| GI-Classic EX | ? | 1998 |
Konami | Commercial |
| Galaxy Games + StarPak 2 cartridge | ? | 1998 |
Creative Electronics & Software | Commercial |
| Galaxy Games + StarPak 3 cartridge | ? | 1998 |
Creative Electronics & Software | Commercial |
| Galaxy Games + StarPak 4 cartridge | ? | 1998 |
Creative Electronics & Software | Commercial |
| Galaxy Games + prototype StarPak 4 cartridge | ? | 1998 |
Creative Electronics & Software | Commercial |
| Golden Tee '98 | ? | 1998 |
Incredible Technologies | Commercial |
| Golden Tee '98 Tournament | ? | 1998 |
Incredible Technologies | Commercial |
| Golden Tee Diamond Edition Tournament | ? | 1998 |
Incredible Technologies | Commercial |
| Gongtit Jiucoi Iron Fortress | HK | 1998 |
Excellent Competence Ltd. | Commercial |
| Good | KR | 1998 |
| Commercial |
| Gourmet Battle Quiz Ryohrioh CooKing | JP | 1998 |
Visco | Commercial |
| Gradius IV | ? | 1998 |
Konami | Commercial |
| Gradius IV: Fukkatsu | ? | 1998 |
Konami | Commercial |
| Guardian Force | ? | 1998 |
Success | Commercial |
| Guardian Storm | ? | 1998 |
Apples Industries | Commercial |
| Guardian Storm | AU | 1998 |
Afega | Commercial |
| Guardian Storm | DE | 1998 |
Afega | Commercial |
| Guardians / Denjin Makai II | ? | 1998 |
Intac Japan | Unlicensed |
| Gunmen Wars | JP | 1998 |
Namco | Commercial |
| Gauntlet Legends | ? | 1998-10 |
Atari Games | Commercial |
| Gunbird 2 | ? | 1998-12 |
Psikyo | Commercial |