The simplest game at the casino to play is the one in which you spin the wheels and take your chances. Players have no control over which winning combinations are generated or when a jackpot is won. You can’t tell whether a machine is hot or cold just by looking at it. However, there are a few risks. Making sure you know what kind of machine you’re dealing with is essential. The three most common varieties of roll-spinning slots are the multiplier, the buy-a-pay, and the progressive.