Activision was, in principle founded in 1979. However, on April 25, 1980, the “Fantastic Four” joined up as the first third-party software company for video games.
David Crane and Alan Miller left Atari August 1979 to start programming under the Activision name. Larry Kaplan and Bob Whitehead stayed behind until April 25th when Activision came out. Richard Muchmore was the venture capitalist and Jim Levy rounded the group as Activision’s CEO.
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