According to a report from Japanese publication Nikkei Net, Nintendo's New Super Mario Bros. Wii has now sold 10 million copies worldwide. The game needed only 45 days to pass the already impressive sales numbers of Super Mario Galaxy. Quoting Gamasutra: "NSMB Wii has sold 3 million units in Japan, where it launched on December 3; 3 million copies in Europe, where it launched November 20, and 4.5 million units in North America, where it launched November 15. Super Mario Galaxy has sold 4.1 million units in North America since 2007. The game's design hearkens back to the two-dimensional, side-scrolling style of earlier Mario titles ... The numbers would seem to suggest that these traits successfully generated more mass appeal for NSMB Wii than for the three-dimensional and far less familiar Super Mario Galaxy, which sent the plumber navigating more innovative spherical space environments."