Super Mario Maker was a Wii U game release in 2015 for the Nintendo Wii U.
The demo of the E3
The e3 demo had several different things. As Mario with the weird mushroom looked different being a simple little stretched Mario and some soundtracks sounded different from the final game. and in matter of the graphics the game had a more remarkable shading of the objects which was changed to look more like a game of the NES.
So far the only thing they have are some videos tested this demo.