The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Yume Tsushin Guides (5 members)
- Yume Tsushin Locations (44 members)
- Yume Tsushin Nexus Worlds (0 members)
- Yume wo Samayou (11 members)
- Yumebako (51 members)
- Z7 (3 members)
- ZLD1 (3 members)
- Zekonas (1 member)
- Zenmaigahara (35 members)
- Zoo (2 members)