The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Sol Dimension inhabitants (1 member)
- Songbirds (1 member)
- Sonic's transformations (1 member)
- Sonic & All-Stars Racing Transformed (2 members)
- Sonic & Sega All-Stars Racing (2 members)
- Sonic 3D Blast (1 member)
- Sonic 3 & Knuckles (2 members)
- Sonic 3 & Knuckles locations (2 members)
- Sonic Advance (5 members)
- Sonic Advance 2 (4 members)
- Sonic Advance 3 (5 members)
- Sonic Adventure (2 members)
- Sonic Adventure 2 (5 members)
- Sonic Adventure 2: Battle (1 member)
- Sonic Adventure 2 alternate versions and ports (1 member)
- Sonic Adventure DX: Director's Cut (1 member)
- Sonic Adventure locations (1 member)
- Sonic Battle (2 members)
- Sonic Blast (1 member)
- Sonic Chaos (1 member)
- Sonic Chronicles: The Dark Brotherhood (5 members)
- Sonic Colors: Ultimate (1 member)
- Sonic Colors (Nintendo DS) (4 members)
- Sonic Colors (Wii) (4 members)
- Sonic Dash (1 member)
- Sonic Dream Team (3 members)
- Sonic Drift (1 member)
- Sonic Drift 2 (3 members)
- Sonic Forces (4 members)
- Sonic Forces: Speed Battle (2 members)
- Sonic Forces locations (1 member)
- Sonic Free Riders (3 members)
- Sonic Frontiers (5 members)
- Sonic Frontiers Skills (1 member)
- Sonic Frontiers locations (1 member)
- Sonic Generations (Nintendo 3DS) (6 members)
- Sonic Generations (console/PC) (6 members)
- Sonic Generations (console/PC) locations (1 member)
- Sonic Generations (console/PC) texture images (1 member)
- Sonic Heroes (3 members)
- Sonic Heroes moves (1 member)
- Sonic Jam (1 member)
- Sonic Jump (1 member)
- Sonic Labyrinth (1 member)
- Sonic Lost World (1 member)
- Sonic Lost World (Nintendo 3DS) (3 members)
- Sonic Lost World (Wii U) (2 members)
- Sonic Mania (4 members)
- Sonic Pinball Party (2 members)
- Sonic Prime vehicles (1 member)