| Castle Coven Gaming | Developer | |
| Castle Pixel | DeveloperPublisher | |
| Castle Thorn Software LLC | DeveloperPublisher | |
| Castleworks Gameware | Developer | |
| Casual Brothers Games | Developer | |
| Casual Game Design | Developer | |
| Casual Pixel | Developer | |
| Casual42 | Developer | |
| Casualgames.nu | Developer | |
| Cat And Nate | Developer | |
| Cat Daddy Games | Developer | |
| Cat Daddy Games LLC | Developer | |
| Cat Evans | Developer | |
| Cat Night | Developer | |
| Cat Nigiri | Developer | |
| Cat Tastrophe Games | Developer | |
| Cat Trap Studios | DeveloperPublisher | |
| Cat's Pro | DeveloperPublisher | |
| CatBaronAle | Developer | |
| CatBotCrew | Developer | |
| CatGazing | Developer | |
| CatInAJar | Developer | |
| CatJail Studios | Developer | |
| CatProgrammer_not | Developer | |
| CatShrine | Developer | |
| CatalinN1 | Developer | |
| Catalina | Publisher | |
| Catalope Games | Developer | |
| Catalyst | Developer | |
| Catalyst Coders (Bob Pape, Mark A Jones, Colin Tuck) | Developer | |
| Catalyst Coders (Tony Mack, Eddie, Ray Jones, Chris Edwards) | Developer | |
| Catalyst Coders (Tony Mack, Mark A Jones) | Developer | |
| CatandTonic | Developer | |
| Catapult Games | Developer | |
| Catastrophic Overload | Developer | |
| Catastrophically-CR | Developer | |
| Cataxis | Developer | |
| Catbarrel | Developer | |
| Catbell Games | Developer | |
| Catbox | Developer | |
| Catch All | Developer | |
| Catchweight Studio | Developer | |
| Cateia Games | Developer | |
| Catelt | Developer | |
| Catelyn | Developer | |
| CaterBlack_Studio | Developer | |
| Caterpillar Games | Developer | |
| CaterpillarDream | Developer | |
| Catfish Crew | Developer | |
| CatfishBlues Games | DeveloperPublisher | |