| C-EON Software Independent Computer Game Development Company: Developers of games such as Visual Impact. |
| Cactus Factory: Developer of games and software for Pocket PC. |
| Cannon Entertainment Web: Contains news and game information. Develops and publishes Cannon Adventure and the racing game Co-Pilot Riot. |
| Cascoly Software: Producers of strategy, trivia, and puzzle games. |
| Cauldron HQ: European game developer responsible for titles such as Quadrax, Spellcross, and Battle Isle 4. |
| Chris' Comics and CPU: Small company developing its own brand of computer games. |
| CITY Interactive: Developer and Publisher of such titles as Project Freedom, WWII: Pacific Heroes, and Wings of Honour; based in Warsaw, Poland. Offers game descriptions and screen shots, news, and company profile. |
| Clickteam S.A.R.L.: Developer of Klik and Play, The Games Factory, and IMSI Multimedia Fusion. |
| Coastal Amusements: Manufacturers of coin operated redemption and sports games for the family amusement centers. |
| CodeFire Entertainment: Offers contact information and registered users may obtain company information. |
| CogniToy, LLC: Developer of MindRover, robotic, puzzle, and cell phone games. Includes profile, description of games, news, and Java based games. |
| ColdFusion Game Development: A site dedicated to the development of DirectX games using Visual Basic. Download full source code as well other resources for writing your own games. |
| Conspiracy: Developers of Enclave. |
| Contested Ground Studios: Scottish roleplaying game developers. Home of a/state RPG. Discussion forums, game information, concept art, downloads and wallpaper. |
| Contraband Entertainment, Inc.: Develops games for console platforms. |
| Core Concepts: Developer of various puzzle games. |
| Coresoft Inc.: Develops for Sony Playstation, Sega, PC, and WAP. |
| Costik.com: Long time video game developer Greg Costikyan. Offers game information and some online play, links to published writings, and a personal section. |
| Covert Operations: [PC/Gameboy] (Scotland) Developer in the UK. |
| Creative Reality Media, Inc: Developers of the Martian Gothic game. Company information, news and affiliates. |
| The Collective: Southern California PC and console game developer whose games include Star Trek: DS9, Buffy, and Game of Life [Flash]. |
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