It seems that endless tunnels are the favorite places for extreme balls. In the game Tunnel Run you will get acquainted with the same reckless round character that the tunnel has climbed. Having started the movement, remember that various obstacles will appear ahead in the form of empty gaps between the plates of which the maze is built. The builders were unfair and in some places did not lay bricks. The ball must go around the void, otherwise the journey will end quickly. Control the arrow keys.