5.63%, 12/1/97(3)                                             1,500,000
                                                                         ------------------------

   (Cost $1,500,000)

TOTAL INVESTMENT SECURITIES--100.0%                                              $13,671,009
                                                                         ========================
   (Cost $14,670,327)

See Notes to Financial Statements


ANNUAL REPORT                                      EMERGING MARKETS       29


                            SCHEDULE OF INVESTMENTS
                               EMERGING MARKETS

NOTES TO SCHEDULES OF INVESTMENTS

ADR = American Depositary Receipt

FHLMC = Federal Home Loan Mortgage Corporation

GDR = Global Depositary Receipt

(1) Non-income producing.

(2) Security was purchased  under Rule 144A of the  Securities  Act of 1933 and,
    unless registered under the Act or exempted from  registration,  may only be
    sold to qualified institutional investors. The aggregate value of restricted
    securities at November 30, 1997, was $92,493,  which represented 0.8% of net
    assets.

(3) Rate disclosed is the yield to maturity at purchase.
</TABLE>

See Notes to Financial Statements


30      EMERGING MARKETS                       AMERICAN CENTURY INVESTMENTS


<TABLE>
<CAPTION>
                      STATEMENTS OF ASSETS AND LIABILITIES

NOVEMBER 30, 1997
                                        INTERNATIONAL     INTERNATIONAL       EMERGING
                                           GROWTH           DISCOVERY          MARKETS
ASSETS
<S>                                    <C>              <C>              <C>           
Investment securities, at value 
(identified cost of $1,566,526,070,
$532,422,755, and $14,670,327, 
respectively) (Note 3) .............   $1,734,472,716   $  627,283,234   $   13,671,009

Foreign currency holdings,
at value (identified cost
of $4,206,899, $212,087,
and $36,511, respectively) .........        4,206,898          210,102           36,521

Cash ...............................          122,945             --               --

Receivable for forward foreign
currency exchange contracts ........          895,763          290,177             --

Receivable for investments sold ....       67,018,343       14,170,481          191,729

Receivable for capital
shares sold ........................        8,022,185             --               --

Dividends and interest
receivable .........................        2,962,349          495,977            2,411
                                       --------------   --------------   --------------
                                        1,817,701,199      642,449,971       13,901,670
                                       --------------   --------------   --------------
LIABILITIES

Disbursements in excess
of demand deposit cash .............        1,382,300          356,000        1,357,550

Payable for forward foreign
currency exchange contracts ........          394,905           42,135             --

Payable for investments purchased ..       56,566,641       14,741,600          689,952

Payable for capital
shares redeemed ....................          795,947          106,948            1,767

Accrued management
fees (Note 2) ......................        1,980,322          875,982           18,648

Distribution fees payable
(Note 2) ...........................            1,867             --               --

Service fees payable
(Note 2) ...........................            1,867             --               --

Other liabilities ..................            3,001              706            4,238
                                       --------------   --------------   --------------
                                           61,126,850       16,123,371        2,072,155
                                       --------------   --------------   --------------
NET ASSETS .........................   $1,756,574,349   $  626,326,600   $   11,829,515
                                       ==============   ==============   ==============
NET ASSETS CONSIST OF:

Capital (par value and
paid-in surplus) ...................   $1,359,864,403   $  501,329,189   $   13,575,775

Undistributed net
investment income ..................        5,233,208        1,404,025             --

Accumulated undistributed
 net realized gain (loss)
 from investment and
 foreign currency transactions .....      222,860,335       28,490,013         (747,570)

Net unrealized appreciation
 (depreciation) on investments
 and translation of assets and
 liabilities in foreign
 currencies (Note 3) ...............      168,616,403       95,103,373         (998,690)
                                       --------------   --------------   --------------
                                       $1,756,574,349   $  626,326,600   $   11,829,515
                                       ==============   ==============   ==============
Investor Class, $0.01 Par Value

Net assets .........................   $1,728,617,366   $  626,326,600   $   11,829,515

Shares outstanding .................      187,505,084       73,346,501        2,851,142

Net asset value per share ..........   $         9.22   $         8.54   $         4.15

Advisor Class, $0.01 Par Value

Net assets .........................   $    9,110,781              N/A              N/A

Shares outstanding .................          990,581              N/A              N/A

Net asset value per share ..........   $         9.20              N/A              N/A

Institutional Class, $0.01 Par Value

Net assets .........................   $   18,846,202              N/A              N/A

Shares outstanding .................        2,043,653              N/A              N/A

Net asset value per share ..........   $         9.22              N/A              N/A
</TABLE>

See Notes to Financial Statements


ANNUAL REPORT                  STATEMENTS OF ASSETS AND LIABILITIES       31

<TABLE>
<CAPTION>
                            STATEMENTS OF OPERATIONS

YEAR ENDED NOVEMBER 30, 1997
                                        INTERNATIONAL    INTERNATIONAL       EMERGING
                                           GROWTH          DISCOVERY         MARKETS(1)
INVESTMENT INCOME (LOSS)
<S>                                     <C>              <C>              <C>          
Income:

Dividends (net of foreign
 taxes withheld
 of $2,988,149, $814,896,
 and $1,089, respectively) ..........   $  20,225,691    $   6,831,213    $       9,188

Interest ............................       2,978,771          716,059           11,580
                                        -------------    -------------    -------------
                                           23,204,462        7,547,272           20,768
                                        -------------    -------------    -------------
Expenses (Note 2):

Management fees .....................      25,562,932       10,542,265           33,056

Distribution fees - Advisor Class ...          16,188             --               --

Shareholder services
fees - Advisor Class ................          16,188             --               --

Directors' fees and expenses ........          14,064            4,777                9
                                        -------------    -------------    -------------
                                           25,609,372       10,547,042           33,065

Fees waived by manager ..............      (2,872,954)        (939,629)            --
                                        -------------    -------------    -------------
 Net expenses .......................      22,736,418        9,607,413           33,065
                                        -------------    -------------    -------------
Net investment
income (loss) .......................         468,044       (2,060,141)         (12,297)
                                        -------------    -------------    -------------
REALIZED AND UNREALIZED GAIN (LOSS)
ON INVESTMENTS AND

FOREIGN CURRENCY (NOTE 3)

Net realized gain (loss) on:
Investments .........................     273,860,695       53,072,728         (707,173)

Foreign currency transactions .......     (44,850,435)     (20,522,211)         (51,024)
                                        -------------    -------------    -------------
                                          229,010,260       32,550,517         (758,197)
                                        -------------    -------------    -------------
Change in net unrealized appreciation
(depreciation) on:

Investments .........................      33,401,152       54,021,874         (819,363)

