The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Articles with empty sections (0 members)
- Avain (1 member)
- Candidates for deletion (7 members)
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- Characters (21 members)
- Characters/fr (1 member)
- Cheese (2 members)
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- Community (5 members)
- Copyright templates (12 members)
- Demo (9 members)
- Disambiguations (0 members)
- Documentation templates (3 members)
- Enemies (1 member)
- Explosive (1 member)
- FR translation (1 member)
- Food (1 member)
- Formatting templates (18 members)
- Front page sections (4 members)
- Front page sections/tr (4 members)
- Guides (2 members)
- Hidden categories (2 members)
- Images (661 members)
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- Infobox templates (8 members)
- Items (351 members)
- Legal notices (3 members)
- Media (1 member)
- Monsters (80 members)
- Navigation templates (3 members)
- Neon Abyss (12 members)
- Neon Abyss Wiki (8 members)
- Neon Abyss images (739 members)
- New Gods (22 members)
- Notice templates (17 members)
- Obsolete (5 members)
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- Pets (2 members)
- Release (21 members)
- Removed items (1 member)
- Rocket (1 member)
- Rooms (6 members)
- Skills (1 member)
- Stubs (4 members)
- TR translation (103 members)
- Template documentation (45 members)
- Templates (19 members)