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                                                                    Exhibit 99.1






                         Contacts:     Maryanne Lataif
                                       Activision, Inc,
                                       Vice President, Corporate Communications
                                       (310) 255-2704
                                       mlataif@activision.com

                                       Morgen-Walke Associates
                                       Andrea Kaimowitz/Katherine Mittelbusher
                                       (212) 850-5600
                                       Press: Sheryl Seapy/Amanda Christensen
                                       (415) 296-7383

                                       Michelle Dominguez
                                       Expert Software
                                       (305) 569-1310
                                       michelle_dominguez@expertsw.com

FOR IMMEDIATE RELEASE

                      ACTIVISION TO PAY FOR EXPERT SOFTWARE
                              ACQUISITION WITH CASH

Santa Monica, CA., Coral Gables, FLA. -- April 21, 1999 - Activision, Inc.
(Nasdaq: ATVI) and Expert Software (Nasdaq: XPRT) jointly announced today that
in connection with their previously announced pending merger transaction, the
parties have amended the merger arrangement and Activision will now pay the
merger consideration of $2.65 per Expert share solely in cash.

"By finalizing the merger consideration in cash, Activision will be able to
complete the transaction more efficiently and realize the benefits of the merger
sooner," states Ron Doornink, president of Activision, Inc.

Expert Software, Inc. (Nasdaq: XPRT) is a leading developer and publisher of
high-quality, value-priced software. The Company specializes in sophisticated
yet easy-to-use programs addressing a broad array of everyday consumer
interests, including 


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entertainment, education, lifestyle, productivity and small office/home office.
Expert Software can be found on the World Wide Web at 
http://www.expertsoftware.com.

Headquartered in Santa Monica, California, Activision, Inc. is a leading
worldwide developer, publisher and distributor of interactive entertainment
software for personal computers and advanced console game systems such as the
PlayStation game console and Nintendo 64. Founded in 1979, Activision posted
revenues of $370 million for the calendar year ended December 31, 1998.

Activision maintains publishing and development operations in the US, Canada,
the United Kingdom, France, Germany, Japan and Australia, and distribution
subsidiaries in the United Kingdom, Germany, The Netherlands and Belgium. More
information about Activision and its products can be found on the company's
World Wide Web site which is located at http://www.activision.com.


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The statements contained in this release that are not historical facts are
"forward-looking statements." The companies caution readers of this press
release that a number of important factors could cause either Expert's or
Activision's actual future results to differ materially from those expressed in
any such forward-looking statements. These important factors, and other factors
that could affect Activision and Expert, are described in Activision's Annual
Report on Form 10-K for the fiscal year ended March 31, 1998, and Expert's Form
10K and quarterly reports on Form 10-Q, which have been filed with the US
Security and Exchange Commission. Readers of this press release are referred to
such filings.