The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- AI Characters (24 members)
- AI Generated (31 members)
- AI Generated Images (2 members)
- AI Non-Player Characters (40 members)
- Abandoned (173 members)
- Abandoned Artifacts (1 member)
- Abandoned Elements (5 members)
- Abandoned Technology (5 members)
- Abhuman Characters (0 members)
- Abnormal Human Characters (11 members)
- Adara Sector (6 members)
- Advanced Armor (13 members)
- Advanced Technology (89 members)
- Advanced Weaponry (31 members)
- Advanced Weapons (1 member)
- All pages needing cleanup (1 member)
- Alternate Realities (2 members)
- American writer navigational boxes (1 member)
- Anarchist theory (1 member)
- Android Characters (3 members)
- Angelic Sins (45 members)
- Angelic Sins Characters (115 members)
- Angelic Sins Non-Player Characters (30 members)
- Angelic Sins Organizations (6 members)
- Animal navigational boxes (1 member)
- Anomalies (1 member)
- Anthropology (1 member)
- Armor (0 members)