Gaming machine that changes the number of free games depending on football game result thereof

摘要

It is determined whether to execute a mini game at least during execution of a basic game. When it is determined to execute the mini game, it is displayed the predetermined number of penalty-kick shoot-out images in a display. When the penalty-kick shoot-out ends in victory, a point-number corresponding to the number of victory times is added to an accumulated point-number. Then, a free game is executed in accordance with the accumulated point-number.