Translation of assets and
liabilities in foreign currencies ...     (14,880,280)      (6,663,255)        (179,327)
                                        -------------    -------------    -------------
                                           18,520,872       47,358,619         (998,690)
                                        -------------    -------------    -------------
Net realized and unrealized
gain (loss) on
investments and
foreign currency ....................     247,531,132       79,909,136       (1,756,887)
                                        -------------    -------------    -------------
Net Increase (Decrease)
in Net Assets
Resulting from Operations ...........   $ 247,999,176    $  77,848,995    $  (1,769,184)
                                        =============    =============    =============

- ----------
(1) September 30, 1997 (inception) through November 30, 1997.
</TABLE>

See Notes to Financial Statements


32     STATEMENTS OF OPERATIONS                AMERICAN CENTURY INVESTMENTS


<TABLE>
<CAPTION>
                       STATEMENTS OF CHANGES IN NET ASSETS

YEARS ENDED NOVEMBER 30, 1997
AND NOVEMBER 30, 1996
                                               INTERNATIONAL                         INTERNATIONAL                        EMERGING
                                                  GROWTH                               DISCOVERY                          MARKETS
Increase in Net Assets                      1997            1996                 1997             1996                    1997(1)

OPERATIONS
<S>                                   <C>                <C>                <C>                <C>                <C>             
Net investment
income (loss) .....................   $       468,044    $      (939,679)   $    (2,060,141)   $      (728,664)   $       (12,297)

Net realized gain (loss)
 on investments and
 foreign currency transactions ....       229,010,260        149,229,474         32,550,517         24,627,872           (758,197)

Change in net unrealized
 appreciation (depreciation) on
 investments and translation
 of assets and liabilites
 in foreign currencies ............        18,520,872         44,073,881         47,358,619         36,489,864           (998,690)
                                      ---------------    ---------------    ---------------    ---------------    ---------------
Net increase (decrease)
 in net assets
 resulting from operations ........       247,999,176        192,363,676         77,848,995         60,389,072         (1,769,184)
                                      ---------------    ---------------    ---------------    ---------------    ---------------
DISTRIBUTIONS TO SHAREHOLDERS

From net investment income:

 Investor Class ...................            (5,636)        (1,160,402)          (862,734)          (304,720)              --

In excess of net investment income:

Investor Class ....................              --                 --                 --             (344,800)              --

From net realized gains on
investment transactions:

 Investor Class ...................      (140,384,782)              --          (16,063,439)              --                 --

 Advisor Class ....................          (405,850)              --                 --                 --                 --
                                      ---------------    ---------------    ---------------    ---------------    ---------------
Decrease in net
assets from distributions .........      (140,796,268)        (1,160,402)       (16,926,173)          (649,520)              --
                                      ---------------    ---------------    ---------------    ---------------    ---------------
CAPITAL SHARE TRANSACTIONS
(NOTE 4)

Net increase (decrease)
in net assets from
capital share transactions ........       302,960,946        (55,234,332)       188,275,387        202,809,697         13,598,699
                                      ---------------    ---------------    ---------------    ---------------    ---------------
Net increase in net assets ........       410,163,854        135,968,942        249,198,209        262,549,249         11,829,515

NET ASSETS

Beginning of period ...............     1,346,410,495      1,210,441,553        377,128,391        114,579,142               --
                                      ---------------    ---------------    ---------------    ---------------    ---------------
End of period .....................   $ 1,756,574,349    $ 1,346,410,495    $   626,326,600    $   377,128,391    $    11,829,515
                                      ===============    ===============    ===============    ===============    ===============
Undistributed net
investment income .................   $     5,233,208    $       273,167    $     1,404,025    $       739,552               --
                                      ===============    ===============    ===============    ===============    ===============
</TABLE>

(1) September 30, 1997 (inception) through November 30, 1997.

See Notes to Financial Statements


ANNUAL REPORT                   STATEMENTS OF CHANGES IN NET ASSETS       33


                         NOTES TO FINANCIAL STATEMENTS

NOVEMBER 30, 1997

1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

    ORGANIZATION--American  Century World Mutual Funds,  Inc. (the  Corporation)
(formerly  Twentieth  Century World  Investors,  Inc.) is  registered  under the
Investment Company Act of 1940 as an open-end diversified  management investment
company.  Three  series  of funds  are  currently  issued  as  American  Century
Twentieth Century International Growth Fund (Growth), American Century Twentieth
Century  International  Discovery  Fund  (Discovery),  and  American  Century  -
Twentieth  Century  Emerging  Markets Fund (Emerging  Markets) (the Funds).  The
Funds' investment  objective is to seek capital growth by investing primarily in
equity  securities.   International  Growth  seeks  to  achieve  its  investment
objective by investing in securities of issuers in developed markets.  Discovery
seeks to achieve  its  investment  objective  by  investing  in  issuers  having
comparatively smaller market capitalizations.  Emerging Markets seeks to achieve
its investment  objective by investing in issuers in emerging market  countries.
Each Fund is authorized to issue three  classes of shares:  the Investor  Class,
the  Advisor  Class and the  Institutional  Class.  The three  classes of shares
differ  principally in their respective  shareholder  servicing and distribution
expenses and  arrangements.  All shares of each Fund represent an equal pro rata
interest  in the net assets of the class to which such shares  belong,  and have
identical voting, dividend,  liquidation and other rights and the same terms and
conditions,  except for class specific  expenses and exclusive rights to vote on
matters  affecting  only  individual  classes.  Sale of the  Advisor  Class  and
Institutional  Class for Discovery and Emerging  Markets had not commenced as of
November 30, 1997. The following significant accounting policies, related to all
classes of the Funds,  are in  accordance  with  accounting  policies  generally
accepted in the investment company industry.

    SECURITY  VALUATIONS--Portfolio  securities  traded primarily on a principal
securities  exchange are valued at the last reported sales price, or the mean of
the  latest  bid and  asked  prices  where no last  sales  price  is  available.
Securities traded  over-the-counter are valued at the mean of the latest bid and
asked prices or, in the case of certain foreign securities, at the last reported
sales price,  depending on local  convention or regulation.  When valuations are
not readily  available,  securities  are valued at fair value as  determined  in
accordance with procedures adopted by the Board of Directors.

    SECURITY  TRANSACTIONS--Security  transactions are accounted for on the date
purchased  or  sold.  Net  realized  gains  and  losses  are  determined  on the
identified cost basis, which is also used for federal income tax purposes.

    INVESTMENT  INCOME--Dividend  income less foreign taxes withheld (if any) is
recorded as of the ex-dividend date.  Interest income is recorded on the accrual
basis and includes accretion of discounts and amortization of premiums.

    FOREIGN  CURRENCY  TRANSACTIONS--The  accounting  records  of the  Funds are
maintained in U.S. dollars.  All assets and liabilities  initially  expressed in
foreign currencies are converted into U.S. dollars at prevailing exchange rates.
Purchases and sales of investment securities,  dividend and interest income, and
certain  expenses  are  translated  at the rates of exchange  prevailing  on the
respective dates of such transactions.

