| Title | Year | Genre |
|---|---|---|
| Macross - True Love Song | 2000 | RPG |
| Magical Drop for WonderSwan | 1999 | Puzzle |
| Mahjong Touryuumon | 1999 | Mahjong |
| Makai Toushi Sa-Ga | 2002 | RPG |
| Makaimura for WonderSwan | 1999 | Action |
| Medarot Perfect Edition - Kabuto Version | 1999 | RPG |
| Medarot Perfect Edition - Kuwagata Version | 1999 | RPG |
| Meitantei Conan - Majutsushi no Chousenjou! | 1999 | Adventure |
| Meitantei Conan - Nishi no Meitantei Saidai no Kiki! | 2000 | Adventure |
| Meitantei Conan - Yuugure no Oujo | 2001 | Adventure |
| Memories Off - Festa | 2001 | Cards |
| Metakomi Theraphy - Nee Kiite! | 2000 | Quiz |
| Mikeneko Holmes - Ghost Panic | 2001 | Adventure |
| Mingle Magnet | 1999 | Puzzle |
| Mobile Suit Gundam MSVS | 1999 | Strategy |
| Moero!! Pro Yakyuu Rookies | 2000 | Baseball |
| Morita Shougi for WonderSwan | 1999 | Puzzle |
| Mr. Driller | 2001 | Arcade |
