The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Article message templates (2 members)
- Article message templates with missing parameters (1 member)
- Article stubs (1 member)
- Articles using small message boxes (2 members)
- Articles which use infobox templates with no data rows (3 members)
- Buildings (0 members)
- Community (2 members)
- Exclude in print (1 member)
- Exclusive (1 member)
- FANON (30 members)
- Faction (5 members)
- Ground Structure (9 members)
- Mbox and messagebox templates (1 member)
- Megastructures (3 members)
- Modules subject to page protection (1 member)
- Moons (11 members)
- Namespace manipulation templates (1 member)
- Nation (0 members)
- Neutrality templates (1 member)
- Notice templates (1 member)
- Obsolescence disputes (1 member)
- Pages using DynamicPageList (1 member)
- Pages using duplicate arguments in template calls (1 member)
- Pages which use infobox templates with ignored data cells (22 members)
- Pages with broken file links (2 members)
- Pages with reference errors (2 members)
- Pages with script errors (5 members)
- Planetary Vehicle (4 members)
- Planets (58 members)
- Player (7 members)
- SC1 Planets (1 member)
- Servers (1 member)
- Shadow of the Federation (8 members)
- Solar Conquest 1 (1 member)
- Solar Conquest 2 (2 members)
- Space Structure (2 members)
- Spacecraft (11 members)
- Star System (4 members)
- Stubs (0 members)
- Template documentation (3 members)
- Template documentation pages (6 members)
- Template namespace templates (2 members)
- Userboxes with insufficient color contrast (1 member)
- Weapon (11 members)
- Wiki (4 members)
- Wikipedia utility templates (1 member)