| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine capable of minutely and easily setting and changing the advantageous degree of every game machine. SOLUTION: This game machine is provided with variable prize winning ports 60, 65 which are prize winning ports other than a starting port and having condition devices 61, 66 such as movable pieces for changing the state of the prize winning ports into a closed state less apt for the ball to win a prize and an open state easy for the ball to win the prize. The condition devices 61, 66 are opened when the ball makes a winning entry into the starting port. The length of an open period and opening/closing frequency when opening the condition devices are set and changed through a setting switch 230.
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