| Carter Cook | Developer | |
| Carter Games | Developer | |
| Cartesianfox | Developer | |
| Cartoon Animation Studios | DeveloperPublisher | |
| Cartoon Network | DeveloperPublisher | |
| Cartoon Network Games | Publisher | |
| Cartoon Network Studios | Publisher | |
| Cartoon Time | Publisher | |
| Cartrides | Developer | |
| Cartwheel Games | Developer | |
| Carztoen | Developer | |
| Casagrandi | Developer | |
| Casali brothers | Developer | |
| Casanis | Developer | |
| Casanova Games | Developer | |
| Cascade | DeveloperPublisher | |
| Cascade Games | Publisher | |
| Cascade Mountain Publishing | DeveloperPublisher | |
| Cascade Productions | Developer | |
| Cascadia Games | Developer | |
| Cascading Style Sheets | Developer | |
| Cascoly Software | DeveloperPublisher | |
| Case Donnella Games | Developer | |
| Case Western Reserve Univ. ECSE-CSDS 290 | Developer | |
| Case1 | Developer | |
| CasePortman | Developer | |
| Cases Computer Simulations | Publisher | |
| CaseusGames | Developer | |
| Casey Gatlin | Developer | |
| Casey Ramos | Developer | |
| Casey Shreve | Developer | |
| Casey Warrer | Developer | |
| CaseyBot | Developer | |
| CaseyDonnellanGames | Developer | |
| CaseyGrant | Developer | |
| CashThulhu | Developer | |
| Casiell | Developer | |
| Casio | DeveloperPublisher | |
| Casper Croes | Developer | |
| CasperCoboli | Developer | |
| Caspian Depression Games | Developer | |
| Cass Aleatory | Developer | |
| Casselwolf | Developer | |
| Cassie McQuater | Developer | |
| Cassie! | Developer | |
| Cassiopeia | Developer | |
| CastGames | Developer | |
| Castaway Entertainment | DeveloperPublisher | |
| Casterman | Publisher | |
| Castle & Pear Games | Developer | |