A method of gaming and related gaming devices and systems. A base, or primary game is employed wherein qualification for an additional feature event is based upon one or more predetermined activities associated with the primary game. The primary game may include a slot machine type game, video poker,...http://www.google.de/patents/US6786824?utm_source=gb-gplus-sharePatent US6786824 - Method, apparatus, and system for providing a player with opportunities to win a feature event award
