The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Achievements and Trophies (17 members)
- Blue Folders (30 members)
- Camcorder Notes (31 members)
- Characters (31 members)
- Community (4 members)
- Content templates (3 members)
- Copyright templates (10 members)
- Documentation templates (17 members)
- Formatting templates (22 members)
- Front page content (17 members)
- Games (6 members)
- Help (4 members)
- Images (75 members)
- Infobox templates (0 members)
- Items (3 members)
- Legal notices (3 members)
- Locations (2 members)
- NL Translation (42 members)
- Notice templates (10 members)
- Outlast (11 members)
- Outlast 2 (11 members)
- Outlast II (10 members)
- Outlast Wiki (20 members)
- Pages with broken file links (3 members)
- Templates (18 members)
- Templates with bad documentation (0 members)
- Templates with no documentation (0 members)
- Trophies (1 member)
- User groups (8 members)
- Whistleblower (15 members)
- Wiki maintenance (2 members)