There's only so much we can say about Super Mario 3D World due to review embargoes and such. But Nintendo isn't obligated to keep their mouths shut. In fact, they can flat-out spoil many of the surprises in store for players. A new trailer shows off 10 things you probably didn't know about the game, but will make you say "wow." But be warned: perhaps you'll want to discover these things in the game yourself?