The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Abilities (4 members)
- Achievements (1 member)
- Bio-Creeps (2 members)
- Biogenetics (7 members)
- Biomes (1 member)
- Blog posts (0 members)
- Browse (16 members)
- Candidates for deletion (0 members)
- Characters (15 members)
- Classes (3 members)
- Combat styles (1 member)
- Consumables (1 member)
- Developers (1 member)
- Disambiguations (0 members)
- Enemies (10 members)
- Gameplay (21 members)
- Games (1 member)
- Gear Bits (1 member)
- Help (0 members)
- Images (35 members)
- Infobox templates (3 members)
- Keys (1 member)
- Locations (11 members)
- Melee Base Types (1 member)
- Melee Parts (1 member)
- Miscellaneous Items (1 member)
- Mutation (15 members)
- Pages with broken file links (1 member)
- Perks (1 member)
- Plant (1 member)
- Psi-Powers (9 members)
- Publishers (1 member)
- Quest Items (1 member)
- Quests (3 members)
- Ranged Base Types (1 member)
- Ranged Parts (1 member)
- Screenshots (31 members)
- Side quests (2 members)
- Template documentation (27 members)
- Templates (29 members)
- Tools (2 members)
- Tribes (1 member)
- Trophies (1 member)
- Trophy images (47 members)
- Videos (13 members)
- Weapons (2 members)
- Wung-Fu (56 members)