The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Bloober Team (Developer) (3 members)
- Bloober Team (Publisher) (1 member)
- Blue Castle Games (Developer) (5 members)
- Blue Isle Studios (Developer) (1 member)
- Blue Omega Entertainment (Developer) (1 member)
- Blue Tongue Entertainment (Developer) (1 member)
- Bluepoint Games (Developer) (5 members)
- Board game (Genre) (32 members)
- Boku no Natsuyasumi (Series) (2 members)
- Boolat Games (Developer) (1 member)
- Boolat Games (Publisher) (2 members)
- Borderlands (Series) (4 members)
- Borne Games (Developer) (1 member)
- Breakfall (Developer) (1 member)
- Breakfall (Publisher) (1 member)
- Breakout (Genre) (1 member)
- Broccoli (Developer) (1 member)
- Bugbear Entertainment (Developer) (1 member)
- Bulkypix (Publisher) (1 member)
- Bungie (Developer) (1 member)
- Bungie (Publisher) (1 member)
- Burnout (Series) (2 members)
- Buzz! (Series) (9 members)
- Buzz Monkey Software (Developer) (1 member)
- CCP Games (Developer) (1 member)
- CCP Games (Publisher) (1 member)
- CDV Software Entertainment (Publisher) (1 member)
- CI Games (Developer) (1 member)
- CI Games (Publisher) (1 member)
- Cabela's (Series) (11 members)
- Call of Duty (Series) (11 members)
- Call of Juarez (Series) (3 members)
- Camera input: PS Eye (Config) (3 members)
- Camera settings: Qt (Config) (3 members)
- Candygun Games (Developer) (2 members)
- Capcom (Developer) (33 members)
- Capcom (Publisher) (66 members)
- Capybara Games (Developer) (2 members)
- Capybara Games (Publisher) (1 member)
- Card game (Genre) (16 members)
- Castlevania (Series) (4 members)
- Casual Brothers (Developer) (1 member)
- Casual Brothers (Publisher) (1 member)
- Cattle Call (Developer) (1 member)
- Cauldron (Developer) (7 members)
- Cauldron HQ (Developer) (3 members)
- Cave (Developer) (1 member)
- Cavia (Developer) (3 members)
- Cellar Door Games (Developer) (1 member)
- Cellar Door Games (Publisher) (1 member)