The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Appearance Templates (1 member)
- Blog posts (1 member)
- Candidates for deletion (1 member)
- Changelogs (63 members)
- Characters (1 member)
- Comics (99 members)
- Community Scenarios (7 members)
- Content (1 member)
- Cravers (1 member)
- DLC (21 members)
- Deprecated (6 members)
- Disambiguations (0 members)
- Endless Space 2 (1 member)
- Endless Space 2 Wiki (7 members)
- Events (1 member)
- Faction Prologue (10 members)
- Faction Quests (6 members)
- Factions (41 members)
- Family tree templates (1 member)
- Formatting Templates (1 member)
- Game Systems (27 members)
- General wiki templates (1 member)
- Help (0 members)
- Horatio (2 members)
- Icons (99 members)
- Images (2 members)
- Imperials (1 member)
- In Progress (1 member)
- Lore (29 members)
- Lumeris (1 member)
- Major Factions (12 members)
- Minor Factions (27 members)
- Modules (6 members)
- Notice templates (2 members)
- Pages with broken file links (3 members)
- Pages with syntax highlighting errors (1 member)
- Politics (2 members)
- Quests (8 members)
- Resources (4 members)
- Riftborn (3 members)
- Ship Bound (1 member)
- Sophon (2 members)
- Stage (2 members)
- System Management (6 members)
- Tactics (1 member)
- Technology (29 members)
- Template documentation (27 members)
- Templates (27 members)
- Tutorials (5 members)
- Unfallen (5 members)