| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve such a problem that a special game for increasing/decreasing AT rights is drawn at a complete probability, with the AT rights used as seed money and, therefore, no matter how many times the special game is executed, all the result may often turn out a failure.SOLUTION: When starting a special game, a sub control part 160 draws a lottery of a winning object from a lottery content. The lottery content is made clear for a player by being displayed on a display performance device 11. The sub control part 160 presets the number K of acquisition AT games, for example, to 100 when a jackpot is produced in the special game, to 50 when a win is produced, and to 0, when a failure is produced. The sub control part sets the value based on the winning object in the special game lottery to the number K of acquisition AT games, adds it to the number N of AT games, and sets a new number N of AT games. The sub control part 160 does not return the winning object to the lottery content, but a new lottery content is set. The winning content thus does not return to the lottery content, but a new lottery content is set, so that the lottery executed in the special game is executed not at the complete probability but a conditional probability.</p> |
