Doppelscope is an abstract puzzle game which is all about the invisible relations things have to another. It won the Unity Awards 2009 in the category Best Visual Design.
Doppelscope is divided into small cubical worlds. The goal in each world is to restore a given misbalance by reconnecting and moving the things presented in the world. Of course the solution isn't always the obvious one and there is plenty of room for experimentation.