| Sony PlayStation CD |  Mortal Kombat 4 Model SLUS-00605 | 1998 | Midway Home Ent. |
| Sony PlayStation CD |  Mortal Kombat Trilogy Model SLPS-00791 | 1998 | Softbank Corp. Japan |
| PC/MS-Windows CD | Moto Racer 2 | 1998 | Electronic Arts CA, USA 14633 |
| Sony PlayStation CD |  Moto Racer 2 Model SLED-01552 | 1998 | Electronic Arts CA, USA 14633 |
| Sony PlayStation CD | Moto Racer 2 Model SLES-01184 | 1998 | Electronic Arts CA, USA 14633 |
| Sony PlayStation CD | Moto Racer 2 Model SLUS-00738 | 1998 | Electronic Arts CA, USA 14633 |
| PC/MS-Windows CD | Motocross Madness | 1998 | Microsoft |
| PC/MS-Windows CD | Motor Mash | 1998 | Ocean Soft., Ltd. 13156 |
| PC/MS-Windows CD | Motorhead | 1998 | Gremlin Interactive, Ltd. 013658 |
| Sony PlayStation CD | Motorhead Model SLES-00556 | 1998 | Gremlin Interactive, Ltd. 013658 |
| Sony PlayStation CD | Motorhead Model SLUS-00717 | 1998 | Fox Interactive |
| PC/MS-Windows CD | Mots Croisés 98 | 1998 | Goto Soft. |
| PC/MS-Windows CD | Mots Fléchés 98 | 1998 | Goto Soft. |
| Sega Saturn CD | Motteke Tamago with Ganbare! Kamonohashi | 1998 | Naxat Soft. Japan |
| Sony PlayStation CD | Motteke Tamago with Ganbare! Kamonohashi Model SLPS-01242 | 1998 | Naxat Soft. Japan |
| Sony PlayStation CD | Mouri Motonari - Chikai no Sanshi Model SLPS-01285 | 1998 | KOEI Co., Ltd. Japan |
| Video Slot Machine | Movie Card | 1998 | Golden Games |
| Sony PlayStation CD | MTB Dirt Cross Model SLPS-01467 | 1998 | Sammy Corp. Japan |
| Sony PlayStation CD | MTV's Beavis and Butt-Head - Virtual Aho Shoukougun Model SLPS-01219 | 1998 | B-Factory Co., Ltd. Japan |
| Sega Pico game | Muat Tago Galka | 1998 | Samsung Korea |
| Sega Saturn CD | Mujintou Monogatari R - Futari no Love Love Island 18 | 1998 | KSS Media Ent. Co. Japan |
| Arcade Video game | Multi 5 | 1998 | Yun Sung Korea |
| Arcade Video game | Multi Champ | 1998 | ESD Excellent Soft Design |
| Video Slot Machine | Multi Game Italian Ver. 3.9.8 - 1.5.7 | 1998 | EGD |
| Atari ST disk | Mummies Playtime | 1998 | Silly Soft |
| Nintendo 64 cart. | Mundial Ronaldinho Soccer 64 | 1998 | Unknown |
| Sega Saturn CD | Murakoshi Seikai no Bakuchou Nihon Rettou | 1998 | Victor Interactive Soft., Inc. |
| Sony PlayStation CD | Murakoshi Seikai no Bakuchou Nihon Rettou Model SLPM-80253 | 1998 | Victor Interactive Soft., Inc. |
| Sony PlayStation CD | Murakoshi Seikai no Bakuchou Nihon Rettou Model SLPS-01392 | 1998 | Victor Interactive Soft., Inc. |
| Pachislot | Muscle Tomato | 1998 | IGT-Japan KK Japan |
| Arcade Video game |  Must Shoot TV | 1998 | Incredible Technologies, Inc. Rolling Meadows, IL, USA |
| Sega Saturn CD | My Fair Lady - Virtual Mahjong 2 | 1998 | Micronet Co., Ltd. Japan |
| Sony PlayStation CD | Mystic Mind - Yureru Omoi Model SLPS-01562~3 | 1998 | MYCOM Japan |
| Nintendo 64 cart. | Mystical Ninja Starring Goemon | 1998 | Konami Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Mystical Ninja Starring Goemon Model DMG-AGDE-USA | 1998 | Konami Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Mystical Ninja Starring Goemon Model DMG-AGDP-EUR | 1998 | Konami Co., Ltd. Japan |
| PC/MS-Windows CD | Myth II - Soulblighter | 1998 | Eidos Interactive |
| PC/MS-Windows CD | N.I.C.E. 2 | 1998 | Magic Bytes Germany |
| PC/MS-Windows CD | N.I.C.E. 2 Tune-Up | 1998 | Magic Bytes Germany |
| Sony PlayStation CD | N2O - Nitrous Oxide Model SLUS-00637 | 1998 | Fox Interactive |
