Duh, I didn't know you got a free game when you register your copy of the game.
That should have been promoted more. I may not be in tuned to everything Nintendo like some but if I didn't know I am sure many casuals won't either. That should be on the packaging (unless it was a very late decision).
That is a strong incentive to grab a Wii U if you were thinking about getting MK8 but wasn't quite sure.
Zelda:WWHD is a great freebie. Was thinking of buying it.