The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Sand Grain Studios (Developer) (3 members)
- Sandblast Games (Developer) (1 member)
- Sandbox (Genre) (7 members)
- Sandlot (Developer) (1 member)
- Sangoku Hime (Series) (1 member)
- Sangokushi (Series) (2 members)
- Sanuk Games (Publisher) (1 member)
- Sanzaru Games (Developer) (3 members)
- Sarbakan (Developer) (1 member)
- Saurus (Developer) (1 member)
- Saw (Series) (2 members)
- Scene It? (Series) (2 members)
- Schlag den Raab (Series) (2 members)
- Science Adventure (Series) (8 members)
- Scientifically Proven (Developer) (1 member)
- Scientifically Proven (Publisher) (1 member)
- Seaven Studio (Developer) (1 member)
- Seaven Studio (Publisher) (1 member)
- Secret Level (Developer) (3 members)
- Section 8 (Series) (2 members)