Companies
- City Connection
- City Interactive
- Claymore Game Studios
- Cloud Imperium Games
- Clover Studio
- Coal Supper
- Coatsink Software
- Code Mystics
- Codemasters
- Coffee Stain Publishing
- Coffee Stain Studios
- Cognosphere
- Coin Crew Games
- Color Gray Games
- Colossal Order
- Compile Heart
- Complex Games Inc.
- Compulsion Games
- Computer Artworks
- ConcernedApe
- Core Design
- Corsair
- Crazy Viking Studios
- Creative Assembly
- Creative Business Unit III