Patent attributes
A gaming machine for conducting a wagering game includes a display for displaying a plurality of symbols, the symbols indicating a randomly-selected outcome selected from a plurality of outcomes. The plurality of outcomes include at least one winning outcome wherein the winning outcome is associated with a bonus award. The gaming machine includes a controller operative to vary and display at least a portion of the plurality of symbols. If the symbols indicate the winning outcome, the controller is operative to award a payoff associated with the winning outcome and change the value of the bonus award for a future play of the gaming machine.