The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Action games (2 members)
- Age of Empires (1 member)
- Article management templates (3 members)
- Article stubs (4 members)
- BlogListingPage (0 members)
- Browse (8 members)
- Bungie Studios (2 members)
- Candidates for deletion (0 members)
- Category templates (3 members)
- Community (3 members)
- Companies (2 members)
- Content (1 member)
- Copyright (0 members)
- Disambiguations (0 members)
- FPS games (0 members)
- Forums (6 members)
- Games (16 members)
- Games for Windows (1 member)
- General wiki templates (21 members)
- Halo (2 members)
- Hardware (3 members)
- Help (6 members)
- Help desk (2 members)
- Hidden categories (2 members)
- Image wiki templates (11 members)
- Images (1 member)
- Madness games (0 members)
- Microsoft (3 members)
- Microsoft games (1 member)
- Microsoft products (1 member)
- Organisation (8 members)
- Pages with broken file links (0 members)
- People (0 members)
- Policy (2 members)
- Puzzle games (0 members)
- RTS games (0 members)
- Site administration (2 members)
- Site maintenance (3 members)
- Templates (5 members)
- Watercooler (2 members)
- Windows games (1 member)
- Xbox (10 members)
- Xbox 360 (4 members)
- Xbox 360 Games (1 member)
- Xbox One (1 member)
- Zoo Tycoon (0 members)