Modern casino slot games are controlled by computer chips and software, and the winner percentages are pre-programmed into the software.
Casino slot machine games have RNGs which are endlessly generating combos, even when the game is not active.
Running synchronously with the random # generator of the casino slot machine game is the payout rate per cent.
The payout percentage controls just how much the one-armed bandit will pay out, for eg the pay out % could be 90%, meaning the slot machine will pay out ninety per cent of all the bets played, and the casino gets to keep 10 percent.
This is not to say that each time you bet ten credits you will receive 9 in return – where’s the fun … excitement in that? Instead, the casino slot machine will not payout for a bit, and then suddenly jump on a hot streak and you might hit a big pot prize.
The profit %s will definitely vary between the different games and some of the very popular casinos, e.g. Golden Online Casino, which offers a payout rate of up to ninety-five percent!
Hence, in essence, the one-armed bandit takes all the currency played into it and pays it out to several fortunate winners. The casino only gets to keep a basically indistinct per cent of all the gambles put out.
The casino one armed bandit software controls each and every part of the machine, from the flickering lights to the revolving of the reels.
When you hit spin on the slot machine, a combination is produced by the RNG which corresponds to the pictures on the reel.