    Net realized foreign  currency  exchange gains or losses arise from sales of
investment securities,  sales of foreign currencies,  and the difference between
asset and liability amounts initially stated in foreign  currencies and the U.S.
dollar value of the amounts  actually  received or paid. Net unrealized  foreign
currency  exchange gains or losses arise from changes in the value of investment
securities  and other  assets  and  liabilities  resulting  from  changes in the
exchange rates.

    Net  realized  and  unrealized  foreign  currency  exchange  gains or losses
occurring during the holding period of investment  securities are a component of
realized  gain  (loss)  on  foreign   currency   transactions   and   unrealized
appreciation  (depreciation) on translation of assets and liabilities in foreign
currencies, respectively.

    FORWARD  FOREIGN  CURRENCY  EXCHANGE  CONTRACTS--The  Funds may  enter  into
forward foreign currency exchange contracts for the purpose of settling specific
purchases or sales of securities  denominated in a foreign  currency or to hedge
the Fund's  exposure  to  foreign  currency  exchange  rate  fluctuations.  When
required, the Funds will segregate assets in an amount sufficient to cover their
obligations  under the hedge  contracts.  The net U.S.  dollar  value of foreign
currency  underlying  all  contractual  commitments  held by the  Funds  and the
resulting  unrealized  appreciation or depreciation  are determined  daily using
prevailing exchange rates.  Forward contracts involve elements of market risk in
excess of the amount reflected in the Statements of Assets and Liabilities.  The
Funds bear the risk of an unfavorable  change in the foreign  currency  exchange
rate  underlying  the forward  contract.  Additionally,  losses may arise if the
counterparties do not perform under the contract terms.

    REPURCHASE  AGREEMENTS--The  Funds may enter into repurchase agreements with
institutions that the Funds'  investment  advisor,  American Century  Investment
Management,  Inc. (ACIM),  has determined are creditworthy  pursuant to criteria
adopted by the Board of  Directors.  Each  repurchase  agreement  is recorded at
cost. The Funds require that the collateral, represented by securities, received
in a  repurchase  transaction  be  transferred  to  the  custodian  in a  manner
sufficient  to enable  the Funds to obtain  those  securities  in the event of a
default under the repurchase  agreement.  ACIM monitors,  on a daily basis,  the
value of the  securities  transferred  to ensure  the value,  including  accrued
interest, of the securities under each repur-

34        NOTES TO FINANCIAL STATEMENTS      AMERICAN CENTURY INVESTMENTS


                         NOTES TO FINANCIAL STATEMENTS

NOVEMBER 30, 1997

chase  agreement is greater than amounts owed to the Funds under each repurchase
agreement.

    INCOME  TAX  STATUS--It  is the  policy of the Funds to  distribute  all net
investment  income  and  net  realized  capital  gains  to  shareholders  and to
otherwise qualify as a regulated  investment company under the provisions of the
Internal  Revenue  Code.  Accordingly,  no  provision  has been made for federal
income taxes.

    DISTRIBUTIONS TO SHAREHOLDERS--Distributions to shareholders are recorded on
the ex-dividend date.  Distributions from net investment income and net realized
gains are declared and paid annually.

    The  character  of  distributions  made during the year from net  investment
income or net realized gains may differ from their ultimate characterization for
federal income tax purposes.  These  differences  are primarily due to differing
treatments for foreign currency transactions and wash sales.

    On December 19, 1997, Growth and Discovery  declared and paid a distribution
to  shareholders of record on that date. The  distributions  from net investment
income in Growth were $0.0282,  $0.0052, and $0.0298 for the Investor,  Advisor,
and Institutional Classes, respectively. The distribution from net realized gain
on  investments  was $1.2789 for all classes of Growth.  The  distribution  from
Discovery  consisted of $0.0206 from net investment  income and $0.4652 from net
realized gain on investments.

    At November 30, 1997,  Emerging Markets had accumulated net realized capital
loss  carryovers  for  federal  income tax  purposes of  approximately  $600,000
(expiring 2005) which may be used to offset future taxable gains.

    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 the reported amounts of increases and decreases in
net assets from operations  during the period.  Actual results could differ from
these estimates.

- --------------------------------------------------------------------------------
2. TRANSACTIONS WITH RELATED PARTIES

    The  Corporation  has  entered  into  Management  Agreements  with ACIM that
provide each Fund with investment  advisory and management  services in exchange
for a single,  unified management fee per class. The Agreements provide that all
expenses of the Funds, except brokerage commissions,  taxes, interest,  expenses
of those directors who are not considered "interested persons" as defined in the
Investment  Company  Act of 1940  (including  counsel  fees)  and  extraordinary
expenses, will be paid by ACIM. The fee is computed daily and paid monthly based
on each class's average daily closing net assets during the previous month.

     Effective August 1, 1996 through July 31, 1997, ACIM  voluntarily  waived a
portion of its annual management fee for Growth and Discovery.  A new management
agreement  was  approved  on July 30,  1997,  effective  August 1,  1997,  which
replaced the previously  existing  contracts between the Funds and ACIM. For the
year ended November 30, 1997, the management fees  voluntarily  absorbed by ACIM
for Growth and Discovery were $2,872,954 and $939,629, respectively.

   The new annual management fee for each class of Growth is as follows:

                            Investor        Advisor       Institutional
                              Class          Class            Class
AVERAGE NET ASSETS
First $1 billion ...........  1.50%          1.25%            1.30%
Of the next $1 billion .....  1.20%          0.95%            1.00%
Over $2 billion ............  1.10%          0.85%            0.90%


   The new annual  management  fee for the  Investor  Class of  Discovery  is as
follows:
                                                              Investor Class
AVERAGE NET ASSETS
First $500 million ..............................................  1.75%
Of the next $500 million ........................................  1.40%
Over $1 billion .................................................  1.20%


ANNUAL REPORT                       NOTES TO FINANCIAL STATEMENTS       35


                         NOTES TO FINANCIAL STATEMENTS

NOVEMBER 30, 1997

   The annual  management fee for the Investor  Class of Emerging  Markets is as
follows:
                                                                 Investor Class
AVERAGE NET ASSETS
First $500 million ..................................................   2.00%
Of the next $500 million ............................................   1.50%
Over $1 billion .....................................................   1.25%

    The Board of Directors has adopted the Advisor Class Master Distribution and
Shareholder  Services Plan (the Plan),  pursuant to Rule 12b-1 of the Investment
Company Act of 1940.  The Plan  provides  that the Funds will pay ACIM an annual
distribution  fee equal to 0.25% and  service  fee equal to 0.25%.  The fees are
computed  daily and paid  monthly  based on the Advisor  Class's  average  daily
closing net assets  during the previous  month.  The  distribution  fee provides
compensation for distribution  expenses incurred by financial  intermediaries in
connection  with  distributing  shares of the Advisor Class  including,  but not
limited to, payments to brokers,  dealers, and financial  institutions that have
entered into sales  agreements with respect to shares of the Funds.  The service
fee provides  compensation for shareholder and administrative  services rendered
by ACIM,  its  affiliates or independent  third party  providers.  Fees incurred
under the Plan during the year ended November 30, 1997, were $32,376 for Growth.

