Donkey Kong Country: Tropical Freeze sold "more than 130,000 combined physical and digital units" during its first eight days of release, according to Nintendo and U.S. sales data from consumer research group NPD. Tropical Freeze launched on February 21.

Nintendo 3DS software sales increased 25 percent over the same reported period last year with the launch of Bravely Default and continued success of the Pokemon X and Y series. Life-to-date, Pokemon X and Y have sold "more than 3.4 million" in the United States alone. Wii U software sales skyrocketed 180 percent over the same month last year.

Highlights going forward, Nintendo notes, are the upcoming launches of Kirby: Triple Deluxe, Mario Kart 8 and Yoshi's New Island, which Joystiq recently reviewed.