The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 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)
- Pages with broken file links (5 members)
- Pages with ignored display titles (0 members)
- Pages with script errors (2 members)
- Pages with short description (23 members)
- Pages with syntax highlighting errors (1 member)
- Particle Collider (1 member)
- Patch Notes (108 members)
- Patch Notes-0.10 (2 members)
- Planets (22 members)
- Policies (4 members)
- Power Facility (7 members)
- Power Storage (2 members)
- Power Transmission (4 members)
- Production Chain templates (0 members)
- Production Facility (3 members)
- Projects (1 member)
- Rare Material (6 members)
- Refining Facility (1 member)
- Research (3 members)
- Research Facility (1 member)
- Science Matrix (6 members)
- Smelting Facility (3 members)
- Spam blacklist (1 member)
- Stubs (0 members)
- TechInfo Pages (108 members)
- Technology (98 members)
- Template (40 members)
- Template documentation (18 members)
- Templates without documentation (0 members)
- Transclusion Pages (4 members)
- Turret (7 members)
- Upgrade (21 members)
- UpgradeInfo Pages (19 members)
- Utility templates (2 members)
- Water Pumping Facility (1 member)
- Wiki Information (5 members)
- Wiki maintenance (8 members)
- Work in progress (6 members)