EXHIBIT 5.1

                 ROBINSON SILVERMAN PEARCE ARONSOHN & BERMAN LLP
                           1290 AVENUE OF THE AMERICAS
                            NEW YORK, NEW YORK 10104
                                 (212) 541-2000

                                  May 8, 2002

Activision, Inc.
3100 Ocean Park Boulevard
Santa Monica, California 90405

Ladies and Gentlemen:

     We refer to the Registration Statement on Form S-8 (the "Registration
Statement") to be filed by Activision, Inc., a Delaware corporation (the
"Company"), on or about the date hereof with the Securities and Exchange
Commission (the "Commission") in connection with the registration under the
Securities Act of 1933, as amended (the "Securities Act"), of 390,286 shares of
the Company's common stock, $.000001 par value per share (the "Common Stock"),
reserved for issuance pursuant to the terms of certain employee stock options
(the "Options").

     We are familiar with the Amended and Restated Certificate of Incorporation,
as amended, and the Amended and Restated By-laws of the Company and have
examined copies of the Options, copies of the resolutions adopted by the
Company's Board of Directors, and originals or copies, certified or otherwise
identified to our satisfaction, of such other documents, evidence of corporate
action, certificates and other instruments, and have made such other
investigations of law and fact, as we have deemed necessary or appropriate for
the purposes of this opinion.

     Based upon the foregoing, it is our opinion that the 390,286 shares of
Common Stock reserved for issuance pursuant to the terms of the Options
have been duly authorized and, when issued in accordance with the terms of the
Options and upon payment of the purchase price therefor, if any, provided
for any Common Stock issued pursuant to such Optoins, will be validly
issued, fully paid and non-assessable by the Company.


     We hereby consent to the use of this opinion in the Registration Statement.
In giving this consent, we do not thereby admit that we come within the category
of persons whose consent is required under Section 7 of the Securities Act or
the Rules and Regulations of the Commission thereunder.

                                 Very truly yours,



                                 /s/ Robinson Silverman Pearce
                                 Aronsohn & Berman LLP