| Great Gamess | Developer | |
| Great Gretuski Studios LLC | Developer | |
| Great Idea Games | Developer | |
| Great Software | DeveloperPublisher | |
| GreatChikenStudio | Developer | |
| GreatPushiModder | Developer | |
| Grecat | Developer | |
| Greebles | Developer | |
| Greedlizard | Developer | |
| Green Belt Games | Developer | |
| Green Cheese Games | Developer | |
| Green Dinosaur Games | Developer | |
| Green Frisbee Games | Developer | |
| Green Giraffe | Developer | |
| Green Lava Studios | DeveloperPublisher | |
| Green Lightning | DeveloperPublisher | |
| Green Markhor | Developer | |
| Green Panda Studios | Developer | |
| Green Sauce Games | Developer | |
| Green Screen Games | Publisher | |
| Green Thumb Games | Developer | |
| Green Tile Digital | Developer | |
| Green Time Studio | Developer | |
| Green Train Studio | Developer | |
| GreenBeakCrow | Developer | |
| GreenBoxGames | Developer | |
| GreenClovers | Developer | |
| GreenDjango | Developer | |
| GreenDuckStudio | Developer | |
| GreenGlob salsa. | Developer | |
| GreenZie709 | Developer | |
| Greenbean5 | Developer | |
| Greene Gator Games | Developer | |
| Greenfly Studios | Developer | |
| Greenhawk | Developer | |
| Greenheart Games | DeveloperPublisher | |
| Greenleaf | Developer | |
| Greenlegacy | Developer | |
| Greenlight Games | Publisher | |
| Greenwave Games | Publisher | |
| Greenwood | Developer | |
| Greenwood Entertainment | Publisher | |
| Greenwood Entertainment Software | DeveloperPublisher | |
| Greenwood Entertainment Software GmbH | Publisher | |
| Greeny7 | Developer | |
| Greet | Developer | |
| Greg A Holmes | Developer | |
| Greg Buchanan | Developer | |
| Greg Carbonaro | Developer | |
| Greg Fisher | Developer | |
| Greg Follis | Developer | |
| Greg Hassett | Developer | |
| Greg Karber | Developer | |
| Greg Klein | Developer | |
| Greg Kuperberg | Developer | |
| Greg Lobanov | Developer | |
| Greg Squire | Developer | |
| GregorSD | Developer | |
| Gregory Avery-Weir | Developer | |
| Gregory Blood | Developer | |
| Gregory Neale | Developer | |
| Gregory Weber | Developer | |
| GregoryGentilhomme | Developer | |
| GregularGames | Developer | |
| Grekaro06 | Developer | |
| Gremlin | DeveloperPublisher | |
| Gremlin Graphics | DeveloperPublisher | |
| Gremlin Graphics (Tony Porter, Kevin Bulmer, Ben Daglish) | Developer | |
| Gremlin Graphics (Tony Porter, Kevin Bulmer, Bill Allen, Ben Daglish) | Developer | |
| Gremlin Graphics Design | DeveloperPublisher | |
| Gremlin Graphics EU | Publisher | |
| Gremlin Graphics Software | DeveloperPublisher | |
| Gremlin GraphicsEU | Publisher | |
| Gremlin Industries | Publisher | |
| Gremlin Interactive | DeveloperPublisher | |
| Gremlin InteractivePAL | Publisher | |
| Gremlin Ireland | Developer | |
| Gremonation | Developer | |
| Grenaberry | Developer | |
| Grenadine | Developer | |
| Grendel Games | DeveloperPublisher | |
| Gretech | Developer | |
| Grey | Developer | |
| Grey Alien Games | Developer | |
| Grey Box | Publisher | |
| Grey Flag | Developer | |
| Grey Ghost Dev | Developer | |
| Grey M. | Developer | |
| Grey ✨ | Developer | |
| GreyCypher | Developer | |
| GreyStone | Publisher | |
| Greyhunter99 | Developer | |
| Greyman Studios | Developer | |
| Greynvi | Developer | |
| Greystone Games | Developer | |
| Greyt Games | Developer | |
