I bought Super Smash Brothers for the Wii U, and I already registered it with Nintendo. If you register both Super Smash for 3ds and Wii U, on the same account. You get a bunch of freebies for the next upcoming year like Mewtwo in the spring on 2015 for free. So if anyone bought the 3 DS game and they look on the inside cover of the case there will be a registration number PM it to me, and in the spring when I get the code I'll send it to you so we both get free stuff.
don't forget to join the Super Smash Brothers cult: tournament for both the wii and wii U, will be soon I've yet to decide what the winners will get, but it will be something cool.
https://www.newschoolers.com/cultforum/5076/SMBB