Disclosed is a crane game machine, which includes at least: a camera unit which images an inside of a main body in which prizes are accommodated, and generates an internal image; a prize moving unit which picks up a prize and then moves the prize to a first score point inside the main body; a sensor unit which is installed at the first score point and senses the passing of the prize through the first score point; a communication unit which transmits the internal image and the sensing result to an external device, and receives a prize moving unit control signal from the external device; and a control unit which controls the movement of the prize moving unit according to the prize moving unit control signal.