Abstract: An accumulator for a multiple jackpot gaming system wherein the accumulator has the facility for date stamping jackpot-wins, recording the identification of devices and changes being made by such devices to its data and/or programming, allocating coins-in to one or more jackpot groups and/or to one or more increment rates assigned to a particular jackpot group, operate its jackpot stack so as to clear stack positions immediately upon clearing a jackpot, and control jackpot handling from its main programming loop.

Abstract: A gaming system in which a plurality of gaming machines are provided with an additional progressive jackpot gaming system which allows players on the gaming machines to play for a jackpot provided by the progressive system. The controller of the progressive system generates in random fashion at the beginning of a game cycle a jackpot-win value for the progressive jackpot which is displayed to the players of the gaming machine from the beginning of the game cycle. The controller also randomly generates a parameter for use with unit bet information from the gaming machines in determining a current jackpot value. When the current jackpot value is brought to the jackpot-win value, the gaming machine responsible is the winner of the progressive jackpot. Also disclosed is the generation by the progressive controller of signalling which is supplied to a winning gaming machine and causes the machine to make the jackpot payout.

Abstract: A progressive gaming system in which the gaming machines linked to the system have different play characteristics, e.g. different Denominations and Hit Frequencies, and wherein the system is further adapted such that the dollars contributed to the progressive jackpot for a machine per win on that machine is approximately equal for the different machines.