Mega Drive / Genesis - G
- Gadget Twins
- Gaiares
- Gain Ground
- Galahad
- Galaxy Force 2
- Garfield - Caught in the Act
- Gargoyles
- Garou Densetsu
- Garou Densetsu 2
- Gauntlet 4
- General Chaos
- Generations Lost
- George Foreman's KO Boxing
- Ghostbusters
- Ghouls 'N Ghosts
- Ghouls 'n' Ghosts
- Ghouls N' Ghosts
- Global Gladiators
- Go! Go! Tank
- Gods
- Golden Axe
- Golden Axe 1
- Golden Axe 2
- Golden Axe 3
- Goofy's Hysterical History Tour
- Granada
- Grand Slam
- Great Circus Mystery
- Great Circus Mystery Starring Mickey & Minnie
- Great Waldo Search
- Greatest Heavyweights
- Greendog - the Beach Surfer Dude
- Greendog - the Beached Surfer Dude
- Grind Master
- Grind Stormer
- Gunstar Heroes