The flagship title is the fastest Wii game to reach 3 million in sales.
New Super Mario Bros. Wii has sold over three million copies in Japan in just seven weeks, making it the fastest selling Wii title yet released in the region.
Famtisu.com reported sales figures of 3,002,753 as of the week ending January 17, just seven weeks after the game was released on December 3.
The other Wii titles that have sold more than three million copies are Wii Sports and Wii Fit.
Thanks to NWR Forum member BlackNMild2k1 for the news tip!