| 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 | |