The Pig Rider is fresh air into the old garden. Imagined as a 2D platform game, but with completely new mechanic to the genre. >Interacting< with the pig you can achieve new forms - as merging with it (shown in the video) will grant you size and strenght but also make you slower for a period of time. 

For now, what you can see is concept for first level which plays in a cave, second one (when I get more time :D) will be featuring Sky terrain where you'll be able to use mechanic of pig mounting and flying with it. Neat huh.