| 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 | |