I know that a bunch of us here have played Trine 2, and if you haven't, you should, it's a great game. It's also a very beautiful game, and still one of the best looking games on the Wii U.
You can find the contest details right here. There will be multiple rounds, and each round will have 3 winners selected. The winners will receive a prize pack including a Trine 2 t-shirt, an art book, and a Splot plush toy.
I know that we have a bunch of artists here, and a few in particular who have made some really neat Miiverse drawings. Why not give it a shot?