    Certain  officers and directors of the  Corporation are also officers and/or
directors,  and,  as a  group,  controlling  stockholders  of  American  Century
Companies,  Inc., the parent of the Corporation's  investment manager, ACIM, the
Corporation's  transfer agent,  American Century Services  Corporation,  and the
registered broker dealer, American Century Investment Services, Inc.

- --------------------------------------------------------------------------------
3. INVESTMENT TRANSACTIONS

  Investment  transactions  (excluding  short-term  investments)  for the period
ended November 30, 1997 were as follows:

                                                                   Emerging
                                Growth            Discovery         Markets
Purchases .................  $2,761,315,621      $944,533,630      $16,620,026
Proceeds from Sales .......  $2,552,357,908      $794,439,661       $2,698,976


   On  November  30,  1997,  the  composition  of  unrealized  appreciation  and
depreciation of investment securities based on the aggregate cost of investments
for federal income tax purposes was as follows:

                                                                  Emerging
                               Growth           Discovery          Markets
Appreciation .............  $213,901,789      $113,757,115          $180,288
Depreciation .............   (63,756,522)      (24,090,347)       (1,335,827)
                           -------------      -------------     -------------
Net ......................  $150,145,267       $89,666,768       $(1,155,539)
                           ==============     =============     =============
Federal Tax Cost ......... 1,584,327,449      $537,616,466       $14,826,548
                           ==============     =============     =============


36       NOTES TO FINANCIAL STATEMENTS             AMERICAN CENTURY INVESTMENTS


                         NOTES TO FINANCIAL STATEMENTS

NOVEMBER 30, 1997

4. CAPITAL SHARE TRANSACTIONS

    There are 400,000,000,  100,000,000,  and 50,000,000  shares of the Investor
Class  authorized  for issuance  for Growth,  Discovery,  and Emerging  Markets,
respectively.  There are 170,000,000 and 60,000,000  shares of the Advisor Class
and Institutional Class, respectively, authorized for issuance for Growth.
Transactions in shares of the Funds were as follows:

<TABLE>
                                         GROWTH                          DISCOVERY               EMERGING MARKETS(1)
                                  Shares           Amount         Shares           Amount       Shares         Amount
INVESTOR CLASS

Year ended November 30, 1997:

<S>                             <C>           <C>                <C>          <C>              <C>         <C>         
Sold ........................   139,809,145   $ 1,274,757,814    39,820,482   $ 327,139,130    3,580,134   $ 16,726,066

Issued in reinvestment
of distributions ............    17,809,533       137,887,292     2,369,407      16,757,464         --             --

Redeemed ....................  (123,985,637)   (1,133,838,821)  (18,446,269)   (155,621,207)    (728,992)    (3,127,367)
                               ------------   ---------------   -----------   -------------   ----------   ------------
Net increase ................    33,633,041   $   278,806,285    23,743,620   $ 188,275,387    2,851,142   $ 13,598,699
                               ============   ===============   ===========   =============   ==========   ============
Year ended November 30, 1996:

Sold ........................    49,156,430   $   396,490,732    34,313,861   $ 235,537,402

Issued in reinvestment
of distributions ............       149,517         1,139,329       109,339         639,633

Redeemed ....................   (56,541,549)     (456,529,640)   (4,907,884)    (33,367,338)
                                -----------     -------------    ----------    ------------
Net increase (decrease) .....    (7,235,602)  $   (58,899,579)   29,515,316   $ 202,809,697
                                ===========     =============    ==========    ============
ADVISOR CLASS

Year ended November 30, 1997:

Sold ........................     1,008,880   $     9,379,963

Issued in reinvestment
of distributions ............        52,435           405,850

Redeemed ....................      (506,709)       (4,696,551)
                                 ----------      ------------
Net increase ................       554,606   $     5,089,262
                                 ==========      ============
October 2, 1996(2)
 through November 30, 1996

Sold ........................       441,628   $     3,713,387

Redeemed ....................        (5,653)          (48,140)
                                 ----------      ------------
Net increase ................       435,975   $     3,665,247
                                 ==========      ============
INSTITUTIONAL CLASS

November 20, 1997(3)
through November 30, 1997

Sold ........................     2,043,653   $    19,065,399
                                 ==========      ============

- ----------
(1) September 30, 1997 (inception) through November 30, 1997.

(2) Sale of the Advisor Class in Growth commenced on October 2, 1996.

(3) Sale of the Institutional Class in Growth commenced on November 20, 1997.
</TABLE>


ANNUAL REPORT                         NOTES TO FINANCIAL STATEMENTS       37


<TABLE>
<CAPTION>
                              FINANCIAL HIGHLIGHTS
                              INTERNATIONAL GROWTH

                                                                    For a Share Outstanding Throughout the Years Ended November 30

                                                                                      Investor Class

                                                  1997                  1996                  1995             1994           1993
PER-SHARE DATA
<S>                                    <C>                   <C>                   <C>                <C>              <C>        
Net Asset Value,
Beginning of Year ...................  $          8.73       $          7.51       $          7.47    $        7.34    $      5.79
                                       ---------------       ---------------       ---------------    -------------    -----------
Income From
Investment Operations

  Net Investment Income (Loss) ......             --                   (0.01)(1)              0.01            (0.04)         (0.04)

  Net Realized and Unrealized
  Gain on Investment Transactions ...             1.41                  1.24                  0.40             0.57           1.78
                                       ---------------       ---------------       ---------------    -------------    -----------
  Total From Investment Operations ..             1.41                  1.23                  0.41             0.53           1.74
                                       ---------------       ---------------       ---------------    -------------    -----------
Distributions

  From Net Investment Income ........             --                   (0.01)                 --               --            (0.04)
  In Excess of Net
  Investment Income .................             --                    --                    --               --            (0.15)

  From Net Realized Gains
  on Investment Transactions ........            (0.92)                 --                   (0.37)           (0.40)          --
                                       ---------------       ---------------       ---------------    -------------    -----------
  Total Distributions ...............            (0.92)                (0.01)                (0.37)           (0.40)         (0.19)
                                       ---------------       ---------------       ---------------    -------------    -----------
Net Asset Value, End of Year ........  $          9.22       $          8.73       $          7.51    $        7.47    $      7.34
                                       ===============       ===============       ===============    =============    ===========
  Total Return(2) ...................            18.12%                16.35%                 5.93%            7.28%         31.04%

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses
to Average Net Assets ...............             1.38%(3)              1.65%(3)              1.77%            1.84%          1.90%

Ratio of Net Investment Income
(Loss) to Average Net Assets ........             0.04%                (0.07)%                0.25%           (0.53)%        (0.34)%

Portfolio Turnover Rate .............              163%                  158%                  169%             242%           255%

Average Commission Paid per
Share of Equity Security Traded .....  $        0.0069       $        0.0195       $        0.0020            --(4)          --(4)

Net Assets, End of
Year (in thousands) .................  $     1,728,617       $     1,342,608       $     1,210,442    $   1,316,642    $   759,238
</TABLE>

- ----------
(1) Computed using average shares outstanding throughout the period.

