 | Gratia - Second Earth (91022-10 version) (clone of: gratia) | 1996 | Jaleco | gratiaa | Shooter / Flying Horizontal | 0.00 |
| Gratia - Second Earth (92047-01 version) | 1996 | Jaleco | gratia | Shooter / Flying Horizontal | 8.00 |
 | Gravitar (prototype) (clone of: gravitar) | 1982 | Atari | gravp | Shooter / Field | 0.00 |
| Gravitar (version 2) (clone of: gravitar) | 1982 | Atari | gravitar2 | | 0.00 |
| Gravitar (version 3) | 1982 | Atari | gravitar | Shooter / Field | 6.94 |
 | Great 1000 Miles Rally 2 USA (95/05/18) (clone of: gtmr2) | 1995 | Kaneko | gtmr2u | Driving / Race | 0.00 |
 | Great 1000 Miles Rally: Evolution Model!!! (94/09/06) (clone of: gtmr) | 1994 | Kaneko | gtmre | Driving / Race | 10.00 |
| Great 1000 Miles Rally: U.S.A Version! (94/09/06) (clone of: gtmr) | 1994 | Kaneko | gtmrusa | Driving / Race | 0.00 |
| | Great Escape (Maygay) (EPOCH) (1.1, set 1) | 2002 | Maygay | ep_gresc | | 0.00 |
| | Great Escape (Maygay) (EPOCH) (1.1, set 2) (clone of: ep_gresc) | 2002 | Maygay | ep_gresca | | 0.00 |
| | Great Escape 2 (Maygay) (EPOCH) (2.1, set 1) | 2002 | Maygay | ep_gesc2 | | 0.00 |
| | Great Escape 2 (Maygay) (EPOCH) (2.1, set 2) (clone of: ep_gesc2) | 2002 | Maygay | ep_gesc2a | | 0.00 |
| | Great Escape Club (Maygay) (EPOCH) (1.9, set 3) (clone of: ep_geclb) | 1998 | Maygay | ep_geclbb | | 0.00 |
| | Great Escape Club (Maygay) (EPOCH) (1.C, set 1) | 1999 | Maygay | ep_geclb | | 0.00 |
| | Great Escape Club (Maygay) (EPOCH) (1.C, set 2) (clone of: ep_geclb) | 1999 | Maygay | ep_geclba | | 0.00 |
| | Great Escape, The (Maygay) (M1A/B) | 1969 | Maygay | m1gresc | | 0.00 |
| | Great Football (Mega-Tech, SMS based) | 1987 | Sega | mt_gfoot | | 0.00 |
 | Great Golf (Mega-Tech, SMS based) | 1987 | Sega | mt_ggolf | Sports / Golf | 0.00 |
 | Great Guns | 1983 | Stern Electronics | greatgun | Shooter / Gun | 0.00 |
 | Great Gurianos (Japan?) (clone of: gladiatr) | 1986 | Taito Corporation | greatgur | Fighter / 2D | 0.00 |
