The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Archimedes images (7 members)
- Bellafide images (7 members)
- Buildings (3 members)
- Candidates for deletion (2 members)
- Candidates for speedy deletion (0 members)
- Characters (6 members)
- Citation needed (0 members)
- Cleanup (0 members)
- Commanders (4 members)
- Community (4 members)
- Copyright templates (12 members)
- Developers (1 member)
- Disambiguations (0 members)
- Documentation templates (35 members)
- Enemies (1 member)
- Formatting templates (25 members)
- Fortifications (1 member)
- Front page sections (4 members)
- Game (4 members)
- Game World (2 members)
- Game promo images (1 member)
- Gamepedia Blocks (3 members)
- Gameplay (1 member)
- Hidden categories (0 members)
- Hopper images (10 members)
- Images (30 members)
- Images needing improvement (0 members)
- Infobox templates (5 members)
- Infoboxes lacking images (2 members)
- Legal notices (3 members)
- Media (2 members)
- Navigation Templates (2 members)
- Notice templates (13 members)
- Pages to be merged (0 members)
- Pages to be moved (0 members)
- Pages with broken file links (0 members)
- Pages with template loops (1 member)
- Strategy (1 member)
- Stubs (9 members)
- System (1 member)
- Template documentation (18 members)
- Templates (16 members)
- Templates with bad documentation (0 members)
- Templates with no documentation (0 members)
- The Quartermaster images (6 members)
- Tooth and Tail (17 members)
- Tooth and Tail Wiki (7 members)
- Traits (1 member)
- Unattributed files (0 members)
- Unit images (128 members)