Companies
- iRacing.com Motorsport Simulations
- Irem
- Iron Galaxy Studios
- Iron Gate Studio
- Ironmace
- Ironwood Studios
- Irrational Games
- Ivory Tower
- Jagex Games Studio
- Jaleco Entertainment
- Jandusoft
- Jonathan Blow
- JoWooD Entertainment
- Jump Over the Age
- Jumpship
- Junction Point
- Jupiter
- Jutsu Games
- Kadokawa Games
- Kairosoft
- Kalypso
- Kalypso Media
- KAOLink
- Keen Games
- KeokeN Interactive