Mario Kart 7 Mario Kāto Sebun) is a 2011 racing video game in the Mario Kart series, developed by Nintendo EAD and Retro Studios and published by Nintendo for the Nintendo 3DS. Similar to previous games in the series, players participate in go-kart racing on various Mario-themed tracks, playing as one of seventeen different Mario characters. While racing, the players make use of power-up Mario series, but two tracks are set on Wuhu Island, which was featured in non-Mario video games Wii Fit, Wii Fit Plus and Wii Sports Resort. While driving, the players use power-up items, obtained from running into item boxes located at specific points on the track, that are used to hinder the progression of opponents or to help the player in the race. Some of these power-ups include the series staple items Koopa Shells, Banana Peels, and Super Mushrooms. Mario Kart 7 also features three items new to the Mario Kart series: the Fire Flower, the Super Leaf, and the Lucky Seven, which bestows seven items at once. Coins, originally introduced in Super Mario Kart, are scattered about the tracks; collecting them increases the kart's top speed. Up to ten coins can be collected in each race, but some will be lost if the player comes into contact with hazards or goes out of bounds. Jump actions, which were introduced in Mario Kart Wii as tricks, lets players obtain a brief burst of speed when driving off ramps. In addition to traditional controls, Mario Kart 7 can be played using the Nintendo 3DS gyroscope, in which the action is viewed in first person and the player steers the kart simply by turning the entire game system.