Play 20 em 1 online in your browser and enjoy with Emulator Games Online! 20 em 1 is SMS game USA region version that you can play free on our site. This game has arcade genres for Sega Master System console and is one of a series of arcade games. If you love arcade games you can also find other games on our site with Retro Games. Below you will find control for the emulator to play 20 em 1.