Running in a gravity changed area is nothing easy. You can try it in this 3D mobile game which tests you reflexes.
Never ending tunnel filled by obstacles deep in cellars or on high platforms in a futuristic city. You are a running robot who tries to get out the tunnels without losing health and trying to reacit in time. Using the display gestures you jump, crawl or changing the gravity. Every location has five levels which get unlocked step by step. If you die you begin fro beginning so be careful.