If you were on the fence about picking up Sideway New York when it launched, get your ass over to Steam because it's on MEGA SALE! You can get it now for a whopping 70% off!!
Sideway New York is a platform game with a pretty unique hook. All the action in the Sideway happens in the graffiti world. What this means, game play wise, is that you actually control your character as in a traditional 2D platform game but as he runs along the surfaces of 3D objects. Check out the trailer on the Steam page for an idea of how this actually works in practice. Though the game is mostly about action and platforming, this 2D on 3D aspect does open the door for some neat little puzzling interludes.