1979: Activision opens its doors as the first independent developer and distributor of entertainment software.

1981: Activision launches a series of multi-million selling Atari 2600 titles, including Kaboom! (1981), the Pitfall! series and River Raid (1982).

1983: Activision completes initial public offering becoming a leading international developer/publisher of video games for video game console systems.

1987: Activision purchases Infocom, the leading adventure game developer and producer. Infocom had introduced the first officially published version of Zork, in 1982 and subsequently released four text-adventures sequels and two spin-offs, Enchanter and Sorcerer.

1988: Activision changes name to Mediagenic and broadens focus to include business application software.