To provide a pinball game machine which suppresses a deterioration in putout ball increase speed and does not give a player an impression that a privilege game state is finished so quickly.

On the basis of completion of a special game state, until the number of variations of a symbol reaches a prescribed upper limit number of times, a game state is shifted to a privileged game state (probability variation state) which is easier to shift to the special game state than to a normal game state (S452, S459, S370, S374). A variation pattern is defined so that a variation time of the symbol in a first half section (probability variation A state) of a period when the game state is being shifted to the privilege game state is relatively shorter than the variation time of the symbol in a second half section (probability variation B state) of the privilege game state.