| Geezer Gus | Developer | |
| Geglo | Developer | |
| Geir Straume | Developer | |
| Geist Studio | Developer | |
| Geist_AI | Developer | |
| GekidoRising | Developer | |
| Gekko | Developer | |
| Gel KING | Developer | |
| Gelatinous Cube Games | Developer | |
| Gelato Games | Developer | |
| Gelato Labs | Developer | |
| GelatoDev | Developer | |
| Gelecegi Kodlayanlar | Developer | |
| Gelgavish | Developer | |
| Gelid Games, Inc. | Developer | |
| Gelo Studio | Developer | |
| GeloKaiser | Developer | |
| Gem Software | Publisher | |
| Gembit | Developer | |
| Gemdrops | DeveloperPublisher | |
| Gemi Games | Developer | |
| Geminimax | Developer | |
| Geminite Tech | Developer | |
| Gemioli | Developer | |
| Gemma Nash | Developer | |
| Gemma Thomson | Developer | |
| Gemsoft Corp. | Developer | |
| Gen Soft | DeveloperPublisher | |
| GenBrg | Developer | |
| GenDesign | Developer | |
| GenGames | Developer | |
| GenZdevs | Developer | |
| Genaro Almaraz | Developer | |
| Gendly Games | Developer | |
| Gendut Studio | Developer | |
| Gene Herrschaft | Developer | |
| Gene Smith | Developer | |
| GenePool Software | Developer | |
| GeneX | DeveloperPublisher | |
| Gener | Developer | |
| General (Paxon) | Publisher | |
| General Admission Software | Publisher | |
| General Arcade | Developer | |
| General Computer Corporation | Developer | |
| General Entertainment | DeveloperPublisher | |
| General Entertainment Co. Ltd. | DeveloperPublisher | |
| General Interactive | DeveloperPublisher | |
| General Interactive Co. | Developer | |
| General Nut | Developer | |
| General Quarters Software | DeveloperPublisher | |
| General Support | DeveloperPublisher | |
| GeneralBirch | Developer | |
| GeneralNel | Developer | |
| GeneralPenguin | Developer | |
| GeneralSturgeon | Developer | |
| Generalis | Developer | |
| Generation 5 | Publisher | |
| Generic Games | Developer | |
| Generic Pixels | Developer | |
| GenericToast | Developer | |
| Genericide | Developer | |
| Genesis Soft (Andres Manuel Garcia, Alfonso Gustavo Chico,Miguel Angel Borreguero Quesada) | Developer | |
| Genesis Soft (Angel Garcia Delgado, Miguel Angel Borreguero Quesada) | Developer | |
| Genesis Soft (Julio Casal, Juan Casal, Miguel Angel Borreguero Quesada) | Developer | |
| Genesis Soft (Luis Jorge Garcia, David Burgos Prieto, Alfonso Gustavo Chico) | Developer | |
| Genesis Soft (Luis Jorge Garcia, Miguel Angel Borreguero Quesada) | Developer | |
| Genesis Soft (Miguel Angel Borreguero Quesada) | Developer | |
| Genesis Soft (Sergio Rios) | Developer | |
| Genesis Software | DeveloperPublisher | |
| Genetic Anomalies | Developer | |
| GeneticStudio | Developer | |
| Gengarskhan | Developer | |
| Genius Products | Publisher | |
| Genius Sonority | DeveloperPublisher | |
| Genius-x | Developer | |
| Genki | DeveloperPublisher | |
| Genki Co., Ltd | Developer | |
| Genki JP | Publisher | |
| GenkiAS,JP | Publisher | |
| GenkiJP | Publisher | |
| Genoa | Developer | |
| Genoma Games | Developer | |
| Genoti | Developer | |
| GentalGiants | Developer | |
| Genterprise | DeveloperPublisher | |
| Gentil | Developer | |
| Gentle Games | Developer | |
| GentleCatStudio | Developer | |
| Gentleman Squid Studio | Developer | |
| Gentlemanni | Developer | |
| Gentlymad | Developer | |
| GentooGames | Developer | |
| Genuine Games | Developer | |
| Genus Microprogramming | DeveloperPublisher | |
| GenyaDev | Developer | |
| Geo Factory | Developer | |
| Geo80 | Developer | |
| GeoDunn | Developer | |
| GeoNeoGames | Developer | |
| Geoff Alday | Developer | |