Mario Bros. is an online 2600 game that you can play at Emulator Online. This free Atari 2600 game is the United States of America region version for the USA. Mario Bros. is a single title from the many platform games, arcade games and mario games offered for this console. If you enjoyed playing this, then you can find similar games in the 2600 games category. Mario Bros. game is from the various retro games on the site, and there are more games like this, including Super Mario 64, Super Smash Bros. and Mario Kart 64.