The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 2020 (Initial release year) (1 member)
- 24 Caret Games (Developer) (1 member)
- 24 Caret Games (Publisher) (1 member)
- 2K Australia (Developer) (1 member)
- 2K Czech (Developer) (1 member)
- 2K Games (Developer) (1 member)
- 2K Games (Publisher) (21 members)
- 2K Marin (Developer) (2 members)
- 2K Sports (Publisher) (31 members)
- 2XL Games (Developer) (2 members)
- 2k Marin (Developer) (0 members)
- 345 Games (Publisher) (2 members)
- 38 Studios (Developer) (1 member)
- 3Division (Developer) (1 member)
- 49Games (Developer) (5 members)
- 4A Games (Developer) (1 member)
- 4J Studios (Developer) (2 members)
- 4hit (Publisher) (2 members)
- 4mm Games (Developer) (1 member)
- 505 Games (Publisher) (23 members)
- 5pb. (Developer) (22 members)
- 5pb. (Publisher) (32 members)
- 5pb. Games (Publisher) (1 member)
- 8bit Games (Developer) (1 member)
- 8floor (Publisher) (3 members)
- A.C.R.O.N.Y.M. Games & Eyerisk Studios (Developer) (1 member)
- A.C.R.O.N.Y.M. Games (Developer) (1 member)
- ACE Team (Developer) (3 members)
- AFL Live (Series) (2 members)
- Aabs (Developer) (1 member)
- Aabs (Publisher) (1 member)
- Abstraction Games (Developer) (3 members)
- Accel World (Series) (2 members)
- Access Games (Developer) (2 members)
- Accurate GETLLAR: On (Config) (0 members)
- Accurate LLVM DFMA: Off (Config) (1 member)
- Accurate PPU 128 reservations: Always Enabled (Config) (1 member)
- Accurate RSX reservation access: On (Config) (19 members)
- Accurate SPU DMA: On (Config) (2 members)
- Ace Combat (Series) (2 members)
- Acquire (Developer) (8 members)
- Acquire (Publisher) (7 members)
- Action (Genre) (426 members)
- Action role-playing (Genre) (77 members)
- Activision (Publisher) (126 members)
- Advanced Microcomputer Systems (Developer) (1 member)
- Adventure (Genre) (314 members)
- Adventure Time (Series) (3 members)
- Air Conflicts (Series) (3 members)
- Airtight Games (Developer) (3 members)