The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- AyeWARE (Publisher) (1 member)
- B.B. Studio (Developer) (9 members)
- B.B Studio (Developer) (1 member)
- BBC Worldwide (Publisher) (1 member)
- BaKno Games (Developer) (1 member)
- BaKno Games (Publisher) (1 member)
- Backbone Entertainment (Developer) (15 members)
- Backbreaker (Series) (2 members)
- Bad Robot Interactive (Developer) (1 member)
- Badland Games (Publisher) (1 member)
- Badland games (Publisher) (1 member)
- Bakugan (Series) (2 members)
- Bandai Namco Games (Developer) (36 members)
- Bandai Namco Games (Publisher) (139 members)
- Banpresto (Developer) (4 members)
- BaseSon (Developer) (2 members)
- Batman: Arkham (Series) (4 members)
- Battlefield (Series) (6 members)
- BeXide (Developer) (1 member)
- BeXide Inc. (Developer) (1 member)
- Beat 'em up (Genre) (41 members)
- Beatshapers (Developer) (1 member)
- Beatshapers (Publisher) (1 member)
- Bedlam Games (Developer) (1 member)
- Bedtime Digital Games (Developer) (1 member)
- Beenox (Developer) (9 members)
- Behaviour Interactive (Developer) (7 members)
- Behaviour Interactive Chile (Developer) (1 member)
- Behaviour Santiago (Developer) (4 members)
- Ben 10 (Series) (4 members)
- Bento (Developer) (1 member)
- Bergsala Lightweight (Developer) (1 member)
- Bethesda Game Studios (Developer) (3 members)
- Bethesda Softworks (Publisher) (14 members)
- Bexide (Developer) (2 members)
- BiP Media (Developer) (2 members)
- BiP Media (Publisher) (1 member)
- Biart (Developer) (1 member)
- Big Ant Studios (Developer) (8 members)
- Big Ant Studios (Publisher) (3 members)
- Big Head Games (Developer) (1 member)
- Big Head Games (Publisher) (1 member)
- Big Huge Games (Developer) (1 member)
- Big Sandwich Games (Developer) (1 member)
- Big Sandwich Games (Publisher) (1 member)
- Bigben Interactive (Publisher) (21 members)
- Bimboosoft (Developer) (1 member)
- Bimboosoft (Publisher) (1 member)
- BioShock (Series) (3 members)
- BioWare (Developer) (6 members)