Mario and Sonic at the London 2012 Olympic Games (Japan) マリオ&ソニック AT ロンドンオリンピック is a sports game developed by Sega Sports Japan and published by Nintendo for the Nintendo 3DS. The game is a crossover between the Mario and Sonic the Hedgehog franchises and features characters from both series competing in the 2012 Summer Olympic Games. Players can choose to play as one of the characters from either franchise and compete in a variety of events, including athletics, swimming, equestrian, badminton, and more. The game also features a variety of minigames and other activities, such as a shooting gallery and a quiz. The game features 3D visuals, allowing players to view their characters in 3D on the 3DS’s top screen. The game also features StreetPass functionality, allowing players to exchange items and compete against each other in a variety of events. Mario and Sonic at the London 2012 Olympic Games (Japan) is a fun and exciting game that allows players to experience the thrill of the Olympic Games.