Modern casino slot games are controlled by computer chips and software, and the winning %s are pre-programmed into the computer software.

Casino slot machines have RNGs which are eternally generating combinations, even when the machine is not active.

Running synchronously with the random # generator of the casino slot machine game is the payout rate percent.

The pay out percent controls just how much the slot machine game will pay out, for eg the payout per cent may be ninety per cent, meaning the one arm bandit will pay out 90% of all the stakes played, and the casino simply gets to keep ten per cent.

This really does not mean that every time you bet 10 credits you will receive nine in return – where is the fun … thrill in that? Instead, the casino slot machine just will not pay out for a while, and then suddenly start up a hot streak and you might hit a big jackpot prize.

The pay out percentages will vary between the a variety of games and some of the most popular casinos, for example Golden Online Casino, which hands out a pay out rate of up to 95 per cent!

Hence, in essence, the one-armed bandit takes all the funds played into it and pays it out to a number of fortunate winners. The casino only gets to keep a generally tiny per cent of all the odds made.

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

When you hit spin on the slot machine game, a combination is set up by the RNG which connects with the pictures on the reel.