| Game Name | System |
|---|
| Griffon (Videotron bootleg of Phoenix) | MAME |
| Grillo Parlante (Italy) | MAME |
| Grind Stormer | MAME |
| Grind Stormer (older set) | MAME |
| Grizzly (10214711, NSW/ACT) | MAME |
| Grobda (New Ver.) | MAME |
| Grobda (Old Ver. set 1) | MAME |
| Grobda (Old Ver. set 2) | MAME |
| Groove on Fight - Gouketsuji Ichizoku 3 (J 970416 V1.001) | MAME |
| Ground Effects / Super Ground Effects (Japan) | MAME |
| Growl (US) | MAME |
| Growl (World) | MAME |
| Growl (World, Rev 1) | MAME |
| Growl (World, prototype) | MAME |
| Grudge Match (Yankee Game Technology) | MAME |
| Grudge Match (prototype) | MAME |
| Gryzor (set 1) | MAME |
| Gryzor (set 2) | MAME |
| Guardian (US) | MAME |
| Guardian Force (JUET 980318 V0.105) | MAME |
| Guardian Storm (Germany) | MAME |
| Guardian Storm (horizontal, not encrypted) | MAME |
| Guardian Storm (vertical) | MAME |
| Guardians / Denjin Makai II | MAME |
| Guardians of the 'Hood | MAME |
| Guerrilla War (Joystick hack bootleg) | MAME |
| Guerrilla War (US) | MAME |
| Guerrilla War (Version 1) | MAME |
| Guevara (Japan) | MAME |
| Guided Missile | MAME |
| Guilty Gear Isuka | MAME |
| Guilty Gear X | MAME |
| Guilty Gear X ver. 1.5 | MAME |
| Guilty Gear XX #Reload (Japan) (GDL-0019) | MAME |
| Guilty Gear XX #Reload (Japan, Rev A) (GDL-0019A) | MAME |
| Guilty Gear XX (GDL-0011) | MAME |
| Guilty Gear XX Accent Core (Japan) (GDL-0041) | MAME |
| Guilty Gear XX Slash (Japan, Rev A) (GDL-0033A) | MAME |
| Guinness Book Of Records (Maygay M2) | MAME |
| Guitar Freaks (GQ886 VER. AAC) | MAME |
| Guitar Freaks (GQ886 VER. EAC) | MAME |
| Guitar Freaks (GQ886 VER. JAC) | MAME |
| Guitar Freaks (GQ886 VER. UAC) | MAME |
| Guitar Freaks 10th Mix (G*D10 VER. JAA) | MAME |
| Guitar Freaks 10th Mix (G*D10 VER. JAB) | MAME |
| Guitar Freaks 10th Mix eAmusement (G*D10 VER. JBA) | MAME |
| Guitar Freaks 11th Mix (G*D39 VER. JAA) | MAME |
| Guitar Freaks 2nd Mix Ver 1.01 (GQ883 VER. JAD) | MAME |
| Guitar Freaks 3rd Mix (GE949 VER. JAB) | MAME |
| Guitar Freaks 3rd Mix (GE949 VER. JAC) | MAME |
| Guitar Freaks 3rd Mix - security cassette versionup (949JAZ02) | MAME |
| Guitar Freaks 4th Mix (G*A24 VER. JAA) | MAME |
| Guitar Freaks 5th Mix (G*A26 VER. JAA) | MAME |
| Guitar Freaks 6th Mix (G*B06 VER. JAA) | MAME |
| Guitar Freaks 7th Mix (G*B17 VER. JAA) | MAME |
| Guitar Freaks 8th Mix (G*C08 VER. JAA) | MAME |
| Guitar Freaks 8th Mix power-up ver. (G*C08 VER. JBA) | MAME |
| Guitar Freaks 9th Mix (G*C39 VER. JAA) | MAME |
| Gulf Storm (Korea) | MAME |
| Gulf Storm (Media Shoji) | MAME |
| Gulf Storm (set 1) | MAME |
| Gulf Storm (set 2) | MAME |
| Gulf Storm (set 3) | MAME |
| Gulf War II (set 1) | MAME |
| Gulf War II (set 2) | MAME |
| Gumbo | MAME |
| Gun & Frontier (World) | MAME |
| Gun Ball (Japan) | MAME |
| Gun Bullet (Japan, GN1) | MAME |
| Gun Bullet (World, GN3 Rev B) | MAME |
| Gun Champ | MAME |
| Gun Champ (newer, Super Shot hardware) | MAME |
| Gun Dealer | MAME |
| Gun Dealer '94 | MAME |
| Gun Dealer (Japan) | MAME |
| Gun Dealer (alt card set) | MAME |
| Gun Dealer (bootleg) | MAME |
| Gun Fight (set 1) | MAME |
| Gun Fight (set 2) | MAME |
| Gun Force II (US) | MAME |
| Gun Frontier (Japan) | MAME |
| Gun Gabacho (Japan) | MAME |
| Gun Hard (Japan) | MAME |
| Gun Master | MAME |
| Gun Smoke (Barcrest) (Dutch) (MPU4) | MAME |
| Gun Smoke (Barcrest) (Dutch, alt sound roms) (MPU4) | MAME |
| Gun Survivor 2 Biohazard Code: Veronica (Asia, BHF2 Ver.E) | MAME |
| Gun Survivor 2 Biohazard Code: Veronica (Japan, BHF1 Ver.E) | MAME |
| Gun.Smoke (Japan, 851115) | MAME |
| Gun.Smoke (US, 851115, set 1) | MAME |
| Gun.Smoke (US, 851115, set 2) | MAME |
| Gun.Smoke (US, 860408) | MAME |
| Gun.Smoke (World, 851115) | MAME |
| Gun.Smoke (World, 851115) (bootleg) | MAME |
| GunMania (GL906 VER. JAA) | MAME |
| GunNail (28th May. 1992) | MAME |
| Gunbalina (Japan, GNN1 Ver.A) | MAME |
| Gunbarich | MAME |
| Gunbarl (Japan, GNB4/VER.A) | MAME |
| Gunbird (Japan) | MAME |
