Mario & Sonic at the Olympic Winter Games, is a sports game developed by Sega. It was published by Nintendo for Japan and by Sega for North America and Europe. The game is officially licensed by the International Olympic Committee (IOC) through exclusive license International Sports Multimedia. The game is the third official crossover title to feature characters from both Mario and Sonic’s respective universes. It was released on the Wii and the Nintendo DS handheld in October 2009, and is the first official video game of the 2010 Winter Olympic Games.
Mario & Sonic on the Wii and DS is a collection of events based on the Olympic Winter Games. Players can assume the role of a Nintendo or Sega character while competing against the others in these events. The game features all of the playable characters that were present in its predecessor, as well as four new characters.