Patent ID: 8317605
Filing Date: 2012-11-27
Classification: A63F,G07F

Abstract:
1. A method of gaming comprising conducting one or more paid game rounds on a gaming machine having a display initiated in response to the payment of a wager by a player and a series of one or more free game rounds on the gaming machine initiated in response to a free game series trigger event, the method comprising: in each paid game round, selecting a set of paid game round symbols for display on the display to the player, determining a paid game round outcome based on the selected symbols, and incrementing a jackpot by a paid game jackpot increment; in each free game round, selecting a set of free game round symbols for display on the display to the player, determining a free game round outcome based on the selected symbols, and incrementing the jackpot by a free game jackpot increment; and awarding the jackpot on the occurrence of a jackpot award event, wherein the paid game jackpot increment, the free game jackpot increment, an expected number of free game rounds in each series of free game rounds and an average number of game rounds between the free game series trigger events are together chosen so as to provide an expected average jackpot increment per unit wager equal to a desired amount.