Super Mario Bros. Wonder is a side-scrolling platform game and the first 2D Super Mario entry since New Super Mario Bros. U (2012). Players choose from twelve characters and traverse levels across the Flower Kingdom, a new setting for the series. The game's central mechanic is the Wonder Flower, which dramatically alters levels in unpredictable ways when touched. New power-ups include an elephant transformation, a bubble flower, and a drill hat, while an equippable badge system allows players to customize their abilities. The game supports local multiplayer for up to four active players and includes an asynchronous online mode.

Super Mario Bros. Wonder is a side-scrolling platform game and the first 2D Super Mario entry since New Super Mario Bros. U (2012). Players choose from twelve characters and traverse levels across the Flower Kingdom, a new setting for the series. The game's central mechanic is the Wonder Flower, which dramatically alters levels in unpredictable ways when touched. New power-ups include an elephant transformation, a bubble flower, and a drill hat, while an equippable badge system allows players to customize their abilities. The game supports local multiplayer for up to four active players and includes an asynchronous online mode.