| Monster World IV | 1994 | genesis |
| Montana Jones | 1995 | 3do |
| Moomin-dani no Okurimono | 2009 | nds |
| Moon Cradle | 1997 | saturn |
| Moon Crystal | 1992 | nes |
| Moon Harvest | 2023 | nes |
| Moon: Remix RPG Adventure | 1997 | ps1, switch |
| Moonlight Syndrome | 1997 | ps1 |
| Moons of Madness | 2020 | ps4, xboxone |
| The Mooseman | 2018 | ps4, xboxone |
| More Dark Fables from Aesop | 1992 | cdi |
| Mortimer Beckett and the Secrets of Spooky Manor | 2008 | wii |
| The Mortuary Assistant | 2023 | switch |
| Mosaic | 2020 | ps4, switch, xboxone |
| Moses - Bound for the Promised Land | 1992 | cdi |
| Moshi Monsters - Moshlings Theme Park | 2012 | 3ds, nds |
| Moshi, Kono Sekai ni Kamisama ga Iru to Suru Naraba | 2016 | vita |
| Mother Goose no Himitsu no Yakata - Blue Label | 2011 | psp |
| Mother Goose no Himitsu no Yakata - Nursery Rhymes for you | | psp |
| Motto Nuga-Cel! Nurture Garment Celebration | 2010 | psp |
| Motto! SoniComi - More Communication with Sonico | 2014 | ps3 |
| Moujuutsukai to Oujisama | 2010 | ps2 |
| Moujuutsukai to Oujisama - Snow Bride | 2011 | ps2 |
| Moujuutsukai to Oujisama - Snow Bride - Portable | 2012 | psp |
| Moujuutsukai to Oujisama Portable | 2011 | psp |
| Mouri Motonari - Chikai no Sanshi | 1997 | ps1, saturn |
| Mozart Requiem | 2021 | ps4 |
| Mr. Pumpkin Adventure | 2016 | wiiu |
| Mr. Pumpkin's Adventure | 2015 | vita |
| Mr. Pumpkin's Adventure | 2017 | xboxone |
| Mujintou Monogatari | 1996 | snes |
| Mummi og de Mystiske Hylene | 2008 | nds |
| Murder Club - Honkaku Mystery Adventure | 1989 | nes |
| Murder Detective: Jack the Ripper | 2019 | ps4, switch |
| Murder Mansion | 2025 | gbc |
| Murder Mystery Machine | 2021 | switch |
| Murder by Numbers | 2020 | switch |
| Murphy da yo Zen'in Shuugou!! | 1994 | 3do |
| Mushishi - Ame Furu Sato | 2008 | nds |
| Musicus! | 2022 | ps4, switch |
| Musketeer - Le Sang des Chevaliers | 2011 | psp |
| MutaJuice | 2006 | psp |
| Mutant Year Zero: Road to Eden | 2018 | ps4, switch, xboxone |
| Mutazione | 2019 | ps4 |
| Mutazione | 2021 | switch |
| Muteki Ou Tri-Zenon | 2001 | gbc |
| Muteki-ou Tri-Zenon | 2001 | ps1 |
| Mutsu-boshi Kirari - Hoshifuru Miyako | 2006 | ps2 |
| Muv-Luv | 2011 | ps3, vita, xbox360 |
| Muv-Luv Alternative | 2011 | ps3, vita, xbox360 |
| Muv-Luv Alternative - Total Eclipse | 2013 | ps3, xbox360 |
| Muv-Luv Alternative Total Eclipse - Teito Moyu | 2016 | vita |
| Muv-Luv Photonflowers | 2014 | ps3 |
| Muv-Luv Photonmelodies | 2014 | ps3 |
| My Aunt Is a Witch | 2020 | vita |
| My Big Sister | 2019 | xboxone |
| My Brother Rabbit | 2018 | ps4, xboxone |
| My Butler | 2020 | switch |
| My Child Lebensborn | | ps4 |
| My Girlfriend is a Mermaid!? | 2019 | switch |
| My Little Pony - Crystal Princess - The Runaway Rainbow | 2006 | gba |
| My Little Pony - Pinkie Pie's Party | 2008 | nds |
| My Merry May | 2002 | dreamcast, ps2 |
| My Merry May with Be | 2005 | ps2 |
| My Merry May with Be | 2010 | psp |
| My Merry Maybe | 2003 | dreamcast, ps2 |
| My Name Is Mayo | 2016 | vita |
| My Nintendo Picross - The Legend of Zelda - Twilight Princess | 2016 | 3ds |
| My Secret Pets | 2020 | switch |
| Myself; Yourself | 2007 | ps2 |
| Myself; Yourself - Sorezore no Finale | 2009 | ps2 |
| Myst | 1994 | 3do, 3ds, cdi, jaguarcd, nds, ps1, saturn |
| Myst | 2006 | psp |
| Myst III - Exile | 2002 | ps2, xbox |
| Myst IV - Revelation | 2005 | xbox |
| Mystereet - Yasogami Kaoru no Jiken File | 2006 | ps2 |
| Mystereet Portable - Yasogami Kaoru no Chousen! | 2008 | psp |
| The Mysterious Case of Dr. Jekyll & Mr. Hyde | 2004 | nds |
| Mystery Case Files - Return to Ravenhearst | 2014 | 3ds |
| Mystery Case Files - The Malgrave Incident | 2011 | wii |
| Mystery Detective | 2006 | nds |
| Mystery Mansion - Das Haus der verlorenen Seelen | 1996 | saturn |
| Mystery Murders - Jack the Ripper | 2013 | 3ds |
| Mystery Tales - Time Travel | 2009 | nds |
| The Mystery of Whiterock Castle | 2011 | wii |
| The Mystery of Woolley Mountain | 2019 | switch |
| NCIS - Based on the TV Series | 2011 | ps3, xbox360 |
| NCIS - Based on the TV Series | 2011 | wii |
| NCIS 3D | 2011 | 3ds |
| NFL's Greatest - San Francisco vs. Dallas 1978-1993 | 1993 | segacd |
| NadePro!! Kisama mo Seiyuu Yatte Miro! | 2009 | ps2 |
| Nainai no Meitantei | 1999 | ps1 |
| Nakayoshi to Issho | 1993 | nes |
| Nakoruru - Ano Hito kara no Okurimono | 2002 | dreamcast |
| Nanairo Reincarnation | 2015 | vita |
| Nanatsu Kaze no Shima Monogatari | 1997 | saturn |
| Nanatsu no Hikan | 1998 | ps1 |
| Nanatsu no Hikan | 1996 | saturn |
| Nanatsuiro Drops DS - Touch de Hajimaru Hatsukoi Monogatari | 2008 | nds |
| Nanatsuiro Drops Pure!! | 2007 | ps2 |