| MarZ: Tactical Base Defense (2019) | 1,379,680 | 784 |
| MASAGORO (2021) | 12,435,168 | 992 |
| MASH VP! Re:VISION (2024) | 149,108 | 358 |
| Masha and the Bear: catch-up (2010) | 1,740,112 | 38 |
| Masha and the Bear: Preparing for school (2010) | 16,432 | 8 |
| Mashed: Drive to Survive (2004) | 487,766 | 246 |
| Mashinky (2017) | 5,383,597 | 3,004 |
| Mashiro Witch: Midnight Marchen (2017) | 37,742 | 24 |
| MASK (1987) | 16,237 | 22 |
| The Mask (1995) | 28,513,066 | 2,183 |
| MASK III: VENOM Strikes Back (1988) | 23,182 | 26 |
| Mask of the Plague Doctor (2020) | 2,740 | 30 |
| Mask of the Rose (2023) | 1,190,132 | 185 |
| The Mask of the Sun (1982) | 75,231 | 83 |
| Mask Quest (2024) | 26,731 | 31 |
| MASK Two Two (1987) | 8,176 | 10 |
| Masked Forces (2016) | 380,687 | 136 |
| Masked Forces 2: Mystic Demons (2017) | 104,779 | 19 |
| The Masked Rider: Kamen Rider ZO (1994) | 113,475 | 48 |
| Masked Shooters 2 (2016) | 83,197 | 37 |
| Maskmaker (2021) | 2,669,526 | 398 |
| Maskonauts: Chat'Attack (2022) | 17 | 1 |
| Masks Of Deception (2022) | 2,232,031 | 65 |
| Maso Marble (2017) | 0 | 0 |
| Masochistic Elves from Another World (2021) | 8,573 | 4 |
| Mason and Strings (2021) | 0 | 0 |
| Mason: Building Bricks (2020) | 3,133 | 10 |
| Masou no Viator (2019) | 94,423 | 129 |
| Masquerada: Songs and Shadows (2016) | 635,671 | 839 |
| Masquerade Mysteries: The Case of the Copycat Curator (2010) | 4,079 | 4 |
| Masquerade: The Baubles of Doom (2016) | 266,115 | 196 |
| Mass Destruction (1997) | 8,552,513 | 1,115 |
| Mass Effect (2007) | 544,621,823 | 248,548 |
| Mass Effect 2 (2010) | 562,061,451 | 209,566 |
| Mass Effect 3 (2012) | 1,069,526,463 | 212,137 |
| Mass Effect 3: From Ashes (2012) | 37 | 2 |
| Mass Effect 3: Omega (2012) | 1,228,801 | 119 |
| Mass Effect Galaxy (2009) | 156,781 | 57 |
| Mass Effect Infiltrator (2012) | 48,791,122 | 2,994 |
| Mass Effect: Andromeda (2017) | 506,241,537 | 179,416 |
| Mass Effect: Pinnacle Station (2009) | 171,773 | 34 |
| MASS FOR THE DEAD (2019) | 2,957,333 | 1,679 |
| MASS FOR THE DEAD OVERLORD (2019) | 1,571,331 | 1,374 |
| Mass Harvest (2022) | 130,996 | 10 |
| Massacre At The Mirage (2024) | 9,095,770 | 767 |
| Massira (2019) | 75,109 | 122 |
| Massive Air Combat (2019) | 22,711 | 26 |
| Massive Assault (2003) | 371,114 | 290 |
| Massive Assault Network 2 (2006) | 4,184 | 58 |
| Massive Chalice (2015) | 2,475,121 | 1,602 |
| Massive Defense (2024) | 68 | 3 |
| Massive Snowboarding (2005) | 11,188 | 14 |
| Mastema: Out of Hell (2017) | 3,180 | 18 |
| Master Arena (2022) | 25,870 | 98 |
| Master Blaster (2024) | 21,659,423 | 326 |
| Master Builder (2023) | 4,862,524 | 235 |
| Master Chess (1986) | 1,649,695 | 382 |
| Master Chu and the Drunkard Hu (1989) | 11,885,939 | 112 |
| Master Detective Archives: RAIN CODE (2023) | 16,490,308 | 11,280 |
| Master Detective Archives: RAIN CODE Plus (2024) | 124,694 | 564 |
| Master Key (2024) | 3,171,586 | 242 |
| Master Leaf Blower (2024) | 51,654 | 29 |
| Master Level Maker (2024) | 0 | 0 |
| Master Maker 3D Ultimate (2024) | 5,062 | 45 |
| Master Mind (1997) | 553,486 | 584 |
| Master Miner (1983) | 6,084 | 7 |
| Master of Chess (2024) | 6,955 | 122 |
| Master of Darkness (1992) | 1,010,375 | 1,044 |
| Master of Dimensions (1996) | 28,678 | 42 |
| Master Of Dodging (2020) | 2,832 | 15 |
| Master of Epic (2005) | 206,400 | 1,638 |
| Master of Illusion (2006) | 2,234,806 | 115 |
| Master of Illusion Express: Deep Psyche (2008) | 1,128 | 2 |
| Master of Illusion Express: Funny Face (2009) | 286 | 1 |
| Master of Illusion Express: Shuffle Games (2009) | 945 | 2 |
