A lottery-type game is played with a first level game and at least one second level or additional level game. The first level game includes a plurality of first level game records, each having an associated outcome. At least one outcome is a negotiable outcome. The second level game is related to the...http://www.google.fr/patents/US6220961?utm_source=gb-gplus-shareBrevet US6220961 - Multi-level lottery-type gaming method and apparatus
Multi-level lottery-type gaming method and apparatus
