Companies
- Grey Box
- Greylock Studio
- Grimlore Games
- Grinding Gear Games
- Grip Digital
- Griptonite Games
- Ground Shatter
- Gruby Entertainment
- GSC Game World
- Guerrilla Games
- Gugames
- Guinness World Records
- gumi
- Gun Media
- Gunfire Games
- GungHo Online Entertainment America
- GungHo Online Entertainment Inc.
- Gunzilla Games
- Gust
- Hadoque
- Haemimont Games
- HAL Laboratory
- Half Mermaid
- Halfbrick Studios
- Hammerfall Publishing
- Hammerpoint Interactive
- Hands-On Mobile
- Hangar 13
- Happion Labs
- Hardsuit Labs
- Harebrained Schemes
- Harmonix
- Harmonix Music Systems
- Hasbro
- Haven Studios LLC
- Hazelight Studios
- HB Studios
- HBO
- HBO Max
- Headcannon
- Headstrong Games
- Headup Games
- Headware Games
- Heart Machine
- Hellbent Games
- Hello Games
- Her Interactive
- Herobeat Studios
- Herocraft
- Hexadrive