Modern casino slot machines are controlled by computer software, and the win percentages are preprogrammed into the software.

Casino Slots have Random Number Generators which are continually generating combinations, even when the slot machine game is not active.

Running side by side with the random # generator of the casino slot machine game is the payout rate %.

The pay out per cent controls how much the slot machine game will pay, for example the pay out percentage could be ninety percent, which means the slot game will pay ninety per cent of all the wagers played, and the casino will then get to keep ten percent.

This really does not mean that each time you bet 10 credits you will receive nine in return – where’s the fun … excitement in that? Instead, the casino slot machine game just will not payout for a bit, and then suddenly jump on a hot streak and you might hit a big grand prize.

The pay off %s will vary between the different games and a few of the highly common casinos, such as Golden Online Casino, which provides a payment of up to ninety five per cent!

Thus, in essence, the one-armed bandit takes all the currency played into it and pays it out to several privileged winners. The casino only gets to keep a averagely low percentage of all the wagers put out.

The casino slot machine software controls every part of the machine, from the dazzling lights to the spinning of the reels.

When you hit spin on the slot machine game, a combination is generated by the RNG which is linked to the pictures on the reel.