Mario Kart Wii also manages to sneak in another million
http://www.nintendoworldreport.com/news/36438
Five titles in the Wii U's library have surpassed the million-sales mark worldwide.
Following tonight's investor presentation, Nintendo released sales data for its top-selling Wii U titles. Super Mario 3D World came in first place, with over 1.94 million units sold. New Super Mario Bros. U came in second with 1.74 million, followed by New Super Luigi U with 1.51 million, Wii Party U with 1.24 million, and The Legend of Zelda: Wind Waker HD with 1.15 million.
Additionally, Mario Kart Wii managed to sell another million units in 2013, despite its release on the Wii nearly six years ago.
And this is why Nintendo is never going to listen when the internet proclaims that they need to stop making Mario games.
I'm most curious to see what will happen with Mario Kart 8. That will be a telling number. The Wii one is still a huge seller so will the buyers convert to the U for it? I'm not so sure. When people like my Wife use logic like "we already have a Mario Kart, why do you need another?" I get the feeling a lot of the casual base will use similar logic. Nintendo really needs to differentiate it from the last one for this reason. I think going to something like the dual racer mechanic in Double Dash would have differentiated it a bit more for the casual eye.