The NPD Group released their numbers for May, with Mario Kart 8 and Kirby: Triple Deluxe charting.

For the two days it was out in May, Mario Kart 8 managed to take the #2 spot. Kirby: Triple Deluxe, which was released at the beginning of May, came in at #9. The number one game of the month was Watch Dogs, which is still slated for a release on the Wii U. The Amazing Spider Man 2 and Call of Duty: Ghosts, which have incarnations on Nintendo systems, also ranked this month at #6 and #10, respectively.

Compared to 2013, retail sales were up 52%, hardware sales were up 95%, and software sales were up 57% percent.