The rules is no one can play for four minutes before it and it cant be changed for 4 mins after.aside from that it's fair game so they do it late at night at its slowest. they were testing it in vegas about 5 years ago where they now can press a button in the back to change a machines payouts. PS - And before you let them give you another 'highly regulated and cant do that speech' go ahead and google it. Sure there will he your occasional winner because there has to be.I would sincerely hope you heed my advice from personal experience and do what I will do from now on, avoid this place and the other non reporting/non held accountable casinos and go to Vegas. I play high limit and have burned through $30,000 in five months trying to give them an honest shot with no bonus rounds practically and even if you do get one on a $20-$40 bet it pays nothing. Believe me when I say they are not at all. When asked they will just say 'they are just as competitive' and leave it at that. A small google search and you will learn that they actually ARENT required by reiltators to report their percentages of payouts like Nevada and other states require. I agree with many others, these are the tightest slots I have ever seen in the world.