Mario Bros. is the second arcade game starring Mario as a protagonist, coming after Donkey Kong. The game's main attraction was featuring cooperative two-player functionality with Mario's recently introduced brother, Luigi. The two are in a sewer, battling various enemies leaking from the plumbing, bashing the floors underneath them to stun them before kicking them away. Many aspects from this game recur in later Mario franchise games, notably coins, pipes, POW Blocks, and enemy turtles. The game has been ported innumerable times to various systems.
Mario Bros. Special is a Japan-only computer game developed by Hudson Soft. It has altered gameplay with stages where Mario or Luigi must complete specific tasks, such as pressing switches or collecting $ symbols.
Kaettekita Mario Bros. is a Japan-only game for the Family Computer Disk System, being mostly a more graphically accurate port of the original arcade game than the 1983 Family Computer and Nintendo Entertainment System port. However, it also has new features, such as the ability to change direction mid-jump and a slot machine minigame. Many of its graphical enhancements were used in a 1993 European NES port of Mario Bros.
Mario Clash, unlike its predecessors, stars only Mario, but it otherwise keeps the same gameplay formula. It takes place in the Clash House Tower, where Mario needs to defeat invading enemies in both the standard playing field and in the background by using the Virtual Boy's depth and Koopa shells.
The Game & Watch game Mario Bros. was released before the arcade game (and as such is technically the first appearance of Luigi), though it also started development later. Gameplay-wise, the games have nothing in common, with the Game & Watch game featuring Mario and Luigi working in a bottling plant, with one of the brothers appearing on each of its two screens. It was ported to both Game & Watch Gallery 3 and Game & Watch Gallery 4.
Super Mario Bros. 3 features a battle mode called "Classic Mario Bros.," which is an altered version of the original. It is the first rendition to replace Shellcreepers with Spinies. A further edited version appears in the Super Mario All-Stars version of Super Mario Bros. 3.
Super Mario Advance also features an alternate mode based on Mario Bros., having both a normal mode and a battle mode. Additionally, it can have up to four players and features some other new elements, such as trash cans and Bowser. This mode returns in every other Super Mario Advance game as well as Mario & Luigi: Superstar Saga.