PURPOSE: To provide a ball shooting game machine capable of precisely detecting the unfair practice related to the generation of a special game state.

CONSTITUTION: This ball shooting game machine has a first unfairness detecting means for detecting an unfairness on the basis of the comparing operation of the display result of identification information by a variable display device 40 with the detected state of a special ball by a special ball detector, and a second unfairness detecting means for detecting the unfairness on the basis of the comparing operation of the opening and closing state of a special variable prize hole 31a in a variable prize ball device 31 with the detected state of a prize ball by a prize ball detector 35. Thus, when a special game state is generated regardless of that the identification information does not become a big hit combination in the variable display device 40, or when the detecting operation of the prize ball by the prize ball detector 35 does not correspond to the opening and closing state of the special variable prize hole 31a, this can be detected as the unfairness.