Mario Kart 7 (マリオカート7) is the seventh installment of the Mario Kart series and the third for the Nintendo 3DS platform. The game was released in Japan in December 2011, and worldwide in December 2011. Mario Kart 7 allows players to race and battle against each other in various courses from the Mario Kart universe. Players can choose from a variety of characters from the Mario universe, including Mario, Luigi, Peach, Yoshi, Wario, and more. The game features a variety of new features, including hang gliders and underwater racing. Players can also create their own custom tracks and race against other players online. Mario Kart 7 also features a new mode called 'Coin Rush,' in which players must collect as many coins as possible in a set amount of time. Mario Kart 7 is a fun and exciting racing game that is sure to provide hours of entertainment for players of all ages.