The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 2016 (1 member)
- Article management templates (4 members)
- Article stubs (0 members)
- BlogListingPage (0 members)
- Blog posts (76 members)
- Browse (3 members)
- CC-BY files (2 members)
- Candidates for deletion (2 members)
- Candidates for speedy deletion (0 members)
- Category templates (3 members)
- Clue (1 member)
- Color templates (2 members)
- Community (9 members)
- Content (1 member)
- Copyright (0 members)
- Disambiguations (0 members)
- Example subcategory (1 member)
- Files (2 members)
- Forums (6 members)
- General wiki templates (34 members)
- Geopolitical Secret Soceity (1 member)
- Help (5 members)
- Help desk (3 members)
- Hidden categories (3 members)
- Home templates (5 members)
- IRC LOGS (1 member)
- Image wiki templates (10 members)
- Images (3 members)
- Infobox templates (9 members)
- Investigations (13 members)
- LINKS AND INFORMATIONS ON CICADA PUZZLES FROM 2012 (0 members)
- Liber Primus (6 members)
- Liber Primus solved pages (2 members)
- May 2014 Runes (58 members)
- Needs Linking (14 members)
- New pages (0 members)
- Organisation (0 members)
- Organization (10 members)
- Pages proposed for deletion (0 members)
- Pages with broken file link (0 members)
- Pages with broken file links (2 members)
- Pages with signed messages (14 members)
- Pages with unconfirmed information (5 members)
- Policy (2 members)
- Site administration (4 members)
- Site maintenance (5 members)
- Template documentation (60 members)
- Templates (19 members)
- Videos (37 members)
- Watercooler (1 member)
Community content is available under CC-BY-SA unless otherwise noted.