The series features both brothers responding to a specific input, Mario being controlled with "A" and Luigi "B". Like and , the series features a turn-based battle system. Enemies are encountered on the overworld, and the player can interact the enemy and enter into a battle scene. In battle, Mario and Luigi can attack either by using one of their basic attacks (jumping or with a hammer) or by using a special ( in the third game). In and , the Bros. attack consumes Bros. Points (BP) (in they are , and in the Bros. Attacks. are instead ). The series battle system also comes with the ability to avoid attacks by jumping or counterattacking by using the hammer, depending on the attack. Enemies often signal which brother they are going to attack.
Mario and Luigi embark on the adventure of their dreams in a hilarious action RPG that combines the resort world of Pi'illo Island with the wild landscapes of Luigi's imagination, where anything can happen. Meet a host of hilarious characters as you strive to rescue Princess Peach and help Prince Dreambert free his petrified Pi'illo people from the bat-king Antasma's curse.
The series features many items. Items can be obtained if the characters hit blocks, win battles, win minigames, and others. Mario and Luigi can buy items at various shops with coins they earned in battles and blocks. Clothes and badges are earned usually as a prize while key items are needed to advance the storyline or complete a sidequest.
During the era, Luigi didn't star in any platforms, although he was in many spin-offs. This was quickly changed with the 's launch when they forgot all about Mario and made Luigi the star of for the new console. In the game, Luigi wins a new mansion in a contest he didn't even enter. Once he arrives, he finds out that Mario has been taken by and put into a painting.