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

Casino slot machines have RNGs that are ceaselessly generating combos, even when the machine is not currently being played.

Running side by side with the Random Number Generator of the casino slot machine game is the pay out per cent.

The payout % controls how much the one-armed bandit will pay out, for eg the pay percentage might be 90%, which means the slot machine will pay out 90% of all the wagers played, … the casino gets to keep 10 percent.

This really does not mean that each time you bet 10 credits you will receive 9 in return – where’s the fun … excitement in that? Instead, the casino slot will not pay out for a little while, and then suddenly jump on a hot streak and you might draw the big pot prize.

The pay out %s will most likely vary between the various games and several of the very popular casinos, e.g. Golden Online Casino, which offers a payment of up to ninety five per cent!

Therefore, in essence, the slot machine game takes all the funds played into it and pays it out to a few chosen winners. The casino only gets to keep a fairly minute percent of all the stakes put out.

The casino slot software controls any part of the machine, from the blinking lights to the rotating of the reels.

When you hit spin on the one-armed bandit, a combination is produced by the RNG which corresponds to the pictures on the reel.