(2) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions, if any.

(3) American Century Investment  Manangement,  Inc. voluntarily waived a portion
    of its  management  fee  effective  August 1, 1996 through July 31, 1997. In
    absence of the  management  fee waiver,  the ratio of operating  expenses to
    average  net  assets  would  have been  1.56% and 1.76% for the years  ended
    November 30, 1997 and November 30, 1996, respectively.

(4) Disclosure of average  commission  paid per share of equity  security traded
    was not required prior to the year ended November 30, 1995.

See Notes to Financial Statements


38      FINANCIAL HIGHLIGHTS                   AMERICAN CENTURY INVESTMENTS

<TABLE>
<CAPTION>
                              FINANCIAL HIGHLIGHTS
                              INTERNATIONAL GROWTH

For a Share Outstanding Throughout the Years Ended November 30 (except as noted)

                                                   Advisor Class
                                                1997         1996(1)
PER-SHARE DATA
<S>                                           <C>               <C>        
Net Asset Value,
Beginning of Period .....................     $      8.72       $      8.41
                                              -----------       -----------
Income From
Investment Operations

  Net Investment Loss ...................           (0.03)            (0.01)(2)

  Net Realized and
  Unrealized Gain on
  Investment Transactions ...............            1.43              0.32
                                              -----------       -----------
  Total From Investment

  Operations ............................            1.40              0.31
                                              -----------       -----------
Distributions

  From Net Realized Gains
  on Investment Transactions ............           (0.92)             --
                                              -----------       -----------
Net Asset Value,
End of Period ...........................     $      9.20       $      8.72
                                              ===========       ===========
  Total Return(3) .......................           17.97%             3.69%

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses
to Average Net Assets ...................            1.63%             1.67%(4)

Ratio of Net Investment
Loss to Average Net Assets ..............           (0.21)%          (0.76)%(4)

Portfolio Turnover Rate .................             163%              158%

Average Commission Paid per
Share of Equity Security Traded .........     $    0.0069       $    0.0195

Net Assets, End of
Period (in thousands) ...................     $     9,111       $     3,803
</TABLE>

- ----------
(1) October 2, 1996 (commencement of sale) through November 30, 1996.

(2) Computed using average shares outstanding throughout the period.

(3) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions,  if any. Total returns for periods less than one year are not
    annualized.

(4) Annualized.

See Notes to Financial Statements


ANNUAL REPORT                                  FINANCIAL HIGHLIGHTS       39


                             FINANCIAL HIGHLIGHTS
                             INTERNATIONAL GROWTH

          For a Share Outstanding Throughout the Period Ended November 30, 1997

                                                          Institutional Class

                                                                    1997(1)

PER-SHARE DATA

Net Asset Value, Beginning of Period ........................  $       9.26
                                                               ------------
Loss From Investment Operations

 Net Realized and Unrealized Loss on Investment Transactions          (0.04)
                                                               ------------
Net Asset Value, End of Period ..............................  $       9.22
                                                               ============
 Total Return(2) ............................................         (0.43)%

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to Average Net Assets ...........          1.18%(3)

Ratio of Net Investment Loss to Average Net Assets ..........        (0.53)%(3)

Portfolio Turnover Rate .....................................           163%

Average Commission Paid per Share
of Equity Security Traded ...................................  $     0.0069

Net Assets, End of Period (in thousands) ....................  $     18,846

- ----------
(1) November 20, 1997 (commencement of sale) through November 30, 1997.

(2) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions,  if any. Total returns for periods less than one year are not
    annualized.

(3) Annualized.

See Notes to Financial Statements


40      FINANCIAL HIGHLIGHTS                   AMERICAN CENTURY INVESTMENTS

<TABLE>
<CAPTION>
                             FINANCIAL HIGHLIGHTS
                            INTERNATIONAL DISCOVERY

or a Share Outstanding Throughout the Years Ended November 30 (except as noted)

                                                                           Investor Class

                                                  1997          1996            1995          1994(1)

PER-SHARE DATA
<S>                                               <C>          <C>             <C>             <C>  
Net Asset Value,
Beginning of Period ...........................   $7.60        $5.70           $5.39           $5.00
                                                --------     ---------       ---------      ----------
Income From Investment Operations

  Net Investment Income (Loss) ................  (0.03)       (0.02)(2)         0.03          (0.02)

  Net Realized and Unrealized
  Gain on Investment Transactions .............   1.31          1.95            0.28           0.41
                                                --------     ---------       ---------      ----------
  Total From Investment Operations ............   1.28          1.93            0.31           0.39
                                                --------     ---------       ---------      ----------
Distributions

  From Net Investment Income. .................  (0.02)        (0.01)             -              -

  In Excess of Net
  Investment Income ...........................     -          (0.02)             -               -

  From Net Realized Gains
  In Investment Transactions ..................  (0.32)           -               -               -
                                                --------     ---------       ---------      ----------
  Total Distributions .........................  (0.34)        (0.03)             -               -
                                                --------     ---------       ---------      ----------
Net Asset Value, End of Period ................  $8.54         $7.60           $5.70          $5.39
                                                ========     =========       ==========     ==========
  Total Return(3) .............................  17.76%        34.06%           5.75%          7.80%

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses
to Average Net Assets ......................... 1.70%(4)      1.88%(4)          2.00%        2.00%(5)

Ratio of Net Investment Income
(Loss) to Average Net Assets ..................  (0.37)%       (0.31)%          0.27%       (0.48)%(5)

Portfolio Turnover Rate .......................    146%         130%            168%            56%

Average Commission Paid per
Share of Equity Security Traded ...............  $0.0054       $.0054          $.0040          --(6)

Net Assets, End of Period (in thousands) ...... $626,327      $377,128        $114,579       $111,202
</TABLE>

- ----------
(1) April 1, 1994 (inception) through November 30, 1994.

(2) Computed using average shares outstanding throughout the period.

(3) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions,  if any. Total returns for periods less than one year are not
    annualized.

(4) American Century Investment  Manangement,  Inc. voluntarily waived a portion
    of its  management  fee  effective  August 1, 1996 through July 31, 1997. In
    absence of the  management  fee waiver,  the ratio of operating  expenses to
    average  net  assets  would  have been  1.87% and 1.99% for the years  ended
    November 30, 1997 and November 30, 1996, respectively.

(5) Annualized.

(6) Disclosure of average  commission  paid per share of equity  security traded
    was not required prior to the year ended November 30, 1995.

