Group
- Cincinnati arsenal gaming 1
- Circle City Con1
- Circle City of Death1
- Corvus Belli S.L.L.1
- Cosplayers United Against Harassment1
- Crit This!1
- Cyberia Ltd.1
- Cycorp1
- Cylindrical Head Games1
- D20 Burlesque1
- D20 Hobbies1
- DMNotebook1
- Design Thingies1
- Discover International Games1
- Dracolich Fantasy Art1
- DriveThruRPG.com1
- Drunk and Ugly1
- Drunk and Ugly Games LLC1
- ESG Labs1
- Earthbound TimeLords1