The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Resolution scale threshold (Config) (40 members)
- Reverb Publishing (Publisher) (2 members)
- Reverb Triple XP (Publisher) (1 member)
- Reverge Labs (Developer) (1 member)
- Rhino Studios (Developer) (1 member)
- Rhythm (Genre) (104 members)
- Ridge Racer (Series) (2 members)
- Right Square Bracket Left Square Bracket (Developer) (1 member)
- Right Square Bracket Left Square Bracket (Publisher) (1 member)
- Ripstone (Developer) (1 member)
- Ripstone (Publisher) (4 members)
- Risen (Series) (2 members)
- Rising Star Games (Publisher) (5 members)
- Risk (Series) (2 members)
- Robomodo (Developer) (4 members)
- Rock Band (Series) (12 members)
- Rockin' Android (Publisher) (1 member)
- Rocksmith (Series) (2 members)
- Rockstar Games (Developer) (8 members)
- Rockstar Games (Publisher) (9 members)