A gaming device in which primary game symbols are generated in association with secondary symbols. The secondary symbols if generated in a particular combination and in a particular situation, e.g., in association with winning base game symbols, provide a benefit to the player, such as a modification...http://www.google.fr/patents/US7591724?utm_source=gb-gplus-shareBrevet US7591724 - Gaming device having a game with primary symbols, secondary symbols associated with the primary symbols and independently generated secondary symbols
Gaming device having a game with primary symbols, secondary symbols ...