Systems, methods and gaming sets for progressive games, including progressive pull-tab games. The gaming sets include a plurality of plays, which in some embodiments take the form of pull-tab cards, and in some embodiments are electronic plays. The plays are associated with indicia of redemption value,...http://www.google.de/patents/US7033271?utm_source=gb-gplus-sharePatent US7033271 - Method, apparatus and gaming set for use in a progressive game
