To provide a game machine able to improve amusement.

A Pachinko machine 100, which includes: a left upper door 246a and a left lower door 246c for a predetermined performance; a driving means for operating the left upper door 246a and left lower door 246c; and a drive control means for controlling the driving means, is provided with one optical sensor 720 and light shield plates 730a and 730c for the left upper door 246a and left lower door 246c respectively. The drive control means exerts control based on the detection of the light shield plates 730a and 730c by the one optical sensor 720 such that the left upper door 246a and left lower door 246c are located in predetermined positions.