Companies
- City Interactive
- City State Entertainment
- Claymore Game Studios
- ClockStone Software
- Cloud Imperium Games
- CMON
- Coatsink
- Coatsink Software
- Code Mystics
- Codeglue
- Codemasters
- Coffee Stain North
- Coffee Stain Publishing
- Coffee Stain Studios
- Cognosphere
- Coldwood Interactive
- Colossal Order
- ConcernedApe
- Core Design
- Corsair
- Creative Assembly
- Criterion
- Criterion Games
- Critical Hit Games
- Crunching Koalas