The apparatus includes memory for storing prize values and an input device being responsive to a plurality of gaming terminals for providing an increment signal which adjusts an accumulated value. A comparator determines when the current prize value to be awarded, reaches the accumulated value generates an award signal and removes from the one of the sets the prize awarded. A controller responsive to the award signal determines if the one of the sets includes at least one remaining prize value and, if so, actuating the increment device to define the current prize value as the at least one remaining prize value.