The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- .theprodukkt (Developer) (1 member)
- 10tons (Developer) (4 members)
- 10tons (Publisher) (3 members)
- 11 bit studios (Developer) (1 member)
- 1C Company (Publisher) (1 member)
- 2006 (Initial release year) (31 members)
- 2007 (Initial release year) (116 members)
- 2008 (Initial release year) (169 members)