To enhance a player's interest in a game by executing continuous presentation without interruption by ready-to-win presentation on the way.

When an advance determining command assigning the result of comparison between a ready-to-win determining random number obtained when a game ball enters a starting winning hole and a ready-to-win determining value for the variation-time-reduced state and an advance determining command assigning the result of comparison with a ready-to-win determining value for a non-variation-time-reduced state are input, an integrally controlling CPU determines whether a symbol variable display game based on special symbol starting suspended balls specified by the advance determining commands is a game to be executed in a variation-time-reduced state or not. When the result of determination is positive, the integrally controlling CPU uses the advance determining command assigning the result of comparison with the ready-to-win determination value for the variation-time-reduced state. On the other hand, when the result of determination is negative, the integrally controlling CPU uses the advance determining command assigning the result of comparison with the ready-to-win determining value for the non-variation-time-reduced state. In this way, the continuous presentation can be executed without interruption by ready-to-win presentation on the way even if the game state varies while the continuous presentation is executed.