| Graeme Devine | Developer | |
| Graeme Lennon | Developer | |
| Graeme1995 | Developer | |
| Graffiti | Developer | |
| Graffiti Entertainment | Publisher | |
| Graffiti Games | DeveloperPublisher | |
| Graffiti_Games | Developer | |
| Graftgold | Developer | |
| Graftgold (David O'Conner, John Cumming) | Developer | |
| Graftgold (David O'Connor) | Developer | |
| Graftgold (Dominic Robinson, John Cumming, Steve Turner) | Developer | |
| Graftgold (Steve Turner) | Developer | |
| Graftgold (Steve Turner, John Cumming, Jason Page) | Developer | |
| GrafxKid | Developer | |
| Graham | Developer | |
| Graham Axten | Developer | |
| Graham Blighe | Developer | |
| Graham Cluley | Developer | |
| Graham Dolle | Developer | |
| Graham Lilley | Developer | |
| Graham Nelson | Developer | |
| Graham Stafford | Developer | |
| Graham Weldon | Developer | |
| Graham Wiebe | Developer | |
| GrahamtheGrim | Developer | |
| GrahfMetal | Developer | |
| Gram Nitschke | Developer | |
| GramOner | Developer | |
| Grame Studios | Developer | |
| Granada | Developer | |
| Grand Dog Studio | Developer | |
| Grand Prix Games | Developer | |
| Grand Productions | Publisher | |
| GrandInquisitor | Developer | |
| Grande Games | DeveloperPublisher | |
| Grande de Muza Games | Developer | |
| Grandprix Inc. | Developer | |
| Grandslam | Publisher | |
| Grandslam Entertainment | Publisher | |
| Grandslam Entertainments | DeveloperPublisher | |
| Grandslam Interactive | Publisher | |
| Grandslam Video | Publisher | |
| Grandslam Video Ltd. | Publisher | |
| Granite Bay Software | Developer | |
| Granja Studios | Developer | |
| Grant Doney | Developer | |
| Grant Jaquest | Developer | |
| Grant Ojanen's Creations | Developer | |
| Grant Wang | Developer | |
| Grant Worsfold | Developer | |
| Granzella | DeveloperPublisher | |
| Graouh | Developer | |
| Grapeshot Games | DeveloperPublisher | |
| Graphene AI | Developer | |
| Graphic Research | Developer | |
| Graphic Research Co. Ltd | Developer | |
| Graphic Research Co., Ltd | Developer | |
| Graphic State | Developer | |
| Graphic State Games | Developer | |
| GraphicDNA | DeveloperPublisher | |
| GraphicWares | Developer | |
| Graphite Lab | DeveloperPublisher | |
| Graphite Lab Interns | Developer | |
| Graphium Studio | Developer | |
| Graphmaxer | Developer | |
| Graphsim Entertainment | Publisher | |
| Grasita Games | Developer | |
| Grasp Games Ayush Dutta™ | Developer | |
| Grass | Developer | |
| Grasshopper Manufacture | DeveloperPublisher | |
| Grate0 | Developer | |
| GrateMate | Developer | |
| Gratuitous Games | Developer | |
| Graugen | Developer | |
| Grave Danger Games | Developer | |
| Graven Visual Novels | Developer | |
| Gravity Goat | Developer | |
| Gravity Interactive | Developer | |
| Gravity Interactive, Inc. et al. | DeveloperPublisher | |
| Gravity, Inc. | Developer | |
| Gravity-I | Developer | |
| Gravity-i | Developer | |
| GravityBox | Developer | |
| GravityGames | Developer | |
| GravityI | Developer | |
| Grawly | Developer | |
| Gray Design Associates | DeveloperPublisher | |
| Gray Fin Studios | DeveloperPublisher | |
| Gray Matter | Developer | |
| Gray Matter Inc. | Developer | |
| Gray Matter Interactive | Developer | |
| GrayFinStudios | Developer | |
| GrayWingII | Developer | |
| Grayfax Software | Developer | |
| Grayson Holmes | Developer | |
| Greaby | Developer | |
| GreasyCode | Developer | |
| Great Co | DeveloperPublisher | |
| Great Co. | DeveloperPublisher | |
| Great Co., Ltd. | DeveloperPublisher | |