Closed in 2008
Founded in 1979 in California as On-Line Systems.
Renamed Sierra On-Line in 1982.
Changed name to Sierra Entertainment on February 19, 2002.
In 2008, ownership of Sierra was transferred to Activision and later closed down.
In 2014, Sierra should be re-activated, as the website now suggests.
It is known for Aces, City Building Series, Crash Bandicoot, Diablo, Dragon Slayer, Earthsiege, Empire Earth, F.E.A.R., Frogger series, Gabriel Knight, Geometry Wars, Gobliiins, Ground Control, Half-Life, Homeworld, King's Quest, Leisure Suit Larry, Lode Runner, Lords of the Realm, Manhunter, No One Lives Forever, Police Quest, Quest for Glory, Silpheed, Sorcerian, Spacequest, Spyro, Spyro the Dragon, SWAT, The Legend of Spyro, Thexder, Tribes, Ultima, Ultima: The Age of Darkness, You Don't Know Jack, Yserbius
Releases per year
|Mac OS Classic||73|
|Apple II E||41|