Mario & Sonic at the Olympic Winter Games

Mario & Sonic at the Olympic Winter Games is a 2009 sports video game developed by Sega. 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, the first and second being the game's predecessor Mario & Sonic at the Olympic Games and Super Smash Bros. Brawl respectively. It was the first official video game of the 2010 Winter Olympic Games.

Mario & Sonic at the Olympic Winter Games is a collection of events based on the Olympic Winter Games. Players can assume the role of a Mario or Sonic 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.