The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Acclaim Entertainment (1 member)
- Acpc (4 members)
- Activision (89 members)
- Ak tronic Software & Services (2 members)
- AlphaQuadrant (1 member)
- Alternative (1 member)
- American Game Cartridges Inc. (1 member)
- Amiga (1 member)
- Amstrad CPC (4 members)
- And (16 members)
- Android (16 members)
- Antstream (2 members)
- Apple II/GS (1 member)
- Apple Mac (12 members)
- Apple iPad (20 members)
- Apple iPhone (23 members)
- Apple tvOS (3 members)
- Arcade (8 members)
- Arcade Lab (1 member)
- Aspyr Media, Inc (4 members)
- Astragon Software (1 member)
- Atari 2600 (2 members)
- Atari 7800 (2 members)
- Atari Games (11 members)
- Atari Lynx (1 member)
- Atari ST (1 member)
- Atarist (1 member)
- Atlantis (3 members)
- Atlus (1 member)
- BREW (1 member)
- Basilicom (1 member)
- Bberry (1 member)
- Beam Software (1 member)
- Blackberry (1 member)
- Blacknut (1 member)
- Brew (1 member)
- Bubble Bus (1 member)
- Buka Entertainment (1 member)
- C64 (19 members)
- CDG (2 members)
- Caltron Industries Inc (1 member)
- Caltron Industries Inc. (1 member)
- Cancelled (1 member)
- Capital Software (1 member)
- CarNGun Private Limited (2 members)
- Cocoplay Limited (3 members)
- Codemasters (2 members)
- Coffee-Powered Games (2 members)
- Color Dreams (1 member)
- Commodore 64 (19 members)