See Notes to Financial Statements


ANNUAL REPORT                                  FINANCIAL HIGHLIGHTS       41


                             FINANCIAL HIGHLIGHTS
                               EMERGING MARKETS

          For a Share Outstanding Throughout the Period Ended November 30, 1997

                                                                  Investor Class

                                                                      1997(1)

PER-SHARE DATA

Net Asset Value, Beginning of Period .............................     $5.00
                                                                     ---------
Loss From Investment Operations

  Net Investment Loss(2) .........................................    (0.01)

  Net Realized and Unrealized

  Loss on Investment Transactions ................................    (0.84)
                                                                     ---------
Total From Investment Operations .................................    (0.85)
 .                                                                    ---------
Net Asset Value End of Period ....................................     $4.15
                                                                     =========
  Total Return(3) ................................................   (17.00)%

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses
to Average Net Assets ............................................   2.00%(4)

Ratio of Net Investment Loss
to Average Net Assets ............................................  (0.74)%(4)

Portfolio Turnover Rate ..........................................      36%

Average Commission Paid per
Share of Equity Security Traded ..................................    $0.0012

Net Assets, End of Period
(in thousands). ..................................................    $11,830

- ----------
(1) September 30, 1997 (inception) through November 30, 1997.

(2) Computed using average shares outstanding throughout the period.

(3) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions,  if any. Total returns for periods less than one year are not
    annualized.

(4) Annualized.

See Notes to Financial Statements


42     FINANCIAL HIGHLIGHTS                   AMERICAN CENTURY INVESTMENTS


                         INDEPENDENT AUDITORS' REPORT

The Board of Directors and Shareholders,
American Century World Mutual Funds, Inc.:

  We have  audited  the  accompanying  statements  of  assets  and  liabilities,
including the schedules of investments,  of American Century - Twentieth Century
International  Growth Fund,  American Century - Twentieth Century  International
Discovery Fund and American  Century - Twentieth  Century  Emerging Markets Fund
(the "Funds"),  comprising  American Century World Mutual Funds, Inc.  (formerly
Twentieth  Century  World  Investors,  Inc.),  as of November 30, 1997,  and the
related  statements  of  operations  and changes in net assets for the year then
ended  (September 30, 1997,  inception,  through  November 30, 1997 for American
Century - Twentieth Century Emerging Markets Fund), and the financial highlights
for the year then ended  (September 30, 1997,  inception,  through  November 30,
1997 for American  Century - Twentieth  Century  Emerging  Markets Fund).  These
financial  statements and the financial highlights are the responsibility of the
Funds'  management.  Our  responsibility  is to  express  an  opinion  on  these
financial  statements  and the  financial  highlights  based on our audits.  The
financial  statements and the financial highlights of American Century Twentieth
Century  International  Growth Fund and  American  Century -  Twentieth  Century
International  Discovery  Fund for each of the periods in the  four-year  period
ended  November  30, 1996 were audited by other  auditors  whose  report,  dated
January 3, 1997,  expressed  an  unqualified  opinion  on those  statements  and
financial highlights.

  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 and the financial
highlights are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements. Our procedures included confirmation of securities owned at November
30, 1997 by  correspondence  with the custodian,  brokers and, when replies were
not  received,  other  alternate  auditing  procedures.  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,  such financial  statements and financial  highlights  present
fairly,  in all material  respects,  the financial  position of American Century
Twentieth  Century  International  Growth  Fund,  American  Century -  Twentieth
Century  International  Discovery Fund and American Century - Twentieth  Century
Emerging Markets Fund as of November 30, 1997, the results of their  operations,
the changes in their net assets,  and the  financial  highlights  for the period
then ended in conformity with generally accepted accounting principles.

Deloitte & Touche LLP
Kansas City, Missouri
January 13, 1998


ANNUAL REPORT                           INDEPENDENT AUDITORS' REPORT      43


                             PROXY VOTING RESULTS

    An annual meeting of shareholders  was held on July 30, 1997, to vote on the
following  proposals.  All of the  proposals  received the required  majority of
votes and were adopted.

    A summary of voting results is listed below each proposal.

PROPOSAL 1:

    To elect a Board of Directors of nine members to hold office for the ensuing
year or until their successors are elected and qualified.

                                     GROWTH                  DISCOVERY

James E. Stowers, Jr.

                      For:         102,975,482                48,046,640

                      Withheld:      1,719,684                   813,599



James E. Stowers III

                      For:         102,969,843                48,021,509

                      Withheld:      1,725,323                   838,730


Thomas A. Brown

                      For:         103,022,896                48,085,302

                      Withheld:      1,672,270                   774,937


Robert W. Doering, M.D.

                       For:        102,899,552                48,026,577

                      Withheld:      1,795,614                   833,662


D.D. (Del) Hock

                      For:         102,991,231                48,059,508

                      Withheld:      1,703,935                   800,731


Linsley L. Lundgaard

                      For:         102,882,241                47,990,246

                      Withheld:      1,812,925                   869,993


Donald H. Pratt

                      For:         103,015,556                48,080,423

                      Withheld:      1,679,610                   779,816


Lloyd T. Silver, Jr.

                      For:         102,968,436                48,059,057

                      Withheld:      1,726,730                   801,182


M. Jeannine Strandjord

                      For:         102,974,461                48,073,878

                      Withheld:      1,720,705                   786,361


PROPOSAL 2:

    To  vote  on  approval  of a  Management  Agreement  with  American  Century
Investment Management, Inc.

                          GROWTH               DISCOVERY
                INVESTOR          ADVISOR       INVESTOR

For:          98,930,078          586,501     47,314,963

Against:       2,109,181                0      1,067,714

Abstain:         786,726                0        165,074

Broker
Non-Vote:      2,282,680                -        312,488


PROPOSAL 3:

    To vote on the  selection by the Board of Directors of Deloitte & Touche LLP
as independent auditors for the Corporation.


                 GROWTH       DISCOVERY

For:         102,420,407    47,915,390

Against:       1,604,933       821,140

Abstain:         669,826       123,709


44     PROXY VOTING RESULTS                   AMERICAN CENTURY INVESTMENTS


                             PROXY VOTING RESULTS

PROPOSAL 4:

    To vote on the  adoption  of  standardized  investment  limitations  for the
following items:

*  Eliminate the fundamental investment limitation concerning diversification of
    investments.

                              GROWTH      DISCOVERY

       For:              92,241,464      46,407,153

       Against:           9,080,236       1,852,106

       Abstain:           1,090,786         288,492

       Broker Non-Vote:   2,282,680         312,488

*  Amend the fundamental investment limitation concerning the issuance of senior
    securities.

                            GROWTH         DISCOVERY

       For:                 94,145,350    46,374,796

       Against:              7,165,336     1,886,348

       Abstain:              1,101,800       286,607

       Broker Non-Vote:      2,282,680       312,488

* Amend the fundamental investment limitation concerning borrowing.

