You can use coins or play with real money, depending on both you are the most comfortable. When you start playing, play small sums of money to test the slot machine and make sure it will not deceive your gains. Most of the time, you can tell if you will deceive the payment - if it seems much smaller than expected, it will probably do it. In addition, if you hear a dentist when you press the button to rotate the rollers, it means that the sluice machine is cheating on you.