The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Pages with TemplateStyles errors (2 members)
- Pages with broken file links (9 members)
- Pages with graphs (2 members)
- Pages with ignored display titles (1 member)
- Pages with script errors (12 members)
- Pages with short description (14 members)
- Pages with syntax highlighting errors (9 members)
- Particle Collider (1 member)
- Patch Notes (88 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)
- Preload text templates (1 member)
- Production Chain templates (0 members)
- Production Facility (3 members)
- Projects (1 member)
- Rare Material (6 members)