A virtual lottery unit can be utilized by a player to play a virtual lottery. A virtual lottery ticket display is provided to display a plurality of virtual lottery ticket prices. Each of the virtual lottery ticket prices corresponds to a distinct known percentage of a progressive jackpot that can be...http://www.google.fr/patents/US7635304?utm_source=gb-gplus-shareBrevet US7635304 - Multiple levels of participation in a lottery jackpot
Multiple levels of participation in a lottery jackpot
