A method for providing bonus jackpot payoffs during a bonus mode time period in a system of linked gaming machines interconnected to a controller. Eligible gaming machines are determined at the time the bonus time period starts. Once the bonus mode time period starts, a portion of the eligible gaming...http://www.google.de/patents/US6217448?utm_source=gb-gplus-sharePatent US6217448 - Controller-based linked gaming machine bonus system
