New Super Mario Bros. Articles for DSOn: DS
Nintendo also releasing Kirby collection on Wii, and updating Mario Kart 7 in May.
Over half a million units of Nintendo's sporty sequel sold to US gamers.
The platform holder's far exceeds that of the industry as a whole.
The PSP's best-selling title in North America wouldn't make the Top 5 list for Nintendo DS.
Over 6 million units sold as of November 30 according to internal figures.