| Gakuen Utopia Manabi Straight! | — | 1 | — |
| Galactic Civilizations | Stardock | 5 | turn-based strategy video game, 4X |
| Galaxian | Namco | 10 | shoot 'em up |
| Galaxy Angel | — | 3 | science fiction video game |
| Galaxy Angel II | — | 3 | — |
| Galcon | — | — | strategy game, action game |
| Gallop Racer | — | 9 | horse racing video game |
| Games | Epyx | 4 | — |
| Games For Toddlers | Skunk Software | 2 | — |
| Gary Gadget | — | 7 | — |
| Gazza | — | 2 | association football video game |
| Gears of War | — | 11 | post-apocalyptic video game, third-person shooter |
| GekiChuMai | Q122741 | 3 | rhythm game |
| Geneforge | Spiderweb Software | 5 | role-playing video game |
| Geometry Wars | Bizarre Creations | 1 | multidirectional shooter |
| Gex | — | 3 | platform game |
| Ghost in the Shell | — | 3 | — |
| GigaWing | Takumi Corporation | 3 | shoot 'em up |
| Girl Cafe Gun | Seasun | 2 | — |
| GITADORA | — | 1 | music video game |
| Gobliiins | Muriel Tramis, Coktel Vision | 5 | adventure video game |
| Gods: Lands of Infinity | Cypronia | 1 | — |
| Godzilla | — | 1 | kaiju, adventure film |
| Gold Games | — | 4 | — |
| Golden Axe | Q122741, Bandai | 7 | hack and slash, side-scrolling beat 'em up |
| Golden Tee Golf | — | 1 | golf video game |
| Gordi | Compedia | 1 | educational video game |
| Grand Theft Auto | David Jones, Dan Houser, Sam Houser, Rockstar Leeds, Rockstar Lincoln, Rockstar Toronto | 17 | action-adventure game |
| Grandia | Game Arts | 6 | role-playing video game |
| Greatest Nine | — | 1 | baseball video game |
| Gremlins | — | 8 | horror film |
| GROW | — | — | puzzle video game |
| Guild | Level-5 | 3 | shoot 'em up, simulation video game, role-playing video game |
| Guilty Gear | Arc System Works | 14 | airdasher |
| Guitar Hero | — | 16 | rhythm game, music video game |
| Gujian | Aurogon Shanghai | 2 | — |
| Gundam Battle | Artdink | 6 | mecha video game, action game |
| Gungriffon | Game Arts | 4 | — |
| Gunpey | — | — | puzzle video game, music video game |
| Gunslinger Stratos | — | 4 | action game, science fiction video game, third-person shooter |
| Guren | — | 3 | eroge, visual novel, role-playing video game |