"New Super Mario Bros. U Deluxe" is a platform video game developed by Nintendo for the Nintendo Switch. It is an enhanced version of the original game released for the Wii U in 2012. Players control Mario, Luigi, and other characters as they navigate through various levels filled with enemies, power-ups, and hidden secrets. The game features both single-player and multiplayer modes, allowing up to four players to join in the fun. Players can choose from characters like Toadette and Nabbit, each with unique abilities. The game includes new features, such as the ability to rewind time and a variety of challenges to complete.