Mario Bros.

Mario Bros. (JP) (also called MB) is an arcade video game by Nintendo. Released in 1983, Mario Bros. is the successor to the 1981 game Donkey Kong and predecessor to Super Mario Bros. The game is noteworthy for being the first multiplayer Mario game and is also the first appearance of Mario's brother younger, Luigi and a few enemies.

Despite debuting in the arcades, Mario Bros. has appeared on countless home platforms and handhelds, including Nintendo systems such as the Nintendo Entertainment System and the Virtual Boy, as well as an extra in games such as Super Mario Bros. 3 and all four Super Mario Advance games as well as Mario & Luigi: Superstar Saga.

Mario Bros. expanded upon the Mario franchise. It gave Mario a history and introduced new characters as well as a brand new occupation as being a plumber in New York. Various aspects of the game, including the location and his heritage as an Italian-American, would be altered in future games as Earth is taken out of the equation and the series is granted its own universe.