The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Raw assets (7 members)
- Real world (9 members)
- Redirect templates (1 member)
- Renders (2 members)
- Root (4 members)
- Scenarios (0 members)
- Science (1 member)
- Screenshots (2 members)
- Screenshots by subject (4 members)
- Scribunto modules with errors (0 members)
- Ships (3 members)
- Society and culture (1 member)
- Species (4 members)
- Species by era (2 members)
- Sprites (2 members)
- Sprites by subject (4 members)
- Star systems (1 member)
- Story (2 members)
- Stubs (16 members)
- Technology (4 members)
- TemplateStyles stylesheets with errors (0 members)
- Templates (26 members)
- Templates with broken file links (0 members)
- Terminal images (4 members)
- Transportation (2 members)
- Trilogy characters (9 members)
- Trilogy documents (1 member)
- Trilogy enemies (3 members)
- Trilogy games (3 members)
- Trilogy locations (4 members)
- Trilogy species (6 members)
- Trilogy story (2 members)
- Trilogy weapons (9 members)
- URL-linked files (0 members)
- URL-linked images (0 members)
- Universe and lore (7 members)
- Uploaded files (3 members)
- Utility templates (5 members)
- Vehicle screenshots (0 members)
- Vehicle sprites (0 members)
- Vehicles (2 members)
- Wallpaper (5 members)
- Weapon screenshots (3 members)
- Weapon sprites (1 member)
- Weapons (2 members)
- Weapons by era (3 members)
- Website images (2 members)
- Websites (2 members)
- Wiki (10 members)
- Wiki images (3 members)