A gaming machine's payout is controlled by payout data. In one embodiment the payout data is written in a high level format, such as in a format that is readable by an individual to allow the identification of specific payout parameters in the payout data. In one embodiment the payout data is stored on mass media or removable media located in the gaming machine that makes the payout data easily accessible and less expensive than media used in the prior art. As a result, the payout data may be efficiently modified, updated, or distributed.