The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Abilities (0 members)
- Abilitiy images (9 members)
- Achievement images (49 members)
- Achievements (51 members)
- Audio Logs (80 members)
- Candidates for deletion (1 member)
- Candidates for speedy deletion (0 members)
- Character images (84 members)
- Character statistics (9 members)
- Characters (4 members)
- Citation needed (0 members)
- Cleanup (0 members)
- Community (4 members)
- Copyright templates (10 members)
- DLC (0 members)
- Disambiguations (0 members)
- Documentation templates (4 members)
- Email images (50 members)
- Emails (70 members)
- Enemies (13 members)
- Enemy images (8 members)
- Formatting templates (20 members)
- Hidden categories (0 members)
- Humans (270 members)
- Icons (11 members)
- Images (19 members)
- Images needing improvement (0 members)
- Infobox templates (9 members)
- Infoboxes lacking images (247 members)
- Item images (51 members)
- Items (15 members)
- Legal notices (3 members)
- List formatting and function templates (1 member)
- Location images (54 members)
- Locations (66 members)
- Material icons (8 members)
- Mechanisms (4 members)
- Media (2 members)
- Navigation templates (9 members)
- Note images (63 members)
- Notes (127 members)
- Notice templates (14 members)
- Objective images (6 members)
- Objectives (29 members)
- Operator images (3 members)
- Operators (2 members)
- Pages to be merged (0 members)
- Pages to be moved (0 members)
- Pages with broken file links (2 members)
- Prey (17 members)