A variation of a lottery-type game of chance where each drawing is not only a stand-alone event, but each entry is also valid for a defined number of accumulation rounds. The numbers selected for the entry are then compared to a predefined number of consecutive drawings. The total number of matches (or...http://www.google.fr/patents/US6874783?utm_source=gb-gplus-shareBrevet US6874783 - Single game variant of accumulation lotto
