New Super Mario Bros. Wii is a 2.5D side-scrolling platformer; although it plays out in 2D, most of the in-game characters and objects are 3D polygonal renderings on 2D backgrounds. In single-player mode, the player controls Mario and must complete various levels, which are filled with both helpful items and harmful obstacles. The player must maneuver him to a large flag pole at the end of each stage to progress. The game can be played with the Wii Remote held horizontally, or vertically with the Wii Nunchuk attached. Mario can run, jump, and perform additional moves returning from New Super Mario Bros. such as wall kicks, ground pounds and double and triple jumps. New Super Mario Bros. Wii frequently makes use of the Wii Remote's motion control features; the player can shake the controller in order to perform various different actions, such as a short spin jump which kills enemies, a mid-air twirl that can be used to sustain air time, and the ability to pick up, carry and throw certain objects. Certain areas within levels, such as specific platforms, can be manipulated by standing over them and tilting the Wii Remote. Certain levels are set underwater, where the player must swim to traverse the level.