| Sony PlayStation CD |  J. League Jikkyou Winning Eleven '98-'99 Model SLPM-86154 | 1998 | Konami Co., Ltd. Japan |
| Redemption mechanical game | Jackpot | 1998 | NAMCO, Ltd. Japan |
| Slot Machine | Jackpot Limbo | 1998 | WMS Gaming, Inc. Chicago, IL, USA |
| Video Slot Machine | Jackpot Party | 1998 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Jackpot Stampede Deluxe | 1998 | WMS Gaming, Inc. Chicago, IL, USA |
| Sony PlayStation CD |  Jaleco Taikenban Special Model SLPM-80276 | 1998 | JALECO Co., Ltd. Japan |
| Slot Machine | Jam | 1998 | Extrema Intersystems |
| Slot Machine | Jamaica | 1998 | NSM Bingen, Germany |
| Nintendo Game Boy Cart. | James Bond 007 Model DMG-AW7E-USA-1 | 1998 | Nintendo Co., Ltd. Japan |
| Nintendo Game Boy Cart. |  James Bond 007 Model DMG-AW7P-EUR | 1998 | Nintendo of Europe GmbH 45496 |
| Sony PlayStation CD | Jan Jan Koi Shimashow - Lovely Pop 2 in 1 Model SLPS-01134 | 1998 | Visco Corp. Kyoto, Japan |
| IBM PC/AT DOS CD |  Jane's Combat Simulations: Attack Pack | 1998 | Electronic Arts CA, USA 14633 |
| IBM PC/AT DOS CD | Jane's Combat Simulations: Longbow Anthology | 1998 | Electronic Arts CA, USA 14633 |
| PC/MS-Windows CD | Jang Bogo-jeon | 1998 | ST Ent. Korea |
| Pachislot | Japan | 1998 | Sammy Corp. Japan |
| PC/MS-Windows CD | Jazz Jackrabbit 2 | 1998 | Gathering of Developers, Inc. |
| IBM PC/AT DOS CD | Jazz Jackrabbit 2 | 1998 | Project Two Interactive BV |
| PC/MS-Windows CD | Jazz Jackrabbit 2 - Holiday Hare 98 | 1998 | Gathering of Developers, Inc. |
| IBM PC/AT DOS CD | Jazz Jackrabbit 2 - The Secret Files | 1998 | Project Two Interactive BV |
| PC/MS-Windows CD | Je-3 Jigu-ui Cain | 1998 | Woongjin Media Korea |
| PC/MS-Windows CD | Jedi Knight - Mysteries of the Sith | 1998 | LucasArts Ent. Co. |
| Arcade Video game | Jeon Sin - Guardian Storm | 1998 | Afega |
| Slot Machine | Jeopardy! | 1998 | IGT International Game Technologies Reno, NV, USA |
| Nintendo 64 cart. | Jeopardy! | 1998 | GameTek, Inc. Miami Beach, FL, USA 43948 |
| PC/MS-Windows CD | Jeopardy! | 1998 | Hasbro Interactive, Inc. |
| Sony PlayStation CD | Jeopardy! Model SLUS-00682 | 1998 | Hasbro Interactive, Inc. |
| Sony PlayStation CD | Jeremy McGrath Supercross 98 Model SLES-01281 | 1998 | Acclaim Ent., Inc. Glen Cove, NY, USA |
| Sony PlayStation CD | Jeremy McGrath Supercross 98 Model SLUS-00479 | 1998 | Acclaim Ent., Inc. Glen Cove, NY, USA |
| Sony PlayStation CD | Jersey Devil Model SCUS-94907 | 1998 | Sony Computer Ent. America SCEA CA, USA |
| Sony PlayStation CD | Jet Moto '98 Model SCPS-10063 | 1998 | Sony Computer Ent., Inc. SCEI Japan |
| Sony PlayStation CD | Jet Rider 2 Model SLES-01045 | 1998 | Sony Computer Ent. Europe SCEE |
| Cambridge Z88 Cart. | Jet Set Willy Z88 Hb | 1998 | Unknown |
| Sinclair ZX Spectrum cass. | Jet Set Willy: Ivy Hb | 1998 | Filsoft |
| Sinclair ZX Spectrum cass. | Jet Set Willy: The Continuing Adventures Hb | 1998 | Britton, Adam |
| PC/MS-Windows CD | Jetfighter Full Burn | 1998 | Take-Two Interactive |
| Sony PlayStation CD | JGTC - All-Japan Grand Touring Car Championship Model SLPS-01428 | 1998 | TYO |
| Sony PlayStation CD | Jikki Pachi-Slot Tettei Kouryaku - Speed-CR Kinkakuji 3 Model SLPS-01538 | 1998 | Culture Publishers |
| Sony PlayStation CD | Jikki Pachi-Slot Tettei Kouryaku - Yamasa Collection Model SLPS-01339 | 1998 | Culture Publishers |
| Sony PlayStation CD | Jikkyou American Baseball 2 Model SLPM-86119 | 1998 | Konami Co., Ltd. Japan |
| Sony PlayStation CD | Jikkyou American Baseball Model SLPM-86046 | 1998 | Konami Co., Ltd. Japan |
