A method and gaming device, such as a slot machine, is disclosed that generates a spin results which are used to determine a player's progress toward a secondary or overall game objective. The secondary game objective may include completing a set or a collection. A game objective may instruct a player...http://www.google.de/patents/US7874908?utm_source=gb-gplus-sharePatent US7874908 - Method and apparatus for payouts determined based on a set completion game
