M4supst__ba ROM Download can be obtained free for MAME on EmuGames.net only. Play emulator game in English for the USA region. M4supst__ba is a MAME ROM that you can download to your computer or play online within your browser. You can also download roms such as Qix and Monty Is Innocent that work on all devices including desktop and mobile. Be sure to rate the game if you enjoyed playing this ROM.