The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Arcs (3 members)
- Citations needed (0 members)
- Enabler (2 members)
- Enablers (2 members)
- Essays (2 members)
- Feuds (1 member)
- Formatting and function templates (1 member)
- Gabriel and... (10 members)
- Group (1 member)
- Hacks (2 members)
- Insanity Arc (2 members)
- Inside Jokes (2 members)
- Lolcows (3 members)
- Meltdowns (1 member)
- NSFW pages (4 members)
- No Alignment (3 members)
- Nova Online Wiki Policy (11 members)
- Ongoing Events (0 members)
- Pages that need media (6 members)
- Pages that talk about (mental) health (5 members)
- Pages with broken file links (16 members)
- Pages with to-do lists (3 members)
- Person (18 members)
- Resources (3 members)
- Revenge Arc (1 member)
- Satire pages (0 members)
- Show (4 members)
- Small pages (1 member)
- Stubs (52 members)
- Templates (2 members)
- Trolls (4 members)
- Wiki templates (1 member)