FMR CORP
SC 13D/A, 1994-06-23
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SCHEDULE 13D

Amendment No. 11
Sierra On-Line, Inc.
common stock 
Cusip # 826409104
Filing Fee: No


Cusip # 826409104
Item 1:	Reporting Person - FMR Corp. - (Tax ID:  04-2507163)
Item 4:	PF
Item 6:	Commonwealth of Massachusetts
Item 7:	43,900
Item 8:	None
Item 9:	869,227
Item 10:	None
Item 11:	869,227
Item 13:	11.41%
Item 14:	HC


PREAMBLE


	The Schedule 13D, dated May 8, 1992, and amended June 8, 1992, July 8, 
1992, September 24, 1992, October 1, 1992, October 29, 1992, November 13, 
1993, May 12, 1993, September 13, 1993, March 28, 1994, and June 2, 1994, 
filed by FMR Corp. ("FMR") with respect to the common stock, $0.01 par value 
per shares (the "Shares") of Sierra On-Line, Inc. (the "Company") is hereby 
amended as set forth below.  The shares to which it relates are owned by three 
funds managed by Fidelity Management & Research Company and eight pension 
funds managed by Fidelity Management Trust Company.

Item 1.	Security and Issuer.

Item 2.	Identity and Background.

	Item 2 is amended as follows:

	This statement is being filed by FMR Corp., a Massachusetts Corporation 
("FMR").  FMR is a holding company one of whose principal assets is the 
capital stock of a wholly-owned subsidiary, Fidelity Management & Research 
Company ("Fidelity"), which is also a Massachusetts corporation.  Fidelity is 
an investment adviser which is registered under Section 203 of the Investment 
Advisers Act of 1940 and which provides investment advisory services to a 
large number of investment companies which are registered under Section 8 of 
the Investment Company Act of 1940 (the "Fidelity Funds").  Various directly 
or indirectly held subsidiaries of FMR are also engaged in investment 
management, venture capital assets management, securities brokerage, transfer 
and shareholder servicing and real estate development.  The principal offices 
of FMR and Fidelity are located at 82 Devonshire Street, Boston, Massachusetts 
02109.

	Edward C. Johnson 3d owns 34.0% of the outstanding voting common stock 
of FMR.  Mr. Johnson 3d is Chairman of FMR Corp.  The business address and 
principal occupation of Mr. Johnson 3d is set forth in Schedule A hereto.

	The shares to which this statement relates are owned directly by four of 
the Fidelity Funds, and eight pension funds managed by FMTC.

	The name, residence or business address, principal occupation or 
employment and citizenship of each of the executive officers and directors of 
FMR are set forth in Schedule A hereto.

	Within the past five years, none of the persons named in this Item 2 or 
listed on Schedule A has been convicted in any criminal proceeding (excluding 
traffic violations or similar misdemeanors) or has been a party to any civil 
proceeding and as a result thereof was or is subject to any judgment, decree 
or final order enjoining future violations of, or prohibiting or mandating 
activities subject to, federal or state securities laws or finding any 
violations within respect to such laws.

Item 3.	Source and Amount of Funds or Other Considerations.

	Item 3 is amended as follows:

	The Fidelity Funds which own or owned shares purchased in the aggregate 
1,352,027 shares for cash in the amount of approximately $23,326,341 , 
including brokerage commissions.  Proceeds from 526,700 shares sold aggregated 
approximately $10,355,618 .  The Funds used their own assets in making such 
purchase and no part of the purchase price is represented by borrowed funds.  
The attached Schedule B sets forth shares purchased and/or sold since February 
25, 1994.

	The pension funds of FMTC which own or owned shares purchased in the 
aggregate 264,150 shares for cash in the amount of approximately$4,941,093 , 
including brokerage commissions.  Proceeds from 220,250 shares sold aggregated 
approximately $2,933,839 .  The pension funds used, their own assets in making 
such purchases and no part of the purchase price is represented by borrowed 
funds.  The attached Schedule B sets forth shares purchased and/or sold since 
February 25, 1994.

Item 4.	Purpose of Transaction.

Item 5.	Interest in Securities of Issuer.

