Rayman Legends represents exactly what Wii U games should strive to be. And on any platform, it's what a platformer should be. In addition, the game offers precisely what an online-connected, social single-player experience should. But above all, Rayman Legends embodies the spirit of what makes gaming so wonderful: it's enchanting, it's memorable, and most importantly, it's sheer fun. 
I didn't even mention Kung-Foot, a hilariously fun multiplayer soccer game
This review is based on early retail Wii U code provided by the publisher. Rayman Legends will be available at retail on Wii U, PS Vita, PS3 and Xbox 360. It will also be available digitally on PC on September 3rd for $59.99. The game is rated E10.