The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 2b2t (1 member)
- 2b2t Wiki (1 member)
- Albums (2 members)
- Backdoor (1 member)
- Blog posts (0 members)
- Books (2 members)
- Browse (7 members)
- Candidates for deletion (0 members)
- Characters (5 members)
- Community (1 member)
- Disambiguations (0 members)
- Episodes (2 members)
- Events (2 members)
- Griefers (1 member)
- Groups (1 member)
- Hackers (1 member)
- Help (0 members)
- Images (2 members)
- Incursion (1 member)
- Incursion Leaders (1 member)
- Items (2 members)
- Locations (2 members)
- Notable Players (1 member)
- Players (1 member)
- Projects (1 member)
- Prominent players during the 5th incursion (1 member)
- Prominent players during the 7th incursion (1 member)
- Quests (2 members)
- Template documentation (26 members)
- Templates (27 members)
- Templates/Infobox (8 members)
- Templates/Navbox (1 member)
- Templates/Quote (1 member)
- Typical 2b2t Addict (0 members)
- Typical 2b2t addict (1 member)
- Videos (3 members)