Invisible Mario Bros (SMB1 Hack) ROM Download can be obtained free for Nintendo on EmuGames.net only. Play Mario emulator game in English for the USA region. Invisible Mario Bros is a NES ROM that you can download to your computer or play online within your browser. You can also download roms such as Arthur And The Invisibles The Game and New Super Mario Bros. that work on all devices including desktop and mobile. Be sure to rate the game if you enjoyed playing this ROM.