Super Mario Bros. Wonder[b] is a 2023 platform game developed and published by Nintendo for the Nintendo Switch. It is the first traditional side-scrolling Super Mario game since New Super Mario Bros. U (2012). The player controls Mario, Luigi, and their friends as they attempt to stop Bowser, who plots to take over a new land known as the Flower Kingdom after using the magical Wonder Flower to fuse himself with the kingdom's castle.
Development for Super Mario Bros. Wonder began in 2019, with director Shiro Mouri taking inspiration from the original Super Mario Bros. and producer Takashi Tezuka seeking to reinvent the 2D Mario experience and introduce a new location.
The game sold 4.3 million units in its first two weeks, making it the fastest-selling Super Mario game. It received critical acclaim and was nominated for several awards, including the Golden Joystick Award for Game of the Year and The Game Award for Game of the Year.