| HexagonNico | Developer | |
| Hexagonal | Developer | |
| Hexdragonal | Developer | |
| Hexecutable | Developer | |
| Hexenwerk | Developer | |
| Hexer_ | Developer | |
| Hexerei Games | Developer | |
| Hexeule | Developer | |
| Hexfall | Developer | |
| Hexgames | Publisher | |
| HexigonGames | Developer | |
| Hexterion | DeveloperPublisher | |
| Hey Minty! Studios | Developer | |
| HeyKarakItsAli | Developer | |
| HeyMarmalade | Developer | |
| HeyYeh | Developer | |
| Heyko | Developer | |
| Heywood Jablowmey | Developer | |
| Hezbollah | Publisher | |
| Hi Corp | Developer | |
| Hi Score (Alvaro Mateos Herrera, Angel Macedo, Manuel Guillen Gonzalez, Francisco Gomez, Francisco Rodriguez, David Brioso Santos, Angel Tirado Higuero, Jose Ramon Perez, Manuel Gasco, Rafael Garcia) | Developer | |
| Hi Tech Expressions | DeveloperPublisher | |
| Hi Tech Expressions (NA/EU) | Publisher | |
| Hi Tech Expressions EU | Publisher | |
| Hi Tech Expressions NA | Publisher | |
| Hi Tech Expressions NA/EU | Publisher | |
| Hi-Bit Studios | Developer | |
| Hi-Rez Studios | DeveloperPublisher | |
| Hi-Score Software | Publisher | |
| Hi-Tec Software | Publisher | |
| Hi-Tec Software Ltd. | Publisher | |
| Hi-Tech Entertainment | Publisher | |
| Hi-Tech Expressions | DeveloperPublisher | |
| Hi-Tech ExpressionsNA | Publisher | |
| HiFishInteractive | Developer | |
| HiImBox | Developer | |
| HiNice2MeetU | Developer | |
| HiTopps | Developer | |
| Hibernian Workshop | Developer | |
| HibouEterno | Developer | |
| Hickery | Developer | |
| Hidden Achievement | DeveloperPublisher | |
| Hidden City Games | Developer | |
| Hidden Entertainment | Developer | |
| Hidden Fields | Developer | |
| Hidden Floor | Developer | |
| Hidden Layer Games | Developer | |
| Hidden Masquerade | Developer | |
| Hidden Ocean Games | Developer | |
| Hidden Path Entertainment | DeveloperPublisher | |
| Hidden Trap | DeveloperPublisher | |
| Hidden Treasures | Developer | |
| Hidden Variable | Developer | |
| HiddenBlip | Developer | |
| HiddenKey | Developer | |
| HiddenTrack | Developer | |
| Hide | DeveloperPublisher | |
| Hide the Pain Studios | Developer | |
| HidekiRoz | Developer | |
| Hideo Kojima Production | Developer | |
| Hideos | Developer | |
| Hiding Spot | Developer | |
| Hien Pham | Developer | |
| Hieu Le | Developer | |
| Hifire | Developer | |
| Higgs Games | Publisher | |
| High Horse Entertainment | DeveloperPublisher | |
| High Impact Games | Developer | |
| High Leap Studios | Developer | |
| High Level | Developer | |
| High Moon Studios | Developer | |
| High Octane | Developer | |
| High Priority Studios | Developer | |
| High Score Entertainment | Developer | |
| High Score Productions | Developer | |
| High Sodium Games | Developer | |
| High Tale Studios | Developer | |
| High Tea Frog | Developer | |
| High Tech Lab Japan | Developer | |
| High Tech Laboratory Japan | Developer | |
| High Voltage Software | Developer | |
| High-Tech Lab Japan | Developer | |
| HighPassionStudios | Developer | |
| HighPriority | Developer | |
| HighTech Lab. Japan Inc. | Developer | |
| HighTyrol | Developer | |
| Highfly | Developer | |
| Highground Software | Developer | |
| Highrise Studios | Developer | |
| Highscore | Developer | |
| HighwayStar | Developer | |
| Highwaystar | DeveloperPublisher | |
| Highwaystar Co., Ltd | Developer | |
| Hijinx Studios | Developer | |
| Hijiri | Developer | |
| Hikaru | Developer | |
| Hiker Games | Developer | |
| Hikitsun | Developer | |
| HikoKyoujurou | Developer | |
| Hill MacGibbon | Publisher | |
| Hillbilly Games | Developer | |
| Hillcrest Games | Developer | |
| Hilvon | Developer | |
| Himalaya Studios | DeveloperPublisher | |
| Himeki Games | Developer | |
| Himeya Soft | DeveloperPublisher | |
| Himeya Soft, Inc. | DeveloperPublisher | |
| Himnish Jain | Developer | |
| HinterBurnerGames | Developer | |
| Hinterland Studio | DeveloperPublisher | |
| Hip Games | Publisher | |
| Hip GamesEU | Publisher | |
| Hip GamesNA | Publisher | |
| Hip Interactive | Publisher | |
| HipSoft | Developer | |
| Hippie | Developer | |
| HippieRobot | Developer | |
| Hippocrit | Developer | |
| Hippopotaska | Developer | |
| Hipposcripter | Developer | |
| Hipreme | Developer | |
| Hipster Whale | DeveloperPublisher | |
| Hiragihoux | Developer | |
| HiramSycamore | Developer | |
| Hirameki International | Publisher | |
| Hircex | Developer | |
| Hired Gun | Developer | |
| Hiro | Publisher | |
| Hiro JP | Publisher | |
| Hiromi | Publisher | |
| Hiropu | Developer | |
| Hiroshi Mishima | Developer | |
| HirsuteNewt | Developer | |
| HiryuJupiter | Developer | |
| HisHighness1 | Developer | |
| Hisashimaru | Developer | |
| HisgaleenHAME | Developer | |
| Hishalea | Developer | |
| Hisham | Developer | |
| Hisham Sayd | Developer | |
| Hissatsu Studios | Developer | |
| Historia | Developer | |
| Hit Maker | Developer | |
| Hit Pak | Publisher | |
| Hit Point | DeveloperPublisher | |
| Hit Point Hero | Developer | |
| Hit-Pak | Publisher | |
| Hit-Point | Developer | |
| HitOrMissy | Developer | |
| HitPoint | Developer | |