Amazon's Description of SSB on Wii U is a Little Too Helpful

We've known for some time that the Wii U version of Super Smash Bros. would be different from the 3DS version, but Nintendo's been pretty quiet about what changes we'll see. Thankfully, Amazon's spilled at least some of the beans. Looks like we're getting a stage creator utilizing the GamePad, Master and Crazy Hand challenges, and a board game mode.