A progressive gaming method includes producing a set of game records with each game record being associated with a result in a game. Progressive prize bearing records are included in the set of game records according to a progressive win frequency rule. Each progressive prize bearing record is associated...http://www.google.de/patents/US20050137010?utm_source=gb-gplus-sharePatent US20050137010 - Progressive gaming method, apparatus, and program product for lottery-type gaming systems