                         GROWTH           DISCOVERY

    For:                91,596,563       46,232,886

    Against:             9,738,901        2,028,258

    Abstain:             1,077,022          286,607

    Broker Non-Vote:     2,282,680          312,488

* Amend the fundamental investment limitation concerning lending.

                          GROWTH          DISCOVERY

       For:               91,724,614     46,312,563

       Against:            9,605,504      1,946,696

       Abstain:            1,082,368        288,492

       Broker Non-Vote:    2,282,680        312,488

*   Amend the fundamental  investment  limitation  concerning  concentration  of
    investments in a particular industry.

                         GROWTH         DISCOVERY

       For:              92,101,709    46,371,034

       Against:           9,255,222     1,890,110

       Abstain:           1,055,555       286,607

       Broker Non-Vote:   2,282,680       312,488


* Eliminate the fundamental investment limitation regarding investments in
    illiquid securities.

                               GROWTH          DISCOVERY

    For:                      93,907,349       46,345,470

    Against:                   7,413,483        1,915,674

    Abstain:                   1,091,654          286,607

    Broker Non-Vote:           2,282,680          312,488



* Eliminate the fundamental limitation concerning investment in other investment
    companies.

                                    GROWTH             DISCOVERY

       For:                       94,305,273           46,410,240

       Against:                    7,035,543            1,844,788

       Abstain:                    1,071,670              292,723

       Broker Non-Vote:            2,282,680              312,488

* Amend the fundamental investment limitation concerning investments in real
    estate.

                            GROWTH                 DISCOVERY

    For:                   94,417,726                 46,410,824

    Against:                6,953,395                  1,850,320

    Abstain:                1,041,365                    286,607

    Broker Non-Vote:        2,282,680                    312,488


ANNUAL REPORT                                   PROXY VOTING RESULTS      45


                             PROXY VOTING RESULTS

* Amend the fundamental investment limitation concerning underwriting.


                                       GROWTH                 DISCOVERY

    For:                              94,233,971                 46,442,819

    Against:                           7,040,110                  1,818,425

    Abstain:                           1,138,405                    286,507

    Broker Non-Vote:                   2,282,680                    312,488


* Amend the fundamental investment limitation concerning commodities.


                                       GROWTH                 DISCOVERY

    For:                              93,649,852                 46,272,141

    Against:                           7,653,642                  1,989,003

    Abstain:                           1,108,992                    286,607

    Broker Non-Vote:                   2,282,680                    312,488


*   Eliminate the fundamental  limitation concerning investments in issuers with
    less than three years of continuous operations.

                                       GROWTH                 DISCOVERY

    For:                              94,207,994                 46,445,140

    Against:                           7,103,772                  1,816,004

    Abstain:                           1,100,720                    286,607

    Broker Non-Vote:                   2,282,680                    312,488


* Eliminate the fundamental limitation concerning short sales.

                                  GROWTH                   DISCOVERY

       For:                       93,766,081             46,249,850

       Against:                    7,551,349              2,011,294

       Abstain:                    1,095,056                286,607

       Broker Non-Vote:            2,282,680                312,488


* Eliminate the fundamental investment limitation concerning margin purchases of
    securities.

                                       GROWTH          DISCOVERY

       For:                          93,651,220         46,255,019

       Against:                       7,644,015          2,006,125

       Abstain:                       1,117,251            286,607

       Broker Non-Vote:               2,282,680            312,488


46     PROXY VOTING RESULTS                   AMERICAN CENTURY INVESTMENTS


                       SHARE CLASS AND RETIREMENT ACCOUNT
                                   INFORMATION

SHARE CLASSES

    Until September 3, 1996,  International  Growth and International  Discovery
issued one class of fund shares,  reflecting the fact that most investors bought
their shares directly from American Century.  All investors paid the same annual
unified management fee and did not pay any commissions or other fees to purchase
shares from American Century.

    Now  more  share   purchases  are  made  by  investors   through   financial
intermediaries  (who ordinarily are compensated for the additional services they
provide),  or by very large  institutional  investors,  who expect  lower  costs
because of their size. In September 1996,  American Century began to offer three
classes of shares for International Growth and International Discovery. American
Century also offers three classes of shares for Emerging  Markets.  One class is
for investors who still buy directly from American Century, one is for investors
who  buy  through  financial   intermediaries,   and  the  third  is  for  large
institutional customers.

    The original class of shares is called the INVESTOR CLASS. All shares issued
and outstanding  before September 3, 1996 have been designated as Investor Class
shares.  Investor  Class shares may also be purchased  after  September 3, 1996.
Investor  Class  shareholders  do not pay any  commissions  or  other  fees  for
purchase  of fund shares  directly  from  American  Century.  Investors  who buy
Investor  Class  shares  through  a  broker-dealer  may be  required  to pay the
broker-dealer a transaction fee. THE PRICE AND PERFORMANCE OF THE INVESTOR CLASS
SHARES ARE LISTED IN NEWSPAPERS. NO OTHER CLASS IS CURRENTLY LISTED.

    In  addition,  there  is an  ADVISOR  CLASS,  which is sold  through  banks,
broker-dealers, insurance companies and financial advisors. Advisor Class shares
are subject to a 0.50% Rule 12b-1 service and distribution fee. Half of that fee
is available to pay for recordkeeping and administrative  services,  and half is
available  to  pay  for   distribution   services   provided  by  the  financial
intermediary  through  which the Advisor Class shares are  purchased.  The total
expense ratio of the Advisor Class shares is 0.25% higher than the total expense
ratio of the Investor Class shares.

    There is also an  INSTITUTIONAL  CLASS,  which is available  to  endowments,
foundations,  defined benefit pension plans or financial  intermediaries serving
these  investors.  This class  recognizes the  relatively  lower cost of serving
institutional customers and others who invest at least $5 million in an American
Century fund or at least $10 million in multiple  funds.  In  recognition of the
comparatively lower transaction costs on large accounts, the total expense ratio
of the Institutional Class shares is 0.20% less than the Investor Class shares.

    The Advisor and Institutional Classes of shares for International  Discovery
and Emerging Markets had not commenced as of November 30, 1997.

    All  classes  of  shares  represent  a pro rata  interest  in the  funds and
generally have the same rights and preferences.

RETIREMENT ACCOUNT INFORMATION

    As required by law,  any  distributions  you receive from an IRA and certain
403(b)  distributions [not eligible for rollover to an IRA or to another 403(b)]
are subject to federal  income tax  withholding  at the rate of 10% of the total
amount withdrawn,  unless you elect not to have withholding  apply. If you don't
want us to withhold on this amount, you may send us a written notice not to have
the federal  income tax  withheld.  Your written  notice is valid for six months
from the date of receipt at American Century.  Even if you plan to roll over the
amount you withdraw to another tax-deferred  account, the withholding rate still
applies to the withdrawn  amount unless we have received a written notice not to
withhold federal income tax within six months prior to the withdrawal.

