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Epyx, Inc. was a computer game developer and publisher in the late 1970s and entire 1980s' game console and home computer arena. The company was founded under the name Automated Simulations by Jim Connelley and Jon Freeman.

Epyx (then Automated Simulations) was founded in 1978 as a vehicle for publishing Freeman and Connelley's first game in BASIC, Starfleet Orion for the Commodore PET. Their company quickly started developing games for other popular home computer ranges of the era, such as the Apple II family, the TRS-80 series, the Atari 400/800 and the Commodore 64.

In Europe, the British home computer game company U.S. Gold published Epyx' games for the C64, and also ported many of the games to other major European platforms such as the ZX Spectrum and Amstrad CPC range.

The Olympic games series, including Summer Games seen here on the Commodore 64, was one of Epyx's best selling franchises for many years.

Among Epyx' best known titles are the Summer Games and Winter Games series (later also including California Games and World Games), the Temple of Apshai games, Jumpman, Impossible Mission, and the "Computer Activity Toys" licenses of Hot Wheels, GI Joe and Barbie.

For the bestselling Commodore 64, Epyx made the FastLoad cartridge which enabled a fivefold speedup of floppy disk drive accesses through Commodore's very slow "serial IEEE-488" interface. Additionally, the FastLoad featured convenient disk access commands (for directory listings and program loads/saves, etc.), and a disk editor—a hacking tool allowing for direct low-level access to floppy disks.

Epyx also developed a handheld game system called the Handy. Unable to continue due to high costs, it was sold to Atari. Atari then renamed and sold it as the Lynx.

In 1987, Epyx faced an important infringement lawsuit from Data East USA regarding the Epyx's Commodore 64 game World Karate Championship. Data East thought the whole game, and particularly the referee in it, looked too much like its 1984 arcade game Karate Champ. Data East won the lawsuit and 9th Circuit US District Court Judge William Ingram ordered Epyx to recall all copies of World Karate Championship from store shelves. But Epyx appealed the case to the US Federal Court, who reversed the judgement and ruled in favor of Epyx, stating that copyright protection did not extend to the idea of a Karate game, but specific artistic choices not dicated by that idea. The court noted that a "17.5 year-old boy" could see clear differences between the elements of each game actually subject to copyright.

In 1989, Epyx filed for Chapter 11 bankruptcy protection. According to Stephen Landrum, a long-time programmer at Epyx, the company went bankrupt "because it never really understood why it had been successful in the past, and then decided to branch out in a lot of directions, all of which turned out to be failures."^[1]

At this time, they moved to a smaller office in downtown Redwood City and laid off nearly everyone. Epyx still developed games, but gave up their publishing rights and all the rights to the handheld game console they were developing to Atari (the company they owed most of the money to), eventually becoming the Atari Lynx. Epyx eventually came out of bankruptcy, but in 1993, with 8 employees left, they decided just to sell the rest of the company off. Bridgestone Media Group eventually got the rights to everything else Epyx had, only Peter Engelbrite took the job offers issued to these 8 employees.

In 2006, British publisher System 3 announced it has acquired Epyx's assets to release games such as California Games and Impossible Mission for Nintendo DS, Sony PSP and Wii in 2007.

• Barbie (for Commodore 64) (1984)
• 4x4 Off-Road Racing (1988)
• Axe of Rage (aka Barbarian II: Dungeons of Drax) (1988)
• Ballblazer (1984)
• Battle Bugs (1994)
• Blue Lightning (1989)
• Break Dance (1984)
• Boulder Dash Construction Kit (1986)
• California Games (1987)
• California Games II (1990)
• Championship Wrestling (1986)
• Chip's Challenge (1989)
• Chipwits (1984)
• Crush, Crumble and Chomp! (1981)
• Death Sword (aka Barbarian: The Ultimate Warrior) (1987)
• Destroyer (1986)
• Dunjonquest: Morloc's Tower (1979)
• Dunjonquest: The Datestones of Ryn (1979)
• Final Assault (1987)
• G.I. Joe: A Real American Hero (1985)
• The Games: Summer Edition (1988)
• The Games: Winter Edition (1988)
• Gates of Zendocon (1989)
• Gateway to Apshai (1983)
• Impossible Mission (1983)
• Impossible Mission II (1988)
• Jabbertalky (1982)
• Jumpman (1983)
• Jumpman Junior (1983)
• Koronis Rift (1985)
• L.A. Crackdown (1988)
• Mind-Roll (1988)
• Morloc's Tower (1979)
• The Movie Monster Game (1986)
• Oil Barons (1983)
• Omnicron Conspiracy (1989)
• Pitstop (1983)
• Pitstop II (1984)
• Project Neptune (1989)
• Purple Saturn Day (1989)
• Puzzle Panic (1984)
• Rad Warrior (1986)
• Rescue at Rigel (1980)
• Revenge of Defender (1988)
• Rogue: The Adventure Game (1983)
• Showstrike (1991)
• Silicon Warrior (1984)
• Space Station Oblivion (1987)
• Spiderbot (1988)
• Star Warrior (1981)
• Street Sports Basketball (1987)
• Street Sports Soccer (1988)
• Sub Battle Simulator (1987)
• Summer Games (1984)
• Summer Games II (1985)
• Super Cycle (1986)
• Sword of Fargoal (1982)
• Temple of Apshai Trilogy (1985)
  • Gateway to Apshai
  • Temple of Apshai (1980)
    • Upper Reaches of Apshai
    • Curse of Ra
  • Hellfire Warrior
• Winter Games (1985)
• World Games (1986)
• World Karate Championship (1986)
• Zarlor Mercenary (1990)

1. ^ Interview with Stephn Landrum from The Unofficial Epyx & SummerGames Homepage, with a timeline of Epyx's history

• Epyx profile on MobyGames
• "An Epyx Tale" – An in-depth history of Epyx
• History of Epyx – A brief history of the company
• Epyx history and game list – GOTCHA on GameSpy.
• Epyx at World of Spectrum