	Item 5 is amended as follows:

	Although Item 5 assumes that FMR, Fidelity, and FMTC, beneficially own 
all 869,227  shares, reference is made to Item 2 for a disclaimer of 
beneficial ownership with respect to the securities which are "beneficially 
owned" by the other corporations.

	(a)	FMR beneficially owns, through Fidelity, as investment adviser to 
the Fidelity Funds, 825,327 shares, or approximately 10.84% of the outstanding 
shares of the Company and through FMTC, 43,900 shares, or approximately 0.58% 
of the outstanding shares of the Company.  The number of shares held by the 
Fidelity Funds includes 138,928 shares of common stock resulting from the 
assumed conversion of $3,890,000 principal amount of the 6.75% convertible 
debenture (35.714 shares of common stock for each $1,000 principal amount of 
the debenture).  Neither FMR, Fidelity, FMTC, nor any of its affiliates nor, 
to the best knowledge of FMR, any of the persons named in Schedule A hereto, 
beneficially owns any other shares.  The combined holdings of FMR, Fidelity, 
and FMTC, are 869,227 shares, or approximately 11.41% of the outstanding 
shares of the Company.

	(b)	FMR, through its control of Fidelity, investment adviser to the 
Fidelity Funds, and the Funds each has sole power to dispose of the shares.  
Neither FMR nor Mr. Johnson has the sole power to vote or direct the voting of 
the 825,327 shares owned directly by the Fidelity Funds, which power resides 
with the Funds' Boards of Trustees.  Fidelity carries out the voting of the 
shares under written guidelines established by the Funds' Boards of Trustees.  
FMTC has sole voting and dispositive power over 43,900 shares held by the 
pension funds.  

	(c)	Except as set forth in Schedule B, neither FMR, or any of its 
affiliates, nor, to the best knowledge of FMR, any of the persons named in 
Schedule A hereto has effected any transaction in shares during the past sixty 
(60) days.



Item 6.	Contract, Arrangements, Understandings or Relationships With 
Respect to Securities of the 	Issuer.

	This statement speaks as of its date, and no inference should be drawn 
that no change has occurred in the facts set forth herein after the date 
hereof.

Item 7.	Material to be Filed as Exhibits.

	Not applicable.

Signature

	After reasonable inquiry and to the best of my knowledge and belief, I 
certify that the information set forth in this statement is true, complete and 
correct.

						FMR Corp.



Date:	June 23, 1994				By:	/s/Arthur S. Loring 		
									Arthur S. Loring
							Vice President-Legal



Schedule A

	The name and present principal occupation or employment of each 
executive officer and director of FMR Corp. are set forth below.  The business 
address of each person is 82 Devonshire Street, Boston, Massachusetts 02109, 
and the address of the corporation or organization in which such employment is 
conducted is the same as his business address.  All of the persons listed 
below are U.S. citizens.

POSITION WITH

									PRINCIPAL
NAME					FMR CORP.			OCCUPATION

Edward C. Johnson 3d			President, Director,		Chairman of 
the Board
					CEO, Chairman &		and CEO, FMR
					Mng. Director

J. Gary Burkhead				Director				President-
Fidelity

Caleb Loring, Jr.				Director, Mng. Director		Director, 
FMR
	
James C. Curvey				Director, Sr. V.P.			Sr. 
V.P., FMR

William L. Byrnes			Vice Chairman,			Vice Chairman, FIL
					Director & Mng. Director

Robert C. Pozen				Sr. V.P. & Gen'l Counsel		Sr. 
V.P. & Gen'l Counsel
									FMR

Mark Peterson				Exec., V.P.-Management		Exec., V.P.-
Managmeent
					Resources			Resources, FMR

Denis McCarthy				Sr. Vice Pres. - Administration	Vice 
Pres., Chief
					Chief Financial Officer		Financial Officer, 
FMR



SCHEDULE B


SIERRA ON-LINE, INC.

Three Fidelity Funds sold shares since April 13, 1994 at the dates and at the 
prices set forth below.  The transactions were made for cash in open market 
transactions or with other investment companies with the same or an affiliated 
investment advisor.

	DATE	SHARES	PRICE

	05-17-94	10,000	$19.63
	05-18-94	10,000	20.75
	06-13-94	35,000	18.88
	06-14-94	5,000	18.63
	06-15-94	60,000	18.38
	



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