| Matching Maker DS | 2008 | nds |
| Me & My Pet | 2010 | ps3 |
| Me & My Pets 3D | 2014 | 3ds |
| MechWarrior 5: Mercenaries | 2021 | xboxone |
| Mega Mall Story | 2019 | ps4, switch |
| Megaquarium | 2019 | ps4, switch, xboxone |
| Meguri Ai shite | 1999 | ps1 |
| Mein Eigener Tierbaby-Zoo | 2010 | nds |
| Mein neues Leben - Abenteuer auf Tropicana | 2011 | wii |
| Meine Liebe - Yuubinaru Kioku | 2004 | ps2 |
| Meine Liebe Zwei - Hokori to Seigi to Ai | 2006 | ps2 |
| Meine Tierarztpraxis in Australien | 2008 | nds |
| Meine Tierpension | 2006 | gba |
| Meine Tierpension 2 | 2008 | nds |
| Melon-chan no Seichou Nikki | 1998 | ngp |
| MeltyLancer - Ginga Shoujo Keisatsu 2086 | 1996 | ps1 |
| MeltyLancer - Ginga Shoujo Keisatsu 2086 | 1996 | saturn |
| MeltyLancer - Re-inforce | 1997 | ps1 |
| MeltyLancer - Re-inforce | 1998 | saturn |
| MeltyLancer - The 3rd Planet | 1999 | ps1 |
| Menkyo o Torou | 2000 | ps1 |
| Merchant of the Skies | 2020 | switch |
| Merriment Carrying Caravan | 1998 | ps1 |
| Metal Angel | 1993 | pcengine |
| Metal Angel 3 | 1997 | ps1 |
| Metal Head | 1995 | 32x |
| Mezase! Meimon Yakyuubu | 1999 | ps1 |
| Mezase! Skymark - Challenge Airline Pilot | 1999 | ps1 |
| Mi Escuela de Equitacion | 2008 | nds |
| Miami Nights - Singles in the City | 2008 | nds |
| Mig-29 Fighter Pilot | 1993 | genesis |
| Miitopia | 2021 | switch |
| Mijn Dierenpension 2 | 2008 | nds |
| Mijn Dierenpraktijk | 2007 | nds |
| Mijn Dierenschool | 2007 | nds |
| Mijn Droomjob - Verpleegster | 2008 | nds |
| Military Madness | 2010 | wii |
| Milky Season | 2002 | dreamcast, ps1 |
| Million Classic | 1999 | ps1 |
| Minecraft - Story Mode - A Telltale Games Series - The Complete Adventure | | ps3, xbox360 |
| Mineko's Night Market | 2023 | switch |
| MiniCopter Adventure Flight | 2007 | wii |
| Miniclip Sushi Go-Round | 2010 | wii |
| Minna no Shiiku Kyoushitsu - Kuwagata-hen | 2001 | ps1 |
| Minna no Suizokukan | 2010 | nds |
| Miracle Snack Shop | 2021 | switch |
| Misa no Mahou Monogatari | 1998 | ps1 |
| Misaki Aggressive! | 1998 | ps1 |
| Mission Runway | 2008 | nds |
| Mitsumete Knight | 1998 | ps1 |
| Miyake Yuji Produce - Kiseki no Maya Uranai | 1999 | ps1 |
| Mobile Pro Yakyuu - Kantoku no Saihai | 2001 | gba |
| Mobile Suit Gundam - Lost War Chronicles | 2002 | ps2 |
| Mobile Suit Gundam - Side Stories | 2014 | ps3 |
| Mobile Suit Gundam MSVS | 1999 | ws |
| Mobile Tomodachi | 2002 | ps1 |
| Mobile Train Simulator - Keisei Toei Asakusa Keikyuusen | 2006 | psp |
| Mobile Train Simulator plus Densha de Go! Tokyo Kyuukou-hen | 2005 | psp |
| Mokjjangiyagi - Colobockle Station | 2009 | nds |
| Mokjjangiyagi - Colobockle Station for Girl | 2009 | nds |
| Momotaro Dentetsu: Showa, Heisei, Reiwa Mo Teiban! | 2020 | switch |
| The Money Game | 1988 | fds, nes |
| The Money Game II - Kabutochou no Kiseki | 1989 | nes |
| Monster Farm | 2001 | ps2 |
| Monster Garage | 2004 | xbox |
| Monster Rancher 3 | 2001 | ps2 |
| Monster Rancher 4 | 2003 | ps2 |
| Monster Rancher Advance | 2001 | gba |
| Monster Rancher Advance 2 | 2002 | gba |
| Monster Rancher Evo | 2005 | ps2 |
| Mori no Cafeteria DS - Oshare na Cafe Recipe | 2008 | nds |
| Motion Gravure Series - Kitagawa Tomomi | 2003 | ps2 |
| Motion Gravure Series - Megumi | 2003 | ps2 |
| Motion Gravure Series - Mori Hiroko | 2003 | ps2 |
| Motion Gravure Series - Nemoto Harumi | 2003 | ps2 |
| Motoko-chan no Wonder Kitchen | 1993 | snes |
| Motto! Hamster to Kurasou - Akachan ga Umareta yo | 2009 | nds |
| Motto! Nyan to Wonderful 2 | 1999 | ps1 |
| Moxie Girlz | 2011 | nds |
| Mujintou Monogatari R - Futari no Love Love Island | 1998 | saturn |
| Music Star - I Wanna Be a Popstar | 2004 | nds |
| Mutsu - Water Looper Mutsu | 2001 | gba |
| My Amusement Park | 2010 | nds |
| My Animal Centre | 2008 | nds |
| My Animal Centre | 2009 | wii |
| My Animal Centre - Baby Animals | 2009 | nds |
| My Animal Centre in Africa | 2006 | gba, nds |
| My Aquarium | 2008 | wii |
| My Aquarium 2 | 2010 | wii |
| My Arctic Farm | 2014 | wiiu |
| My Baby - Boy | 2008 | nds |
| My Baby - Girl | 2008 | nds |
| My Baby 2 | 2009 | nds, wii |
| My Baby 3 & Friends | 2010 | nds |
| My Baby Pet Hotel 3D | 2013 | 3ds |
| My Ballet Studio | 2009 | nds |
| My Best Friends - Cats & Dogs | 2007 | nds |
| My Boyfriend | 2008 | nds |
| My Boyfriend - Der Sommer Meines Lebens | 2008 | nds |
| My Boyfriend - Verliebt in einen Star | 2009 | nds |