Use left ad right arrow keys or tap o the scree to rotate the rig.

Circle Rotate is a puzzle game where you need to rotate the ring which has a small opening on one side. White balls should pass through that opening and reach the center of the ring. The opening is narrow and you have to adjust it well to go through it with the white ball. You have the opportunity for a few mistakes, but be careful and try to pass more balls through the opening.