Patent ID: 8235807

Claim:
A gaming machine, comprising: one or more active games; one or more removed games; and an accounting system, comprising: a first type of meter set wherein each active game on the gaming machine comprises a meter set of the first type; and a second type of meter set associated with all games that have been removed from the gaming machine for accumulating and storing game accounting information associated with the removed games, captured prior to each game's removal from the gaming machine; wherein the accounting system accesses the first type of meter set and second type of meter set and determines an overall gaming machine performance by comparing a calculated theoretical win value with a return percentage of the gaming machine, wherein the calculated theoretical win value is a theoretical performance of the gaming machine based on a theoretical payout percentage and the first type of meter set and second type of meter set game meters and the return percentage is only based on the first type of meter set and second type of meter set, wherein the theoretical payout percentage is the percentage of winnings a game is programmed to theoretically pay out over time.