http://www.ign.com/articles/2012/06/05/e3-2011-new-super-mario-bros-u-the-glory-of-the-flying-squirrel

I'm not even sure why I love Flying Squirrel Mario so much. Part
of it is his transformation into a half-human, half-squirrel creation that gives
him expanded upward mobility. The other is just the simple notion that when I
jump, I can shake Wii U's GamePad and send Mario soaring into the sky. It's the
simple things that make New Super Mario Bros. U a joy, and lifting to the air
vertically and gently floating downward as a squirrel is about the simplest way
I know how to express my joy in playing Nintendo's latest 2D Mario game.