operating a rewards server coupled to the plurality of gaming machines by a network to provide one or more system games to the plurality of gaming machines, wherein {HEAD ~ the rewards server} maintains {TAIL ~ an account} associated with the rewards qualified user at the plurality of gaming machines and wherein winnings of the rewards qualified user from the plurality of gaming machines are deposited into the account 
maintains
operating a rewards server coupled to the plurality of gaming machines by a network to provide one or more system games to the plurality of gaming machines , wherein { HEAD ~ the rewards server } maintains { TAIL ~ an account } associated with the rewards qualified user at the plurality of gaming machines and wherein winnings of the rewards qualified user from the plurality of gaming machines are deposited into the account
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