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.ca/patents/US6793219?utm_source=gb-gplus-sharePatent US6793219 - Accumulation variation of lottery-style games of chance
