For the MAME roms to work in the Emulators first thing, the names of Winrar file and the files inside of Winrar should match. In every website where you should download the games, it tells you what emulator you need, maybe in the past, that was a problem finding the right emulators to play the right game of *link removed* . For now, I'm playing Metal Slug X on Tiger Arcade Emulator for Android Devices.