| 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 | |