| Name | Types | |
|---|---|---|
| H.P.N. | Developer | |
| H2 Interactive | DeveloperPublisher | |
| H2O Entertainment | Developer | |
| H2OPunks | Developer | |
| H4iry Bro | Developer | |
| H4plo | Developer | |
| H4rmey | Developer | |
| HACAH | Developer | |
| HAL America | Publisher | |
| HAL Corporation | Publisher | |
| HAL Laboratory | DeveloperPublisher | |
| HAL Laboratory JP | Publisher | |
| HAL Laboratory NA | Publisher | |
| HALPCat | Developer | |
| HANGAME | Publisher | |
| HARD | DeveloperPublisher | |
| HARD Software | DeveloperPublisher | |
| HARFANG®3D | Developer | |
| HAS-IT GAMES | Developer | |
| HAUO | Developer | |
| HB Studios | DeveloperPublisher | |
| HB Studios Multimedia | Developer | |
| HBaddict | Developer | |
| HCdev12 | Developer | |
| HD Publishing | Publisher | |
| HEAVENDELUXE | Developer | |
| HEGworks | Developer | |
| HER.E Game Studio | Developer | |
| HEYBUD | Developer | |
| HGM Studios | Developer | |
| HIDROXIDO STUDIOS | Developer | |
| HIZUVI | Developer | |
| HI_TV | Developer | |
| HK Spadez | Developer | |
| HK Studio | Developer | |
| HKstudios | Developer | |
| HLEBNY | Developer | |
| HLNunnelly | Developer | |
| HMH Hamburger Medien Haus | DeveloperPublisher | |
| HMH Interactive | Publisher | |
| HOF Studios | DeveloperPublisher | |
| HOGuru | Developer | |
| HOIman6321 | Developer | |
| HORSES' MUSIC-DOGS | Developer | |
| HOT | DeveloperPublisher | |
| HOT B | Developer | |
| HOU Mai | Developer | |
| HOWLITE Entertainment | Developer | |
| HR Games | Publisher | |
| HRGames | Developer |