Patent ID: 7284756

Claim:
A method for operating a mechanical casino bonus game to provide a constant player expected value for play of the mechanical casino bonus game in the presence of mechanical bias, the mechanical casino bonus game having a game outcome selected mechanically from a number of game outcomes, play of the mechanical casino bonus game occurring in conjunction with play of an underlying casino game, the method for operating comprising: commencing play of the mechanical casino bonus game when a bonus game condition occurs in play of the underlying casino game; randomly assigning a bonus payoff from a set number of bonus payoffs for each game outcome in the number of game outcomes for the aforesaid play of the mechanical casino bonus game, the set number being greater than one; mechanically selecting one of the set number of game outcomes during play of the mechanical casino bonus game; awarding a player the random bonus payoff assigned to the mechanically selected one game outcome; providing the constant player expected value for the mechanical casino bonus game over all play of the mechanical casino bonus game even in the presence of mechanical bias.