Well I don't have a Wii U yet, so this will suffice.
Super Mario Kart 8 is a demake of Mario Kart 8. Now, for the first time ever, you can experience a new Mario Kart Game as it would be in the days of the SNES! Featuring many different stages not seen before and original variations on them not found in Mario Kart 8 OR Super Mario Kart and a Battle Mode with 4 all courses to duke it out on!
Going to bung it on my Super Everdrive and see if it works tonight