| GSC World Publishing | Publisher | |
| GSI | Developer | |
| GT Games | Developer | |
| GT Interactive | DeveloperPublisher | |
| GT Interactive (EU) | Publisher | |
| GT Interactive NA | Publisher | |
| GT Interactive PAL | Publisher | |
| GT Interactive Software | Publisher | |
| GT Interactive Software Corp. | Publisher | |
| GT InteractiveNA | Publisher | |
| GT InteractivePAL | Publisher | |
| GTE Entertainment | DeveloperPublisher | |
| GTE ImagiTrek | Developer | |
| GTE Interactive Media | DeveloperPublisher | |
| GTE Vantage | Developer | |
| GTEKK | Developer | |
| GTI Software | Publisher | |
| GTS | Developer | |
| GTshine | Developer | |
| GULTI Co Ltd | Developer | |
| GURN GROUP | Developer | |
| GUSH: Currently Pink | Developer | |
| GV2 | Developer | |
| GW | Publisher | |
| GWME Software | DeveloperPublisher | |
| GWRon | Developer | |
| GWS | Developer | |
| GWoolley | Developer | |
| GXB Interactive | Developer | |
| G_Boy | Developer | |
| GaUni | Developer | |
| Gab | Developer | |
| GabLucas17 | Developer | |
| Gabe | Developer | |
| Gabe Cuzzillo | Developer | |
| Gabe Swarr | Developer | |
| GabeJamesGames | Developer | |
| GabeTheDeadFish | Developer | |
| Gabeee | Developer | |
| Gabi Pinto | Developer | |
| Gabiszon | Developer | |
| Gabitasoft Entertainment | DeveloperPublisher | |
| Gabor Laufer & Alexander Laufer | Developer | |
| Gabriel | Developer | |
| Gabriel Bradley | Developer | |
| Gabriel Cassimiro | Developer | |
| Gabriel Cencic | Developer | |
| Gabriel Cornish | Developer | |
| Gabriel Cortabraz | Developer | |
| Gabriel Cyrino | Developer | |
| Gabriel Dias | Developer | |
| Gabriel Entertainment | Developer | |
| Gabriel Grossi | Developer | |
| Gabriel LF | Developer | |
| Gabriel Lorenzo | Developer | |
| Gabriel Naves | Developer | |
| Gabriel Ortas | Developer | |
| Gabriel Padinha | Developer | |
| Gabriel Priske | Developer | |
| Gabriel Ranieri | Developer | |
| Gabriel Raposo | Developer | |
| Gabriel Robertson | Developer | |
| Gabriel Santini Quibao | Developer | |
| Gabriel Serra | Developer | |
| Gabriel Tanasovici Nardy | Developer | |
| Gabriel Toschi | Developer | |
| Gabriel Vidal | Developer | |
| Gabriel Villalonga | Developer | |
| GabrielFSilva | Developer | |
| GabrielHoltschlag | Developer | |
| GabrielNied | Developer | |
| GabrielSharp | Developer | |
| GabrielZanini | Developer | |
| Gabriel_cmf | Developer | |
| Gabriela Dall'Agnol | Developer | |
| Gabriela Gomes Rodrigues | Developer | |
| Gabrielle Bleu | Developer | |
| Gabura | Developer | |
| Gabxi | Developer | |
| GachZorn | Developer | |
| Gad | Developer | |
| Gadan Games | Developer | |
| Gaddy | Developer | |
| Gadget Soft | DeveloperPublisher | |
| GadgetPatch | Developer | |
| Gaeel | Developer | |
| Gaelco | DeveloperPublisher | |
| Gaffiti Entertainment | Publisher | |
| Gaga | DeveloperPublisher | |
| Gaga Communications | DeveloperPublisher | |
| Gaga Communications (JP) | Publisher | |
| Gaga Communications Inc. EU | Publisher | |
| Gaga CommunicationsJP | Publisher | |
| Gaga Interactive MediaPAL | Publisher | |
| GagaPete | Developer | |
| Gage | Developer | |
| Gage Bradley | Developer | |
| Gagne International) | Developer | |
| Gagne Software | DeveloperPublisher | |
| Gagonfe | Developer | |