Modern casino slot machine games are controlled by computer chips and software, and the win %s are pre-programmed into the gaming software.
Casino slot machine games have RNGs which are continuously generating combos, even when the slot machine is not active.
Running side by side with the Random Number Generator of the casino one-armed bandit is the pay out rate percent.
The pay out % controls how much the slot machine will payout, for e.g. the pay % might be 90%, meaning the slot machine will pay out ninety per cent of all the stakes played, and the casino gets to keep 10%.
This is not to say that each time you bet ten credits you will receive nine in return – where’s the fun and exhilaration in that? Instead, the casino one arm bandit will not pay out for a bit, and then suddenly go on a hot streak and you might hit a big grand prize.
The profit %s usually will vary between the alternate games and a few of the highly common casinos, for example Golden Online Casino, which offers a payment of up to ninety five percent!
This means that, in essence, the one-armed bandit takes all the money played into it and pays it out to a couple of privileged winners. The casino only gets to keep a fairly minute percentage of all the odds allotted.
The casino slot software controls every part of the machine, from the blinking lights to the turning of the reels.
When you hit spin on the slot machine game, a combination is developed by the RNG which relates to the pictures on the reel.