Exhibit 5.1



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

                          FACSIMILE: (212) 541-4630



                              February 2, 2000


Activision, Inc.
3100 Ocean Park Blvd.
Santa Monica, CA  90405


      Re:  Activision, Inc.
           Registration Statement on Form S-3

Ladies and Gentlemen:

      We refer to the Registration Statement on Form S-3 (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 "Act"), with respect to 77,031 shares
of the Company's common stock, par value $.000001 per share (the "Common
Stock") held by certain of the Company's stockholders.

      We are familiar with the Amended and Restated Certificate of
Incorporation, as amended, and the By-laws of the Company and have examined
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:

      (a)  The Company has been duly incorporated and is validly existing
under the laws of the State of Delaware.

      (b)  The 77,031 shares of Common Stock being registered for the account
of certain of the Company's stockholders have been duly authorized and are
validly issued, fully paid and nonassessable.

      We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the use of our name wherever appearing in such
Registration Statement, including the Prospectus consisting a part thereof,
and any amendment thereto.  In giving this consent, we do not thereby admit
that we are in the category of persons whose consent is required under
Section 7 of the Act, or the Rules and Regulations of the Commission
thereunder.

                     Very truly yours,

                     /s/ Robinson Silverman Pearce
                          Aronsohn & Berman LLP