1C Company
2K Games (Publishing label of Take-Two Interactive)
3DO (console manufacturer) (defunct)
505 Games
Acclaim Entertainment (defunct) - Now known as Acclaim Games
Accolade (Acquired by Atari née Infogrames, name retired)
Access Software (Acquired by Microsoft, sold to Take Two Interactive, renamed Indie Built, name retired)
Activision (Merged with Vivendi Games to form Activision Blizzard in July 2008, Part of Activision Blizzard as well)
Activision Blizzard
Aventurine SA
Agetec
Akella
Alchemist
Alten8
Aspyr Media
Atari (Acquired by Infogrames)
Atlus
Bandai Games (merged with Namco as Namco Bandai Games)
Banpresto (Acquired by Namco Bandai Games)
Bethesda Softworks
Big Fish Games
Blue Byte Software (Acquired by Ubisoft)
Boonty
Brøderbund (Acquired by Ubisoft, eventually sold to The Learning Company, no longer publishes video games)
Blizzard Entertainment (Part of Activision Blizzard as of July 2008)
Brash Entertainment (defunct)
Buka Entertainment (Acquired by 1C Company)
Bungie
Capcom
CD Projekt
Cdv Software Entertainment
Codemasters
Coleco (console manufacturer) (defunct)
Compedia
Conspiracy Entertainment
Crave Entertainment
Crystal Dynamics (Acquired by Eidos Interactive)
Data East (defunct)
Deep Silver
Destineer
Disney Interactive Studios
DreamCatcher Games (Acquired by JoWooD Productions)
Eidos Interactive (Acquired by SCi Entertainment then by Square Enix, now a brand for its developers for the company, also Square Enix will publish future Eidos games starting in 2010)
Electronic Arts
Empire Interactive (defunct)
Enix (Merged with Squaresoft as Square Enix)
Epyx (defunct)
Epic Games
First Star Software
Fox Interactive (acquired by Activision Blizzard)
Fresh Games (Publishing label for Eidos Interactive)
Funcom
Gamecock (Acquired by SouthPeak Interactive)
Global Star Software (Publishing label of Take-Two Interactive, name retired)
GOD Games (Acquired by Take-Two Interactive, name retired)
Got Game Entertainment
Gremlin Interactive (Acquired by Atari née Infogrames, name retired)
GT Interactive (Acquired by Atari née Infogrames)
Gust Corporation
Hasbro Interactive (Acquired by Atari née Infogrames)
Her Interactive
Hudson Soft (Acquired by Konami)
Ignition Entertainment
IllFonic
Imagic (defunct)
Infinity Ward
Infocom (Acquired by Activision, name retired)
Infogrames (Renamed Atari)
Interceptor Micros (defunct)
Interplay Entertainment
inXile Entertainment
Jaleco (no longer publishes video games)
JoWooD Productions
Kemco
Koei (merged into Tecmo Koei)
Konami
Legacy Interactive
Lighthouse Interactive (defunct)
Linux Game Publishing
LJN (Acquired by Acclaim Entertainment, defunct)
LucasArts
Mad Genius Software (defunct)
Majesco Entertainment
Mashiyu Entertainment America
Matrix Games
Mattel Interactive (console manufacturer) (Merged with The Learning Company)
Melbourne House (Acquired by Krome Studios)
Microïds
MicroIllusions (defunct)
MicroProse (Acquired by Hasbro Interactive, name retired)
Microsoft Game Studios
Midway Games (Assets acquired by Warner Bros. Interactive and THQ)
Mindscape, Inc. (No longer publishes video games)
MTV Games
Muse Software (defunct)
Myelin Media
Namco (Merged with Bandai Games as Namco Bandai Games)
Namco Bandai
NCsoft
New World Computing (purchased by 3DO)
Nexon
Nintendo
Ocean Software (Acquired by Atari née Infogrames, name retired)
Origin Systems (Acquired by Electronic Arts)
O3 Entertainment
Palladium Interactive (Acquired by The Learning Company)
Parroty Interactive (defunct), a division of Palladium Interactive
Paradox Interactive
Penguin Software (defunct)
Phantom EFX
PlayFirst
Playlogic Entertainment, Inc.
Play Ten Interactive
PopCap Games
Programma International (defunct)
Psygnosis (defunct)
Rare (Acquired by Microsoft Game Studios)
Red Storm Entertainment (Acquired by Ubisoft)
Rising Star Games
Rocket Science Games (defunct)
Rockstar Games (Currently a publishing label for Take-Two Interactive)
Sammy Studios (merged with Sega as Sega Sammy Holdings)
SCi Entertainment (Changed name to Eidos plc, acquired by Square Enix, name retired)
Sega (merged with Sammy Studios as Sega Sammy Holdings)
Sega Sammy Holdings
Shrapnel Games
Sierra Entertainment (Folded into Activision) (Defunct)
SNK Playmore
Sony Computer Entertainment
Sony Pictures Digital (mobile phone games)
SouthPeak Interactive
Spectrum HoloByte (Acquired by Hasbro Interactive)
Squaresoft (Merged with Enix to create Square Enix)
Square Electronic Arts (Owned by Square and Electronic Arts. Folded back into Square and changed to Square Enix)
Square Enix
Stardock
Strategic Simulations, Inc. ("SSI") (Acquired by Ubisoft, name retired)
Strategy First
Success
Sunsoft (Closed U.S. Offices, operates out of Japan)
Taito (Acquired by Square Enix)
Takara (Merged with Tomy to form Takara Tomy in March 2006)
Takara Tomy
Take-Two Interactive
TalonSoft (Acquired by Take-Two Interactive, name retired)
Taxan (No longer publishes video games)
Technōs Japan (defunct) (Assets acquired by Atlus)
Tecmo (merged into Tecmo Koei)
Tecmo Koei
Tengen (defunct)
The Learning Company (Merged with Mattel Interactive, no longer publishes video games)
THQ
Titus Software (defunct)
Tradewest (Acquired by Midway Games, name retired)
Treyarch
Tomy (Merged with Takara to form Takara Tomy in March 2006)
TopWare Interactive (Acquired by Zuxxez Entertainment)
TT Games (Merger of Giant Interactive and Traveller's Tales) (Acquired by Warner Bros. InteractiveUbisoft
Ultimate Play the Game (defunct)
Ultra Games (Publishing label for Konami, name retired)
US Gold (Acquired by Eidos Interactive)
Virgin Interactive (defunct)
Vivendi Games (Merged with Activision to form Activision Blizzard in July 2008)
Valusoft
Warner Bros. Interactive
Xseed Games
XS Games
Zuxxez Entertainment
Zoo Digital Publishing
