http://www.destructoid.com/ori-and-the-blind-forest-is-a-beautiful-metroidvania-276352.phtml saweeet! and unity just tweeted about it. the engine is Unity3d :)
thank you very much guys, the amount of love it gets is INSANE total madness, we are all super happy fenyce it will be relased on the one and pc at the same time. Its unity3d, there isn't much porting