GAME SYSTEM, JACK-POT LOT DEVICE CONSTITUTING THE GAME SYSTEM, AND GAME MACHINE

摘要

When a jack-pot lot device is applied to a game system where game machines are divided into groups and controlled, control of the payout rate of each group is facilitated. A jack-pot lot device performs group lot for selecting one win group from among groups and winner determination of determining a winner from among the players playing a game machine of the win group thereby to perform jack-pot lot. The sum of amounts of pool of the game machines of each of the groups from a predetermined point of time is referred to as the amount of pool group by group. The total amount of payment objects paid to the players who are playing the game machines of the each group and win jack-pot prizes from the predetermined point of time is subtracted from the amount of pool group by group. The difference is referred to as a jack-pot balance of the each group. If the sum of the jack-pot balance of the each group and the preset maximum loss of the each group is over the jack-pot reserve, the group is excluded from the jack-pot lot object groups, and the group lot is performed.