To enjoy the motion of a ball in the process of entering a prize winning hole.

A pachinko system 19 has a ball entrance chamber 25 for making the ball enter a easing 24 and a driving chamber 27 for housing a solenoid 26 as a driving means. A ball entrance hole 28 for making the ball enter is provided on the upper surface of the ball entrance chamber 25. Besides, a first electrode 39 formed into plane is provided on the base of the ball entrance chamber 25, and a second electrode 42 formed into vertical plane is provided on a partition wall 40 separating the ball entrance chamber 25 and the driving chamber 27. The first electrode 39 and the second electrode 42 are conducted through the ball in the ball entrance chamber 25 and a signal is outputted to the solenoid 26. As a result, the ball in the ball entrance chamber 25 is pressed by a plunger 26a of the solenoid 26 and flicked out of a shooting port 43 to the prize winning hole of a center role.