| 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 | |
| HSP | Developer | |
| HTML5 GAMES | Developer | |
| HTML_Earth | Developer | |
| HTMichaeL | Developer | |
| HThomson | Developer | |
| HULINKS Inc. | Publisher | |
| HUP Games | DeveloperPublisher | |
| HVB | DeveloperPublisher | |
| HYPETRAIN DIGITAL | Publisher | |
| HYPRGLOO | Developer | |
| HYSTUDIO | Developer | |
| HYYTELO2000 | Developer | |
| Haath | Developer | |
| Habib Pines | Developer | |
| Habide | Developer | |
| HaccaWorks | Developer | |
| Hachikuma Games | Developer | |
| Haché | Developer | |
| Hack Berry | DeveloperPublisher | |
| HackBird | Developer | |
| HackTrout | Developer | |
| Hackathon Chunguses | Developer | |
| HacksawUnit | Developer | |
| Hadarko110 | Developer | |
| Hadrosaurus Software | Developer | |
| Haemimont Games | DeveloperPublisher | |
| Haggard Games | Developer | |
| Hagge | Developer | |
| HahBikes | Developer | |
| Haharo | Developer | |
| Haiduc | Developer | |
| Haifu06 | Developer | |
| Haiku Studios | Developer | |
| Haikuo Soft | DeveloperPublisher | |
| Hail Burns | Developer | |
| Hailrig | Developer | |
| Hailstorm Games | DeveloperPublisher | |
| Haining Kong | Developer | |
| Hainyxgame_Studios | Developer | |
| Haioner | Developer | |
| HaiqGames | Developer | |
| Hairic Lilred | Developer | |
| HairyViking | Developer | |
| Haitham El Euch | Developer | |
| Haiyoooo | Designer & Artist | Developer | |
| Hajae Ko | Developer | |
| Hak Jak | Developer | |
| Hakita | Developer | |
| Hako | Developer | |
| Hako Seikatsu | DeveloperPublisher | |
| Haku Bai | Developer | |
| Hakuen Studio | Developer | |
| Hakuhodo | DeveloperPublisher | |
| Hal | Developer | |
| Hal Laboratory | Developer | |
| Halch | Developer | |
| HalconVengador | Developer | |
| Halcyon Games | Developer | |
| Halestorm | Developer | |
| Haley Price | Developer | |
| Half Cheek Games | Developer | |
| Half Dragon | Developer | |
| HalfBolt Games | Developer | |
| HalfPastYellow | Developer | |
| HalfPixelHeart | Developer | |
| Halfbot | Developer | |
| Halfbrick | DeveloperPublisher | |
| Halfbrick Studios | Developer | |
| Halfbus | Developer | |
| Halfoun | Developer | |
| Halfstar | Developer | |
| Halifax | Developer | |
| Halkyer Studios | Developer | |
| Hall Studios Games | Developer | |
| Hallgrim Games | Developer | |
| Hallow Games | Developer | |
| Hallowraith | Developer | |
| Hallwayy | Developer | |
| Halseo | DeveloperPublisher | |
| Ham | Developer | |
| HamHus | Developer | |
| Hambonair | Developer | |
| Hambug Games | Developer | |
| Hamezii | Developer | |
| Hamid 2019 | Developer | |
| Hamilton Rice | Developer | |
| Hamilton and Associates | Developer | |
| HamirTime | Developer | |
| Hamish Smithers | Developer | |
| HammerHead | Developer | |
| HammerHead, Ltd. | Developer | |
| Hammerhead | Developer | |
| Hammerhead Ltd | Developer | |
| HammyHam | Developer | |
| Hamster | DeveloperPublisher | |
| Hamster Corporation | DeveloperPublisher | |
| Hamster CorporationJP | Publisher | |
| Hamster Sophia | Developer | |
| HamsterJP | Publisher | |
| Hamumu | Developer | |