| Gargoyle Mechanics | Developer | |
| Gari Biasillo | Developer | |
| GarlicGuy | Developer | |
| GarlicNoodles | Developer | |
| Garner | Developer | |
| Garoa Studios | Developer | |
| GarretMakesGames | Developer | |
| Garrett's Game Dev Stuff | Developer | |
| GarrettAlpha910 | Developer | |
| Garrick | Developer | |
| Garrick Campsey | Developer | |
| Garry F. Taylor | Developer | |
| Garry Hughes | Developer | |
| Garth Robinson | Developer | |
| Garuda | Developer | |
| Garuto | Developer | |
| GarvSethi | Developer | |
| Gary Capewell | Developer | |
| Gary Knight | Developer | |
| Gary O'Reilly | Developer | |
| Gary Penn | Developer | |
| Gary Priest | Developer | |
| Gary Quiring | Developer | |
| Gary Shannon | Developer | |
| Gary Stark | Developer | |
| Gary The Bard | Developer | |
| Gary Tonge | Developer | |
| Gary Walmsley | Developer | |
| GaryButterfield | Developer | |
| GaryRatcliffe | Developer | |
| Garzec | Developer | |
| Gas Mask War Studio | Developer | |
| Gas Powered Games | Developer | |
| Gaslight Games | Developer | |
| Gasoline | Publisher | |
| Gastronaut Studios | Developer | |
| Gat de Soia | Developer | |
| Gateway Interactive | DeveloperPublisher | |
| Gatheesha | Developer | |
| Gathering | Publisher | |
| Gathering of Developers | Publisher | |
| Gathering of DevelopersEU | Publisher | |
| Gathering of DevelopersNA | Publisher | |
| Gato D | Developer | |
| Gato Mocho | Developer | |
| Gattai Games | Developer | |
| Gau Entertainment | Developer | |
| Gaugepunk Games | Developer | |
| Gaulent | Developer | |
| Gaumont Multimedia | Developer | |