Nintendo's Wii U sales have been flat lining almost since the console was launched. It seems like the latest Mario Kart, the eighth in the series, is helping bolster the Wii U's numbers. Mario Kart 8 has sold 1.2 million copies worldwide from its launch period of Thursday, May 29 to Sunday, June 1.
It's not surprising that Mario Kart 8 has managed to sell so well. According to Nintendo, the Mario Kart series, prior to 8, have already sold over 100 million copies. Mario Kart DS and Mario Kart Wii were pulling most of the weight, selling 23.56 million and 35.53 million units each, respectively.
Nintendo has yet to release new Wii U sales figures, but it's likely that in the coming weeks Nintendo will show something, especially with how quickly Mario Kart 8 is moving units. Hopefully, the new Super Smash Bros, which will be releasing sometime this year, will have a similar effect on Nintendo's dud console.