To provide a pinball game machine capable of covering a proximity sensor in a wider range by a minimum radio-wave sensor.

A pinball game machine includes: a proximity sensor 34, etc. capable of detecting game balls passing through a prescribed site within a playfield 5a on a game board 5; and a radio-wave sensor 72 capable of detecting radio waves causing malfunction of the proximity sensor 34, etc. The proximity sensor, etc. and the radio-wave sensor are disposed on the game board 5 or on game components mounted on the game board 5. The radio-wave sensor 72 is disposed in such a state that a radio-wave detection surface thereof is inclined related to the board surface of the game board 5.