The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Armor (1 member)
- Blog posts (0 members)
- Browse (0 members)
- Candidates for deletion (0 members)
- Chemicals (7 members)
- Community (1 member)
- Consumables (3 members)
- Disambiguations (0 members)
- Documentation (2 members)
- Documentation templates (1 member)
- Electronics (10 members)
- Factions (8 members)
- General wiki templates (9 members)
- Gold/Silver (6 members)
- Hatnote templates with errors (0 members)
- Image license templates (13 members)
- Images (4 members)
- Infobox templates (13 members)
- Items (2 members)
- Maintenance (6 members)
- Materials (15 members)
- Media (2 members)
- Metals (12 members)
- Navbox templates (1 member)
- Notice templates (10 members)
- Pages using invalid self-closed HTML tags (7 members)
- Pages with broken file links (4 members)
- Quote templates (2 members)
- Screenshots (0 members)
- Sheltered 2 Wiki (6 members)
- Stubs (0 members)
- Template documentation (44 members)
- Templates (9 members)
- Unattributed files (0 members)
- Videos (0 members)
- Wiki skin images (2 members)