A method of playing a primary game on a gaming machine is performed by placing a wager on an underlying wagering primary game and playing the underlying wagering primary game according to the rules of the underlying primary game. When a predetermined event occurs in the underlying primary game, the player...http://www.google.ca/patents/US20060009277?utm_source=gb-gplus-sharePatent US20060009277 - Gaming device having an indicator operable to indicate primary game outcomes and associated bonus game opportunities
