each screen is completed when the bar is completely emptied of customers. the bartender then pours/consumes a drink of his own with humorous results involving the empty mug, such as getting it stuck on his head or stubbing his toe when he tries to kick it. as the game progresses, the customers appear more frequently, move faster along the bar, and are pushed back shorter distances when they catch their drinks. in addition, the maximum number of customers per bar gradually increases until every bar can have up to four customers at a time.