Namco Bandai Wii title Active Life: Outdoor Challenge (aka Family Trainer: Athletic World in Japan and Family Trainer in Europe) has sold over a million copies worldwide.
The game is bundled with a Power Pad style matt, which was also originally developed by Bandai for Famicom title Family Trainer. The updated pad and game first went on sale May 29, 2008 in Japan. It went on sale in North America and Europe this past September.
As of December 2008, the Wii game has sold over a million globally. Here's the breakdown:
Japan: 140,000 copies
North America: 540,000 copies
Europe: 320,000 copies