Mario & Sonic At The Olympic Winter Games is the sort of video game whose existence could be based purely on its innate marketing potential. When one considers the timing of its release coupled with its pure brand power as a package, its creation seems inevitable. It's the sequel to one of the biggest selling video games of the last few years. It's a family-oriented party game released just before the Christmas rush gathers momentum. It's tied to the largest sporting event of the first half of next year.