The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Abandon Ship (13 members)
- Abandon Ship Wiki (6 members)
- Candidates for deletion (1 member)
- Candidates for speedy deletion (0 members)
- Citation needed (0 members)
- Cleanup (0 members)
- Community (5 members)
- Copyright templates (12 members)
- Disambiguations (0 members)
- Documentation templates (50 members)
- Formatting templates (23 members)
- Front page sections (4 members)
- Hidden categories (0 members)
- Images (71 members)
- Images needing improvement (0 members)
- Infobox templates (1 member)
- Legal notices (3 members)
- Media (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)
- Quests (1 member)
- Ship (5 members)
- Stubs (5 members)
- Templates (17 members)
- Templates with bad documentation (0 members)
- Templates with no documentation (0 members)
- Unattributed files (0 members)
- User groups (14 members)
- Videos (0 members)
- Wiki maintenance (14 members)
- Wiki skin images (23 members)
- World (2 members)