Group
- Cloud Kingdom Games28
- Cloven Fruit Games12
- Cloven Fruit Games, with Iron Crown Enterprises9
- Cloven Pine Games9
- CoGG259
- Code Monkey Publishing95
- Coin Flip Games12
- Cold Dinosaur Games9
- Colin Oneill1
- Colleen Green1
- College of DuPage1
- Colorway Game Labs15
- Columbia Games218
- Columbia Games Inc.25
- Columbia Gaming Group1
- Columbio Games3
- Comedy Rock Geek Enterprises2
- Comedy Rock Geek Enterprises 2
- ComedySportz Indianapolis2
- Comic Images22