The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Achievement images (14 members)
- Achievements (2 members)
- Ammunition (2 members)
- Ammunition Images (1 member)
- Armor (2 members)
- Batteries (5 members)
- Battery Images (7 members)
- Candidates for deletion (9 members)
- Candidates for speedy deletion (0 members)
- Cars (1 member)
- Citation needed (0 members)
- Cleanup (0 members)
- Community (7 members)
- Contents (2 members)
- Cooking (6 members)
- Copyright templates (13 members)
- Crafting (4 members)
- Crafting Equipment (5 members)
- Crafting Projects (7 members)
- Creatures (17 members)
- Datapads (1 member)
- Disambiguations (0 members)
- Documentation templates (5 members)
- Energy Weapons (1 member)
- Equipment (24 members)
- Explosives (3 members)
- Fletching (2 members)
- Formatting templates (22 members)
- Front page sections (0 members)
- Gadgets (6 members)
- Gadjets (1 member)
- Game Guide (2 members)
- Gamepedia Blocks (3 members)
- Gemology (25 members)
- General wiki templates (1 member)
- Guides (1 member)
- Guns (0 members)
- Help (1 member)
- Hidden categories (0 members)
- Icons (340 members)
- Images (6 members)
- Images needing improvement (0 members)
- Infobox templates (2 members)
- Ingots (1 member)
- Keycards (1 member)
- Legal notices (3 members)
- License templates (8 members)
- MEG Tool (1 member)
- Materials (73 members)
- Media (2 members)