Modern casino slot machine games are controlled by computer chips and software, and the win %s are preprogrammed into the software.
Casino slot games have Random Number Generators that are eternally generating combos, even when the machine is not currently being played.
Running side by side with the RNG of the casino slot machine game is the payout rate %.
The payout % controls just how much the slot machine game will pay, for eg the pay per cent may be ninety percent, which means the slot game will payout ninety percent of all the wagers played, and the casino simply gets to keep ten percent.
This does not mean that for every time you bet 10 credits you will receive 9 in return – where is the fun and thrill in that? Instead, the casino slot machine game just won’t payout for a while, and then suddenly fire up a hot streak and you might draw the big top prize.
The payoff percentages will definitely vary between the various games and a couple of the most acclaimed casinos, e.g. Golden Online Casino, which provides a pay out of up to 95 per cent!
Hence, in essence, the one-armed bandit takes all the cash played into it and pays it out to several privileged winners. The casino only gets to keep a averagely small percentage of all the stakes allotted.
The casino slot software controls each part of the machine, from the dazzling lights to the circulating 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.