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Multiple tier gaming machine

  • US 5,263,716 A
  • Filed: 01/23/1992
  • Issued: 11/23/1993
  • Est. Priority Date: 02/08/1990
  • Status: Expired due to Fees
First Claim
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1. A gaming machine comprising control means for controlling operation of the machine, display means including a plurality of display positions for displaying combinations of indicia and reward means for returning a reward to a player of the machine in response to certain predetermined indicia combinations being displayed on the display means at the end of a game, the display means including a separate indicia display means for each display position, each indicia display means being responsive to the control means to display an indicium at the end of the game which is selected by the control means from a set of possible indicia, and the control means including indicia selection means for making that selection for each of the display positions, wherein, for at least one display position, a two tier selection process is employed whereby the set of indicia is divided into at least two subsets and the indicia selection means comprises first random number selection means for selecting a random number from a set of random numbers having members each of which uniquely corresponds to one member of a first of said subsets of the set of indicia plus additional numbers each of which uniquely corresponds to one of the remaining subsets of indicia, and second random number selection means, which is invoked only in the event of the first random number selection means selecting a number corresponding to one of said remaining subsets, the second random number selection means being arranged to select a number from a set of numbers each of which uniquely corresponds to one indicia in said one of said remaining subsets of indicia, and the display means being arranged to display the indicium corresponding to the number selected by the first random number selection means if the random number selected by the first random number selection means is a number corresponding to a member of said first of said subsets, and being arranged to display the indicium corresponding to the number selected by the second random number selection means, if the number selected by the first random number selection means is a number corresponding to one of the remaining subsets.

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