The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Full Control (Developer) (1 member)
- Full Control (Publisher) (1 member)
- Fun Labs (Developer) (9 members)
- Funbox Media (Publisher) (2 members)
- Funktronic Labs (Developer) (1 member)
- FuturLab (Developer) (1 member)
- FuturLab (Publisher) (1 member)
- G.Rev (Developer) (1 member)
- G.Rev (Publisher) (1 member)
- G.rev (Developer) (1 member)
- G1 Jockey (Series) (2 members)
- GN Software (Developer) (1 member)
- GN Software (Publisher) (1 member)
- Gaijin Entertainment (Developer) (7 members)
- Gaijin Entertainment (Publisher) (3 members)
- Gaijin Games (Developer) (1 member)
- GameMill Entertainment (Publisher) (2 members)
- Game Arts (Developer) (1 member)
- Game Republic (Developer) (8 members)
- Game Republic (Publisher) (1 member)