I could write a thousand words and I wouldn't be able to explain Potatoman Seeks the Troof as eloquently as the wise old tiller in the video below. He says things like, "Strange year already, what with the bears nestin' up under the crops, givin' them the 'tater shakes." What I will tell you is that it's the new game from the home of Dino Run, Pixeljam, and it's available for $3 or in a pack with Dino Run, and other games and soundtracks for $10. There's even a $5 pack with an album of music and a pixel game creation tool. The trailer alone is worth $20 though and yet, bizarrely, you can watch it below for free.
Trailer of the year.