A gaming system including a central server linked to a plurality of gaming machines. The gaming system includes at least one and preferably a plurality of progressive awards which are each associated with a supplemental fund or pool. If the gaming system determines that the progressive award is not growing at a designated incremental rate (due to a lack of wagers placed on gaming devices associated with the progressive award), the gaming system utilizes part or all of the amount in the supplemental fund to make up for this lack of wager based growth. Such a configuration provides that even if players are not actively playing gaming devices associated with the progressive award, the progressive award will still increment at a designated rate to at least a desirable value.