Modern casino slot machine games are controlled by a computer, and the win %s are preprogrammed into the gaming software.
Casino slot machine games have RNGs that are endlessly generating combinations, even when the machine is not being played.
Running collectively with the RNG of the casino slot machine is the pay out percentage.
The pay out percent controls just how much the one-armed bandit will pay, for example the pay out percent might be 90%, which means the slot machine will pay ninety percent of all the bets played, … the casino gets to keep 10 per cent.
This does not mean that each and every time you bet ten credits you will receive nine in return – where is the fun … excitement in that? Instead, the casino slot just won’t payout for a little while, and then suddenly go on a hot streak and you might draw the big grand prize.
The profit %s will very likely vary between the various games and a handful of the notably acclaimed casinos, for instance Golden Online Casino, which hands out a payout of up to ninety-five percent!
Therefore, in essence, the slot machine takes all the money played into it and pays it out to a handful of lucky winners. The casino only gets to keep a considerably small per cent of all the bets put out.
The casino slot software controls every part of the machine, from the flickering lights to the spinning 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.