A method for playing a wagering game allowing a player to be eligible for a progressive jackpot having an actual value. The method comprises conducting the wagering game that has a randomly selected outcome selected from a plurality of outcomes, and displaying a displayed value of the progressive jackpot...http://www.google.com.hk/patents/US20060035706?utm_source=gb-gplus-share專利 US20060035706 - Wagering game with payoff rounding feature