The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Lightning Fish (Developer) (3 members)
- Lionsfilm (Developer) (1 member)
- Lionsfilm (Publisher) (1 member)
- Liquid Entertainment (Developer) (3 members)
- LittleBigPlanet (Series) (6 members)
- Little Orbit (Developer) (1 member)
- Little Orbit (Publisher) (7 members)
- Live-Action (Genre) (1 member)
- Live Action Studios (Developer) (1 member)
- London Studio (Developer) (42 members)
- Longtail Studios (Developer) (1 member)
- Longtail Studios Québec (Developer) (1 member)
- Loose Cannon Studios (Developer) (1 member)
- Los 40 Principales: Karaoke Party (Series) (2 members)
- Lost Planet (Series) (4 members)
- Lua modules (14 members)
- Lucasarts (Developer) (3 members)
- Lucasarts (Publisher) (9 members)
- Lucid Games (Developer) (1 member)
- Ludia (Developer) (6 members)