Mario Bros. (1983)(Nintendo) ROM Download can be obtained free for Atari 800 on EmuGames.net only. Play Mario emulator game in English for the USA region. Mario Bros. is a Atari 800 ROM that you can download to your computer or play online within your browser. You can also download roms such as Mario Kart 64 and Super Mario Bros that work on all devices including desktop and mobile. Be sure to rate the game if you enjoyed playing this ROM.