| Cliff J Ogden | Developer | |
| Cliff Johnson | DeveloperPublisher | |
| Cliff Lee CL | Developer | |
| Cliffhanger Productions | Developer | |
| CliffracerX | Developer | |
| Cliffside | Developer | |
| Climacus | Developer | |
| Climax | Developer | |
| Climax Brighton | Developer | |
| Climax Development | Developer | |
| Climax Entertainment | Developer | |
| Climax Graphics | Developer | |
| Climax Group | Developer | |
| Climax Solent | Developer | |
| Climax Studios | Developer | |
| Clinginglies | Developer | |
| Clip House | Developer | |
| ClipartDev | Developer | |
| Clipper | Developer | |
| Clipper Software | Developer | |
| Clive Brooker | Developer | |
| Clive Paul | Developer | |
| Clive Thompson | Developer | |
| Clive Townsend | Developer | |
| Clive Wilson | Developer | |
| Cloak and Dagger Games | Developer | |
| Cloaked Eye Software | Developer | |
| Cloaked Games | Developer | |
| CloakedBytes | Developer | |
| ClockStone | Developer | |
| Clockstone Studio | Developer | |
| Clockwize (Dean Hickingbottom) | Developer | |
| Clockwize (Gary Wood, Dean Hickingbottom) | Developer | |
| Clockwize (Keith A. Goodyer) | Developer | |
| Clockwize (Keith A. Goodyer, Dean Hickingbottom) | Developer | |
| Clockwize (Keith A. Goodyer, Dean Hickingbottom, David Bradley) | Developer | |
| Clockwize (Keith A. Goodyer, Dean Hickingbottom, David Bradley, David Whittaker) | Developer | |
| Clockwize (Keith A. Goodyer, Denis Hickie, Jaine Hickie) | Developer | |
| Clockwork Dragon Games | Developer | |
| Clockwork Games | Developer | |
| Clockwork Games Limited | Developer | |
| Clockwork Hippo | Developer | |
| Clockwork Pixels | Developer | |
| Clockwork Prince | Developer | |
| Clockwork Tortoise | Developer | |
| Clockwork bird | Developer | |
| CloneDeath | Developer | |
| Clorinthe | Developer | |
| Clotruad | Developer | |
| Cloud 9 Interactive | Developer | |
| Cloud Byte Studio | Developer | |
| Cloud Colony Games | Developer | |
| Cloud Gaming Studios | Developer | |
| Cloud Studios | Developer | |
| CloudColour | Developer | |
| CloudEra | Developer | |
| CloudNovel | Developer | |
| CloudOfTheStars | Developer | |
| CloudTheWolf | Developer | |
| Cloudburst Games | Developer | |
| Clouded Leopard Entertainment | DeveloperPublisher | |
| Cloudfinegames | Developer | |
| Cloudjinxed | Developer | |
| Cloudland Studios | Developer | |
| Cloudman19 | Developer | |
| Clouds Play Company | DeveloperPublisher | |
| Cloudtrail Islands | Developer | |
| Cloudwalkingames | Developer | |
| CloudzChow | Developer | |
| Clovelt | Developer | |
| Clover Studio | Developer | |
| CloverHare | Developer | |
| ClownParty | Developer | |
| Club Acclaim | Publisher | |
| Club del Videojuego UPV | Developer | |
| ClubTranscendia | Developer | |
| Clubguide Magazine[4] | Publisher | |
| ClumsyDog | Developer | |
| Clumsywise | Developer | |
| ClydeCreatorDisco | Developer | |
| Clément Duquesne | Developer | |
| CmoarStudio | Developer | |
| Co-Deuz Computer | Developer | |
| Co., Ltd. | DeveloperPublisher | |
| Co5monaut | DeveloperPublisher | |
| CoPokBl | Developer | |
| Coagvla | Developer | |
| Coasternerd | Developer | |
| Coatline | Developer | |
| Coatsink | DeveloperPublisher | |
| CobGoblin | Developer | |
| Cobertos | Developer | |
| Cobra Devs | Developer | |
| Cobra Soft | DeveloperPublisher | |
| Cobra Team | Publisher | |
| Cobrasoft | DeveloperPublisher | |
| Coby | Developer | |
| Cobysoft Co. | Developer | |
| Cocayeenum | Developer | |
| Cocco | Developer | |
| Cockhole | Developer | |
| Cockinator | Developer | |
| Cockroach Inc. | Developer | |
| Cocktail Soft | DeveloperPublisher | |
| Cocktail Software | Publisher | |
| CocoaStudios | Developer | |
| Cococucumber | DeveloperPublisher | |
| Coconut Island | Developer | |
| Coconut Island Games | DeveloperPublisher | |
| CoconutBun | Developer | |
| Coconuts Japan | DeveloperPublisher | |
| Coconuts Japan (JP) | Publisher | |
| Coconuts Japan Entertainment | DeveloperPublisher | |
| Coconuts Japan JP | Publisher | |
| Coconuts JapanJP | Publisher | |
| Coda | Developer | |
| Code Bastards Studio | Developer | |
| Code Clay | Developer | |
| Code Drifters | Developer | |
| Code Drip | Developer | |
| Code Fusion | Developer | |
| Code Headquarters | Publisher | |
| Code Horizon | Publisher | |
| Code Junkies Studios | Developer | |
| Code Masters | Publisher | |
| Code Monkey | Developer | |
| Code Monkeys | Developer | |
| Code Monkeys Ltd. | Developer | |
| Code Mystics | DeveloperPublisher | |
| Code Raccoons | Developer | |
| Code Red Game Studio | Developer | |
| Code To Go | Developer | |
| Code Wakers | Developer | |
| Code-Monkeys | Publisher | |
| CodeAvarice | Developer | |
| CodeBehinadaCamera | Developer | |
| CodeChomper | Developer | |
| CodeFire | Developer | |
| CodeGnat | Developer | |
| CodeGoons | Developer | |
| CodeKnack | Developer | |
| CodeManu | Developer | |
| CodeModeller | Developer | |
| CodeMonkeyZero | Developer | |
| CodeParade | Developer | |
| CodeWithShubh | Developer | |
| Codeer | Developer | |
| Codeglue | Developer | |
| Codeless Man Games | Developer | |
| Codeless Team | Developer | |