Companies
- Iron Galaxy Studios
- Iron Gate Studio
- Ironbird Creations
- Ironmace
- Ironwood Studios
- Irrational Games
- Ivory Tower
- Jackbox Games
- Jagex Games Studio
- JAMDAT Mobile Hawaii
- Jar of Sparks
- Jonathan Blow
- JoWooD Entertainment
- Jukai Studio
- Jumpship
- Junction Point
- Jutsu Games
- Kadokawa Games
- Kalypso Media
- Keen Games
- KeokeN Interactive
- Kepler Interactive
- Keywords
- Kick
- Kinetic Games