| Grezzo | Developer | |
| Grhyll | Developer | |
| Griddolini | Developer | |
| Griffin Thenell | Developer | |
| Griffin76 | Developer | |
| Grigon Entertainment | Developer | |
| Grigorio | Developer | |
| GrilledCheems | Developer | |
| Griloviscky | Developer | |
| Grim Baccaris 👁️ | Developer | |
| Grim World Company | Developer | |
| Grim42 | Developer | |
| GrimGaming2006 | Developer | |
| GrimTalin | DeveloperPublisher | |
| Grim_Ork | Developer | |
| Grimdork | Developer | |
| Grimm Bros | DeveloperPublisher | |
| Grimm Bros. | Developer | |
| Grimmelda | Developer | |
| GrimmyVR | Developer | |
| Grimon | Developer | |
| Grimorio of Games | Developer | |
| Grimtalin | DeveloperPublisher | |
| Grin | Developer | |
| Grin Crow Studio | Developer | |
| Grinding Gear Games | DeveloperPublisher | |
| Grindstone | Developer | |
| Grinn | Developer | |
| Griny | Developer | |
| Grinzouille | Developer | |
| Grip Digital | DeveloperPublisher | |
| Grip Games | DeveloperPublisher | |
| Griptonite Games | Developer | |
| Gritfish | Developer | |
| Grizmu | Developer | |
| GrizzliusMaximus | Developer | |
| Grizzly Machine | Developer | |
| Grocer | DeveloperPublisher | |
| GrogDev | Developer | |
| Grogian | Developer | |
| Grolier Electronic Publishing | DeveloperPublisher | |
| Grolier Interactive | DeveloperPublisher | |
| Grolier Interactive[1] | Publisher | |
| Grooly | Developer | |
| Groove Box Japan | Developer | |
| Groove Games | Publisher | |
| Groove GamesNA | Publisher | |
| Groove Media Inc. | Publisher | |
| Groover | DeveloperPublisher | |
| Groovy Antoid | Developer | |
| Groovy Milk | DeveloperPublisher | |
| GroovyDaft | Developer | |
| GroovyMaster | Developer | |
| Grory Seems | Developer | |
| GrosChevaux | DeveloperPublisher | |
| Grosswood | Developer | |
| Grotesk | Developer | |
| GrotmanGames | Developer | |
| Ground Control Studios | DeveloperPublisher | |
| Ground Shatter | DeveloperPublisher | |
| GroundShatter | Developer | |
| Grounding | Developer | |
| Group A | Developer | |
| Group B | Developer | |
| Group SNE | DeveloperPublisher | |
| GrowGaming | Developer | |
| Growing Seeds | Developer | |
| GrrOink | Developer | |
| Grubby Games | DeveloperPublisher | |
| Gruen Studios | Developer | |
| Grug | Developer | |
| Gruhh | Developer | |
| Gruhlum | Developer | |
| GrummelWrks | Developer | |
| Grump Dog | Developer | |
| GrumpOutGame | Developer | |
| Grumpy Weasel | Developer | |
| GrumpyFishGames | Developer | |
| GrumpyGoblin | Developer | |
| Grumpyface Studios | Developer | |
| Grundislav | Developer | |
| Grundislav Games | Developer | |
| GruneGames | Developer | |
| GrunkGrunk | Developer | |
| Grunka Munka | Publisher | |
| Grunka Munka Games | Developer | |
| GruntSteel | Developer | |
| Grupo Editorial Jackson | Publisher | |
| Grupo Editorial SYGRAN | Publisher | |
| Grupo de Trabajo Software | Publisher | |
| GryWiktora | Developer | |
| Gryphonblade | Developer | |
| Gryphondale Studios | Developer | |
| Gryzor's Games | Developer | |
| Gryzor87 | Developer | |
| Grégoire D. | Developer | |
| Gschmimo | Developer | |
| Gsozz | Developer | |
| Gsquadron | Developer | |
| Gst3 | Developer | |
| Gtion Production | Developer | |
| GuGames Development | DeveloperPublisher | |
| GuacaMolly | Developer | |
| GuacamoleFrog | Developer | |