    When you plan to  withdraw,  you may make your  election by  completing  our
Exchange/Redemption  form or an IRS Form W-4P. Call American  Century for either
form.  Your  written  election  is valid  for only six  months  from the date of
receipt at American Century. You may revoke your election at any time by sending
a written notice to us.

    Remember,  even if you elect not to have income tax withheld, you are liable
for paying income tax on the taxable  portion of your  withdrawal.  If you elect
not to have income tax withheld, you may be responsible for payment of estimated
tax. You may incur penalties  under the estimated tax rules if your  withholding
and estimated tax payments are not sufficient.


ANNUAL REPORT        SHARE CLASS AND RETIREMENT ACCOUNT INFORMATION      47


                            BACKGROUND INFORMATION

INVESTMENT PHILOSOPHY AND POLICIES

    The Twentieth Century Group offers 10 equity funds that invest in the stocks
of growing  companies,  both  domestically and  internationally.  The philosophy
behind these growth funds  focuses on three  important  principles.  First,  the
funds seek to own  successful  companies,  which we define as those with growing
earnings  and  revenues.  Second,  we attempt to keep the funds fully  invested,
regardless of short-term market activity. Experience has shown that market gains
can occur in  unpredictable  spurts and that  missing  those  opportunities  can
significantly  limit the  potential  for gain.  Third,  the funds are managed by
teams, rather than by one "star." We believe this allows us to make better, more
consistent management decisions.

    In addition to these principles, each fund has its own investment policies:

    INTERNATIONAL  GROWTH invests  primarily in the equity securities of foreign
companies  that exhibit  accelerating  growth.  These  companies will be located
primarily in developed countries. The fund will typically have significant share
price fluctuations.

    INTERNATIONAL  DISCOVERY  invests  primarily  in the  equity  securities  of
smaller foreign  companies that exhibit  accelerating  growth. Up to one-half of
these companies can be based in emerging market countries,  with the rest of the
portfolio  invested in smaller  companies in developed  economies.  The fund may
experience   greater  share  price   fluctuation   and   short-term   risk  than
International Growth.

    EMERGING MARKETS invests  primarily in the equity securities of companies in
emerging market countries that are considered by the investment  manager to have
prospects for appreciation.  The companies may be located or principally  traded
in emerging market countries, and also may derive a significant portion of their
business from emerging market countries.

    International   investing  involves  special  risks,   including   political
instability  and economic  risk.  Investing in emerging  markets may  accentuate
these risks.

HOW CURRENCY RETURNS AFFECT FUND PERFORMANCE

    For U.S. investors,  the total return from international stocks includes the
effects of currency  fluctuations--the movement of international currency values
in relation to the value of the U.S. dollar.  Currency  exchange rates come into
play when international  stock income,  gains and losses are converted into U.S.
dollars.

    Changing currency values may have a significant  impact on the total returns
of  international  stock  funds.  The value of the foreign  investments  held by
international  stock  funds may be reduced or  increased  by changes in currency
exchange rates. The dollar value of a foreign security generally  decreases when
the value of the dollar rises against the foreign currency in which the security
is denominated. This tended to be the case in 1997, when the dollar increased in
value against most major foreign  currencies.  (The weakened foreign  currencies
bought fewer dollars.) Conversely,  the dollar value of a foreign security tends
to increase  when the value of the dollar  falls  against the foreign  currency.
(The stronger  foreign  currency buys more  dollars.) In addition,  the value of
fund assets may be affected by losses and other expenses  incurred in converting
between various  currencies in order to purchase and sell foreign securities and
by currency  restrictions,  exchange control regulations,  currency devaluations
and political developments.

COMPARATIVE INDICES

    The  following  indices are used in the report to serve as fund  performance
comparisons. They are not investment products available for purchase.

    MORGAN STANLEY CAPITAL  INTERNATIONAL  (MSCI) has developed  several indices
that measure the  performance  of foreign stock  markets.  The best known is the
EUROPE, AUSTRALASIA,  FAR EAST INDEX (EAFE), which is a widely followed group of
stocks from 20  countries.  Within  this Index are two  narrower  indices,  MSCI
EUROPE which measures stock performance in 14 European countries, and MSCI JAPAN
which is restricted to Japanese stocks.

    The MORGAN STANLEY EMERGING MARKETS FREE INDEX represents the performance of
stocks in 26 emerging market countries in Europe,  Latin America and the Pacific
Basin.


48      BACKGROUND INFORMATION                 AMERICAN CENTURY INVESTMENTS


                                   GLOSSARY

RETURNS

   TOTAL  RETURN  figures show the overall  percentage  change in the value of a
hypothetical  investment  in  the  fund  and  assume  that  all  of  the  fund's
distributions are reinvested.

   AVERAGE ANNUAL RETURNS illustrate the annually  compounded returns that would
have produced the fund's cumulative total returns if the fund's  performance had
been  constant  over the  entire  period.  Average  annual  returns  smooth  out
variations in a fund's return;  they are not the same as  year-by-year  results.
For fiscal year-by-year total returns,  please refer to the Financial Highlights
on pages 38 through 42.

PORTFOLIO STATISTICS

   EXPENSE RATIO - the operating expenses of the fund, expressed as a percentage
of average net assets.  Shareholders pay an annual fee to the investment manager
for  investment  advisory  and  management  services.  The expenses and fees are
deducted from fund income, not from each shareholder account. (See Note 2 in the
Notes to Financial Statements.)

   PORTFOLIO TURNOVER - the percentage of a fund's investment  portfolio that is
replaced during a given time period, usually a year. Actively managed portfolios
tend to have higher  turnover than passively  managed  portfolios  such as index
funds.


ANNUAL REPORT                                           GLOSSARY       49



[american century logo]
American
Century(reg.sm)

P.O. BOX 419200 
KANSAS CITY, MISSOURI 
64141-6200

INVESTOR SERVICES:  
1-800-345-2021 OR 816-531-5575

AUTOMATED INFORMATION LINE:  
1-800-345-8765

TELECOMMUNICATIONS DEVICE FOR THE DEAF:   
1-800-634-4113 OR 816-444-3485

FAX: 816-340-7962

INTERNET: www.americancentury.com


AMERICAN CENTURY WORLD MUTUAL FUNDS, INC.


INVESTMENT MANAGER

AMERICAN CENTURY INVESTMENT MANAGEMENT, INC.

KANSAS CITY, MISSOURI


THIS REPORT AND THE FINANCIAL  STATEMENTS CONTAINED HEREIN ARE SUBMITTED FOR THE
GENERAL  INFORMATION  OF OUR  SHAREHOLDERS.  THE  REPORT IS NOT  AUTHORIZED  FOR
DISTRIBUTION  TO  PROSPECTIVE  INVESTORS  UNLESS  PRECEDED OR  ACCOMPANIED BY AN
EFFECTIVE PROSPECTUS.


(c)1998 AMERICAN CENTURY SERVICES CORPORATION
FUNDS DISTRIBUTOR, INC.


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