The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 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)
- Bionic Commando (Series) (3 members)
- BitComposer (Developer) (1 member)
- BitComposer Games (Publisher) (8 members)
- BitComposer Interactive (Developer) (1 member)
- Bizarre Creations (Developer) (3 members)
- Black Bean Games (Developer) (0 members)
- Black Bean Games (Publisher) (10 members)
- Black Forest Games (Developer) (2 members)
- Black Forest Games (Publisher) (1 member)
- Black Rock Studio (Developer) (2 members)
- Black Tower (Developer) (1 member)
- Blade Interactive (Developer) (1 member)
- BlazBlue (Series) (6 members)
- Blazing Angels (Series) (2 members)
- BlitWorks (Developer) (1 member)
- Blitz Arcade (Developer) (2 members)
- Blitz Games (Developer) (6 members)
- Blitz Games Studios (Developer) (1 member)
- Blizzard Entertainment (Developer) (1 member)
- Blizzard Entertainment (Publisher) (1 member)
- 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)