| Holly Thomas | Developer | |
| Hollyware Entertainment | Publisher | |
| Holmade Games | DeveloperPublisher | |
| Holo Games | Developer | |
| Holocronet | Developer | |
| Hologrape | Developer | |
| Hologryph | Developer | |
| Hololabs | Developer | |
| Holoscope | Developer | |
| Holospark Games | DeveloperPublisher | |
| Holotna | Developer | |
| Holy Black Cat | Developer | |
| Holy Pangolin | Developer | |
| HolyPerceval | Developer | |
| HolySkullStudios | Developer | |
| Holyshit | Developer | |
| Home Data | DeveloperPublisher | |
| Home Data Corp. | DeveloperPublisher | |
| Home Entertainment Providers | Publisher | |
| Home Entertainment Suppliers | Publisher | |
| Home Entertainment Suppliers Pty | Publisher | |
| Home Net Games | Developer | |
| Home Sick | Developer | |
| Home Sweet Pixel | DeveloperPublisher | |
| HomeTeam GameDev | Developer | |
| Homebear Studios | DeveloperPublisher | |
| Homebrew Interactive | Developer | |
| Homebrew Software | DeveloperPublisher | |
| Homecooked | Developer | |
| Homega Software | Developer | |
| Homegrown Games | Developer | |
| Homemade Homies | Developer | |
| HomieBoon | Developer | |
| HomineLudens | Developer | |
| HonGongStudio | Developer | |
| HonestDan | Developer | |
| Honestly Games | Developer | |
| Honesty | Developer | |
| Honey Ash | Developer | |
| Honey Bunny | Developer | |
| Honey Parade Games | Developer | |
| Honey.CMB | Developer | |
| Honeybee Soft | Publisher | |
| HoneybunchGames | Developer | |
| Honeycomb Interactive | Developer | |
| Honeyslug | Developer | |
| Honor Code | DeveloperPublisher | |
| HonorDEV | Developer | |
| Honwaka Soft | DeveloperPublisher | |
| Hoochoo Game Studios | Developer | |