The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Articles in need of expansion (21 members)
- Articles in need of pictures (10 members)
- Articles in need of updating (20 members)
- Articles missing a crafting page (19 members)
- Assembly Crafting (12 members)
- Candidates for deletion (1 member)
- Candidates for speedy deletion (0 members)
- Cannons (Procedural) (2 members)
- Citation needed (0 members)
- Civilizations (2 members)
- Cleanup (0 members)
- Closed Alpha Patch (10 members)
- Closed Beta Patch (26 members)
- Clothing images (3 members)
- Codex (178 members)
- Community (4 members)
- Complete Codex Entries (115 members)
- Cooking (2 members)
- Copyright templates (13 members)
- Craftable (44 members)
- Crafting (2 members)
- Crafting Components (3 members)
- Crafting pages (53 members)
- Culture (2 members)
- DLC (3 members)
- Decoration (5 members)
- Disambiguations (0 members)
- Documentation templates (73 members)
- Engine (2 members)
- Engines (Procedural) (6 members)
- Environment (19 members)
- Featured images (11 members)
- First Aid (1 member)
- Flight Instruments (1 member)
- Formatting templates (30 members)
- Front page sections (3 members)
- Furniture (1 member)
- Game UI (10 members)
- Gameplay (6 members)
- Guides (7 members)
- Head (56 members)
- Helms (1 member)
- Icon Templates (1 member)
- Icons (5 members)
- Images (9 members)
- Images in need of updating (11 members)
- Images needing improvement (0 members)
- Incomplete Codex Entries (60 members)
- Infobox icons (82 members)
- Infobox templates (7 members)