Sega Master System Roms

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Machine Gun Joe (J) [!] 24 kb
Maechiko's Omikuji (SG-1000) (PD) 2 kb
Maechiko's S_Sniper (SG-1000) (PD) 2 kb
Magali no Castelo do Dragao (Monica no Castelo Hack) 130 kb
Magic Drive Plus BIOS [!] 7 kb
Mahjong Sengoku Jidai (J) [!] 63 kb
Mahjong Sengoku Jidai (J) [b1] 123 kb
Mahjong Sengoku Jidai (J) [o1] 123 kb
Makai Retsuden (J) [!] 79 kb
Marble Madness (UE) [!] 93 kb
Marble Madness (UE) [b1] 93 kb
Master Mario Bros (Teddy Boy Hack) 22 kb
Master Mega Man (Brazil) [o1] 129 kb
Master Mega Man (WonderBoy in ML Hack) 129 kb
Master of Darkness (UE) [!] 163 kb
Master of Darkness (UE) [b1] 163 kb
Master Smash Brothers (v1.0) (Psycho Fox Hack) 95 kb
Master Zelda (Brazil) (Teddy Boy Hack) 22 kb
Master Zelda (Brazil) (Teddy Boy Hack) [a1] 22 kb
Masters of Combat (UE) [!] 170 kb
Maze Hunter 3D (U) [!] 78 kb
Maze Walker (J) [!] 78 kb
Megumi Rescue (J) [!] 67 kb
Mercs (UE) [!] 218 kb
Michael Jackson's Moonwalker (UE) [!] 133 kb
Michael Jackson's Moonwalker (UE) [b1] 133 kb
Mick & Mack As The Global Gladiators (UE) 301 kb
Mick & Mack As The Global Gladiators (UE) [a1] 301 kb
Mickey Mouse - Castle of Illusion (J) [!] 142 kb
Mickey Mouse - Castle of Illusion (J) [h1] 142 kb
Mickey Mouse - Castle of Illusion (UE) [!] 140 kb
Mickey Mouse - Land of Illusion (UE) [!] 303 kb
Mickey Mouse - Legend of Illusion (UE) [!] 261 kb
Micro Machines (E) [!] 152 kb
Micro Machines (E) [b1] 38 kb
Miracle Warriors - Seal of the Dark Lord (UE) [!] 161 kb
Miracle Warriors - Seal of the Dark Lord (UE) [b1] 161 kb
Missile Defense 3D (UE) [!] 78 kb
Monaco GP (SG-1000) 19 kb
Monica 3 (WonderBoy in MW Hack) 181 kb
Monica no Castelo do Dragao (Brazil) [!] 131 kb
Monopoly (U) [!] 65 kb
Monopoly (U) [a1][!] 65 kb
Montezuma's Revenge (UE) [!] 50 kb
Mortal Kombat (UE) [!] 374 kb
Mortal Kombat 2 (UE) [!] 386 kb
Mortal Kombat 2 (UE) [b1] 386 kb
Mortal Kombat 3 (UE) [!] 266 kb
Ms. Pac-man (UE) [!] 54 kb
Music Station V1.6 (SG-1000) [!] 226 kb
My Hero (UE) [!] 24 kb
My Hero (UE) [o1] 173 kb
My Hero (UE) [o2] 45 kb
My Hero (UE) [o3] 88 kb