The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Ammo (3 members)
- Article stubs (8 members)
- Assembler (5 members)
- Astronomical Objects (3 members)
- Building (81 members)
- Bullet (1 member)
- Candidates for Cleanup (0 members)
- Candidates for cleanup (0 members)
- Candidates for deletion (0 members)
- Category Transclusion Pages (11 members)
- Chemical Facility (2 members)
- Citation templates (1 member)
- Combat Unit (1 member)
- Component (21 members)
- Components (77 members)
- Crafting Material (79 members)
- DPL templates (5 members)
- Dark Fog (1 member)
- Defense Facility (2 members)
- Disambiguation (1 member)
- Dyson Sphere Program (27 members)
- Dyson Sphere Program Wiki (4 members)
- Dyson Sphere Program Wiki community (2 members)
- EM Capsule (2 members)
- End Product (9 members)
- File namespace templates (1 member)
- Fractionation Facility (1 member)
- Fuel (20 members)
- Game Data (6 members)
- Indexed pages (1 member)
- Infobox Templates (1 member)
- Item (164 members)
- ItemInfo Pages (163 members)
- Item Recipe templates (4 members)
- License Templates (2 members)
- Logistics (24 members)
- Main page templates (1 member)
- Maintenance templates (1 member)
- Material (32 members)
- Mining Facility (3 members)
- Modding (9 members)
- Natural Resource (21 members)
- Natural Source (2 members)
- Navplates (3 members)
- Noindexed pages (1 member)
- Oil Extraction Facility (1 member)
- Pages containing TBD information (1 member)
- Pages using DynamicPageList3 parser function (23 members)
- Pages using deprecated source tags (2 members)
- Pages where expansion depth is exceeded (1,428 members)