The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Achievements (7 members)
- Advanced editing (17 members)
- Advanced help (19 members)
- AutoUnsigned template used incorrectly (0 members)
- Automation (5 members)
- Basic editing (3 members)
- BoilerRoom manual (12 members)
- Bracket templates (4 members)
- Candidates for deletion (0 members)
- Candidates for speedy deletion (1 member)
- Cargo (4 members)
- Category extensions (1 member)
- Character-substitution templates (1 member)
- Citation needed (0 members)
- Cleanup (0 members)
- Community (13 members)
- Conditional templates (1 member)
- Copyright templates (10 members)
- Curse (3 members)
- Custom Gamepedia extensions (18 members)
- DPL3 (21 members)
- DPL tracking categories (6 members)
- Disambiguations (6 members)
- Documentation modules (1 member)
- Documentation templates (7 members)
- Editing (16 members)
- Editing/ja (2 members)
- En (0 members)
- En-3 (0 members)
- En-N (0 members)
- Example images (108 members)
- Examples (36 members)
- Extension styling considerations (3 members)
- Extensions (123 members)
- Footer navigation templates (4 members)
- Formatting templates (47 members)
- Fr (0 members)
- Fr-1 (0 members)
- Front page sections (4 members)
- Front page sections/ja (4 members)
- Gamepedia (24 members)
- Gamepedia/ja (2 members)
- Gamepedia Help Wiki (18 members)
- Gamepedia Help Wiki/ja (2 members)
- Gamepedia Help Wiki in Georgian (0 members)
- Gamepedia Help Wiki in other languages (3 members)
- Gamepedia announcements (13 members)
- Gamepedia images (1 member)
- Gamepedia policies (8 members)
- Gamepedia policies/ja (1 member)