| Nintendo Game Boy Cart. |  Maui Mallard Model DMG-AMIE-USA | 1998 | SUNSOFT Sun Corp. of America IL, USA |
| Sony PlayStation CD |  Mawatte Mucho! Taikenban Campaign-tsuki Model SLPM-80232 | 1998 | Tohoku Shinsha |
| Sony PlayStation CD | Mawatte Mucho! Model SLPS-01359 | 1998 | Tohoku Shinsha |
| Sega Saturn CD |  Maximum Force Model T-25417H-50 | 1998 | GT Interactive Soft. Corp. NY, USA |
| PC/MS-Windows CD | Mayday | 1998 | JoWooD Productions AG |
| PC/MS-Windows CD | MechCommander | 1998 | MicroProse, Ltd. Bristol, UK 015352 |
| Nintendo Game Boy Cart. | Medarot - Parts Collection 2 Model DMG-A4MJ-JPN | 1998 | Imagineer Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Medarot - Parts Collection Model DMG-AMPJ-JPN | 1998 | Imagineer Co., Ltd. Japan |
| Commodore C64 disk | Medical Daffy-Nitions | 1998 | J&F Publishing, Inc. |
| Sony PlayStation CD | MediEvil Demo Model SCED-01527 | 1998 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation CD | MediEvil Demo Model SCUS-94291 | 1998 | Sony Computer Ent. America SCEA CA, USA |
| Sony PlayStation CD | MediEvil Special Demo Model SCED-01571 | 1998 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation CD | MediEvil Model SCES-00311 | 1998 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation CD | MediEvil Model SCES-01492 | 1998 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation CD | MediEvil Model SCES-01493 | 1998 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation CD | MediEvil Model SCES-01494 | 1998 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation CD | MediEvil Model SCES-01495 | 1998 | Sony Computer Ent. Europe SCEE |
| Sony PlayStation CD | MediEvil Model SCUS-94227 | 1998 | Sony Computer Ent. America SCEA CA, USA |
| PC/MS-Windows CD | Medusa | 1998 | Dream Tech Korea |
| Sony PlayStation CD | Mega Man - Battle & Chase Model SLES-00766 | 1998 | Infogrames Distribution 014762 |
| Sony PlayStation CD | Mega Man Legends Model SLES-01485 | 1998 | Virgin Interactive Ent., Ltd. UK 013715 |
| Sony PlayStation CD | Mega Man Legends Model SLUS-00603 | 1998 | Capcom Ent., Inc. USA 13388 |
| PC/MS-Windows CD | Mega Man X4 | 1998 | Capcom Ent., Inc. USA 13388 |
| Arcade Video game | Megatouch 5 Tournament Edition | 1998 | Merit Industries, Inc. Bensalem, PA, USA |
| Arcade Video game | Megatouch 5 Turnier Version | 1998 | Merit Industries, Inc. Bensalem, PA, USA |
| Arcade Video game | Megatouch 6 | 1998 | Merit Industries, Inc. Bensalem, PA, USA |
| Arcade Video game | Megatouch XL 5000 | 1998 | Merit Industries, Inc. Bensalem, PA, USA |
| Arcade Video game | Megatouch XL Super 5000 | 1998 | Merit Industries, Inc. Bensalem, PA, USA |
| IBM PC DOS pack. | MegaZeux: Bernard the Bard Hb | 1998 | LaMar, Jeremy |
| IBM PC DOS pack. | MegaZeux: Cans III Hb | 1998 | Autumn Dreams |
| IBM PC DOS pack. | MegaZeux: Gates The Puzzles Hb | 1998 | MenTaLboY |
| IBM PC DOS pack. | MegaZeux: Mini Darkness Hb | 1998 | Autumn Dreams |
| IBM PC DOS pack. | MegaZeux: nWo Hollywood Hb | 1998 | Duky Inc. |
| Pachinko | Megumi Kohmuten DX | 1998 | Kyoraku Sangyo Japan |
| Pachinko | Megumi Kohmuten FX2 | 1998 | Kyoraku Sangyo Japan |
| Nintendo Game Boy Cart. | Meitantei Conan - Giwaku no Gouka Ressha Model DMG-ADKJ-JPN | 1998 | Bandai Co., Ltd. Japan |
| Sony PlayStation CD | Meitantei Conan Model SLPS-01690 | 1998 | Bandai Co., Ltd. Japan |
| Redemption mechanical game | Mekata de Donpisha | 1998 | NAMCO, Ltd. Japan |
| Pachislot | Melon Panic | 1998 | Sammy Corp. Japan |
| SNK Neo-Geo Pocket cart. | Melon-chan no Seichou Nikki Model NEOP00040 | 1998 | SNK Corp. Shin Nihon Kikaku Japan |
