| G1 Jockey | 1 | horse racing video game | Koei |
| Gakuen Heaven | 1 | visual novel, Boys' Love game, LGBT-themed video game | — |
| Galactic Civilizations | 5 | turn-based strategy video game, 4X | Strategy First |
| Galaxian | 10 | shoot 'em up | — |
| Galaxy Angel | 3 | science fiction video game | — |
| Galaxy Fräulein Yuna | 6 | — | — |
| Galcon | — | strategy game, action game | — |
| Gallop Racer | 9 | horse racing video game | — |
| Gamebreak | 2 | party video game | Disney Interactive Studios, THQ |
| Games | 4 | — | — |
| Games For Toddlers | 2 | — | Skunk Software |
| Gazza | 2 | association football video game | — |
| Gears of War | 11 | post-apocalyptic video game, third-person shooter | — |
| Geneforge | 5 | role-playing video game | — |
| Geometry Wars | 1 | multidirectional shooter | — |
| Gex | 3 | platform game | Microsoft |
| Ghost Hunter | 2 | — | Matsushita Electric Industrial Co., Ltd. |
| Ghosts 'n Goblins | 4 | shoot 'em up, platform game | — |
| Giant | — | business simulation game | JoWooD Entertainment |
| GigaWing | 3 | shoot 'em up | Capcom |
| Ginsei Shogi | — | — | SilverStarJapan Co., Ltd. |
| Girl Cafe Gun | 2 | — | — |
| GITADORA | 1 | music video game | — |
| Glory of Heracles | 6 | role-playing video game | — |
| Gobliiins | 5 | adventure video game | — |
| Gods: Lands of Infinity | 1 | — | — |
| Godzilla | 1 | kaiju, adventure film | — |
| Gold Box | 14 | role-playing video game | — |
| Gold Games | 4 | — | TopWare Interactive |
| Golden Axe | 7 | hack and slash, side-scrolling beat 'em up | — |
| Golden Sun | 3 | role-playing video game | — |
| Golden Tee Golf | 1 | golf video game | — |
| Gordi | 1 | educational video game | — |
| Gothic | 10 | role-playing video game | THQ Nordic, Game Factory Interactive, Snowball Studios, Akella, Russobit-M, JoWooD Entertainment, 1C Company |
| Grand Prix | 4 | racing video game | MicroProse |
| Grand Theft Auto | 17 | action-adventure game | Capcom |
| Grandia | 6 | role-playing video game | — |
| Greatest Nine | 1 | baseball video game | — |
| Green Green | — | eroge, bishōjo game, visual novel | — |
| Gremlins | 8 | horror film | — |
| GROW | — | puzzle video game | — |
| Guild | 3 | shoot 'em up, simulation video game, role-playing video game | — |
| Guilty Gear | 14 | airdasher | — |
| Guitar Hero | 16 | rhythm game, music video game | — |
| Gujian | 2 | — | — |
| Gundam Battle | 6 | mecha video game, action game | — |
| Gundam: Battle Assault | 5 | fighting game | Bandai |
| Gungriffon | 4 | — | — |
| Gunpey | — | puzzle video game, music video game | Bandai Namco Entertainment |
| Gunslinger Stratos | 4 | action game, science fiction video game, third-person shooter | — |
| Guren | 3 | eroge, visual novel, role-playing video game | — |
| Gurren Lagann | 1 | — | — |