PURPOSE: To permit the return of a ball from the front surface side of each machine without wiring-connecting an instruction chamber and a pachinko game machine by revolving the driving motor of an electrical prize ball delivery device by the turning-ON operation of a switch which can be turning-ON- operated from the front surface side and leading the prize ball to a ball returning passage by operating a passage selecting device.

CONSTITUTION: An electrical prize ball delivery device 13 which delivers prize balls by the revolution of a driving motor 16 and a passage selecting device 30 for introducing the delivered Prize balls to a struck ball feeding plate on the front surface of a pachinko game machine 1 are installed. On the reverse surface side of the pachinko game machine 1, a ball returning switch 37 is installed so as to be turning-ON-operated from the front surface side, and the driving motor 16 of the electrical prize ball delivery device 13 is revolved by the turning-ON operation of the switch 37, and a passage selecting device 30 is operated, and the prize ball delivered from the electrical prize ball delivery device 13 is introduced into a ball returning passage 29. Accordingly, the ball can be returned electrically by the operation from the front surface side of the pachinko game machine.