The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Alea Aquarius (Novels) (2 members)
- Alea Aquarius Wiki (6 members)
- Article templates (1 member)
- Blog posts (0 members)
- Candidates for deletion (0 members)
- Cast (1 member)
- Character (1 member)
- Community (1 member)
- Content (1 member)
- Disambiguations (0 members)
- Documentation templates (1 member)
- Female (1 member)
- General wiki templates (18 members)
- Hatnote templates with errors (0 members)
- Image license templates (13 members)
- Images (4 members)
- Infobox templates (13 members)
- Maintenance (6 members)
- Media (2 members)
- Merman (1 member)
- Navbox templates (1 member)
- Notice templates (10 members)
- Pages with broken file links (0 members)
- Quote templates (2 members)
- Screenshots (0 members)
- Stubs (1 member)
- Template documentation (56 members)
- Templates (12 members)
- Unattributed files (0 members)
- Videos (0 members)
- Wiki (1 member)
- Wiki skin images (2 members)