To finely change a probability of producing a big win.
This game machine is provided with variable display means (for example, a sub CPU 41 and a special symbol display device 4) repeatedly executing a variable display and a stationary display of a plurality of types of identification information; a win/failure determination means (for example a main CPU 31) determining whether or not producing the big win on condition that a game ball passes a start area; and a specific game state control means (for example, the main CPU 31), on condition that the win/failure determination means determines the big win and the predetermined stationary form is derived on a variable display means, changing the game state into a specific game state advantageous for the player. The win/failure determination means is provided with a win/failure determination settling means settling whether or not producing the big win at a first probability on condition that the game ball passes the start area; and a win/failure determination alteration means determining whether or not altering the big win at a second probability on condition that the big win is determined by the win/failure determination settling means.
Iwa Saki Kokuni
Akira Kurihara
Kawamata Sumio
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu
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