| Mario & Luigi: Brothership | 2024 | switch |
| Mario + Rabbids Kingdom Battle | 2017 | switch |
| Mario + Rabbids Sparks of Hope | 2022 | switch |
| Mario Story | 2007 | wii |
| Marl Oukoku no Ningyou-hime - The Adventure of Puppet Princess | 1998 | ps1 |
| Mars - War Logs | 2013 | ps3, xbox360 |
| Marvel - Ultimate Alliance | 2006 | gba, ps2, ps3, ps4, psp, wii, xbox, xbox360, xboxone |
| Marvel - Ultimate Alliance 2 | 2009 | nds, ps2, ps3, psp, wii, xbox360 |
| Marvel Heroes Omega | 2017 | ps4 |
| Marvel: Ultimate Alliance 2 | 2016 | ps4, xboxone |
| Marvelous - Mouhitotsu no Takara-jima | 1996 | snes |
| Mary Skelter - Nightmares | 2016 | vita |
| Mary Skelter 2 | 2018 | ps4, switch |
| Mary Skelter Finale | 2020 | ps4, switch |
| MasMon Kids - The Another World of the Master of Monsters | 1998 | ps1 |
| Masakari Densetsu - Kintarou RPG Hen | 1994 | gb |
| Mashin Eiyuuden Wataru Gaiden | 1990 | nes |
| Mashou | 1986 | nes |
| Mashou Denki - La Valeur | 1991 | pcengine |
| Masquerada: Songs and Shadows | 2017 | ps4, xboxone |
| Mass Effect | 2007 | ps3, xbox360 |
| Mass Effect 2 | 2010 | ps3, xbox360 |
| Mass Effect 2 - Kasumi Stolen Memory | | xbox360 |
| Mass Effect 2 - Lair of the Shadow Broker | | xbox360 |
| Mass Effect 2 - Overlord | | xbox360 |
| Mass Effect 3 | 2012 | ps3, xbox360 |
| Mass Effect Legendary Edition | 2021 | ps4, xboxone |
| Mass Effect: Andromeda | 2017 | ps4, xboxone |
| Master of the Monster Lair | 2007 | nds |
| Matantei Loki Ragnarok - Gensou no Labyrinth | 2003 | gba |
| Mateki Densetsu Astralius | 1991 | pcengine |
| Maten Densetsu - Senritsu no Ooparts | 1995 | snes |
| Maten no Soumetsu | 1993 | genesis |
| Maze Heroes - Meikyuu Densetsu | 2002 | ps1 |
| Mazes of Fate | 2006 | gba |
| Mazes of Fate DS | 2008 | nds |
| Medabots - Metabee | 2002 | gba |
| Medarot - Kabuto Version | 1997 | gb |
| Medarot - Kuwagata Version | 1997 | gb |
| Medarot - Parts Collection | 1998 | gb |
| Medarot - Parts Collection 2 | 1998 | gb |
| Medarot 2 - Kabuto Version | 1999 | gbc |
| Medarot 2 - Kuwagata Version | 1999 | gbc |
| Medarot 2 - Parts Collection | 1999 | gbc |
| Medarot 3 - Kabuto Version | 2000 | gbc |
| Medarot 3 - Kuwagata Version | 2000 | gbc |
| Medarot 3 - Parts Collection - Z kara no Chousenjou | 2000 | gbc |
| Medarot 4 - Kabuto Version | 2001 | gbc |
| Medarot 4 - Kuwagata Version | 2001 | gbc |
| Medarot 5 - Susutake Mura no Tenkousei - Kabuto | 2001 | gbc |
| Medarot 5 - Susutake Mura no Tenkousei - Kuwagata | 2001 | gbc |
| Medarot 7 - Kabuto Ver | 2012 | 3ds |
| Medarot 7 - Kuwagata Ver | 2012 | 3ds |
| Medarot 8 - Kabuto Ver | 2014 | 3ds |
| Medarot 8 - Kuwagata Ver | 2014 | 3ds |
| Medarot 9 - Kabuto Ver | 2015 | 3ds |
| Medarot 9 - Kuwagata Ver | 2015 | 3ds |
| Medarot Classics - Kabuto Version | 2017 | 3ds |
| Medarot DS - Kabuto Ver | 2010 | nds |
| Medarot DS - Kuwagata Ver | 2010 | nds |
| Medarot Dual - Kabuto Ver | 2013 | 3ds |
| Medarot Dual - Kuwagata Ver | 2013 | 3ds |
| Medarot Girls Mission - Kabuto Ver | 2016 | 3ds |
| Medarot Girls Mission - Kuwagata Ver | 2016 | 3ds |
| Medarot Navi - Kabuto | 2001 | gba |
| Medarot Navi - Kuwagata | 2001 | gba |
| Medarot Ni Core - Kabuto | 2002 | gba |
| Medarot Ni Core - Kuwagata | 2002 | gba |
| Medarot Perfect Edition - Kabuto Version | 1999 | ws |
| Medarot Perfect Edition - Kuwagata Version | 1999 | ws |
| Medarot R | 1999 | ps1 |
| Mega Man - Battle Network 3 - Blue Version | 2003 | gba |
| Mega Man 64 | 2001 | n64 |
| Mega Man Battle Chip Challenge | 2014 | wiiu |
| Mega Man Battle Network | 2014 | wiiu |
| Mega Man Battle Network 2 | 2015 | wiiu |
| Mega Man Battle Network 3 - Blue | 2015 | wiiu |
| Mega Man Battle Network 3 - White | 2015 | wiiu |
| Mega Man Battle Network 4 - Blue Moon | 2015 | wiiu |
| Mega Man Battle Network 4 - Red Sun | 2015 | wiiu |
| Mega Man Battle Network 5 - Team Protoman | 2015 | wiiu |
| Mega Man Battle Network 6 - Cybeast Falzar | 2016 | wiiu |
| Mega Man Battle Network 6 - Cybeast Gregar | 2016 | wiiu |
| Mega Man Battle Network Legacy Collection | 2023 | switch |
| Mega Man Battle Network Legacy Collection Vol. 1 | 2023 | ps4 |
| Mega Man Battle Network Legacy Collection Vol. 2 | 2023 | ps4 |
| Mega Man Star Force - Dragon | 2006 | nds |
| Mega Man Star Force - Leo | 2006 | nds |
| Mega Man Star Force - Pegasus | 2006 | nds |
| Mega Man Star Force 2 - Zerker x Ninja | 2007 | nds |
| Mega Man Star Force 3 - Black Ace | 2008 | nds |
| Mega Man Star Force 3 - Red Joker | 2008 | nds |
| Mega Man Star Force Legacy Collection | 2026 | ps4, switch, xboxone |
| Mega Man X - Command Mission | 2004 | gc, ps2 |
| Megadimension Neptunia VII | 2015 | ps4, switch |
| Megaman - Battle Network 2 | 2002 | gba |
| Megaman - Battle Network 3 - White Version | 2002 | gba |
| Megaman - Battle Network 4 - Red Sun | 2004 | gba |
| Megaman - Battle Network 5 - Team Colonel | 2005 | gba |
| Megaman - Battle Network 6 - Cybeast Falzar | 2005 | gba |