New Super Mario Bros. U

New Super Mario Bros. U is a side-scrolling 2.5D platform game and the fourth and final installment in the New Super Mario Bros. series. A successor to New Super Mario Bros. Wii, the game uses new, more detailed background styles and models, and introduces the Flying Squirrel power-up that Mario and his friends get with an item called the Super Acorn, as well as the use of the Wii U GamePad in Boost mode. In addition to the main campaign, there is also a challenge mode.