What is your favorite 3rd party Wii U game? Based on Gameplay, Technical/implementation details (if any) , the effect it has had on you or your friends and any lessons for devs and/or Nintendo if any.

[bonzobanana]

Sonic Racing Transformed: While its got a lower resolution than ps3 and 360 it maintains its frame rate better than ps3 and is just a brilliant game with so much to see and do. It's my favourite multiformat game on wii u and I think it was the first win for wii u on the eurogamer faceoffs.