Modern casino one armed bandits are controlled by a computer, and the winner percentages are pre-programmed into the gaming software.
Casino slot machines have Random # Generators that are ceaselessly generating combos, even when the slot machine game is not active.
Running concurrently with the random # generator of the casino one-armed bandit is the payout rate percent.
The pay out percentage controls how much the slot machine will pay out, for e.g. the pay percentage might be ninety percent, meaning the slot machine will pay out 90% of all the bets played, and the casino gets to keep ten per cent.
This really does not mean that every time you bet ten credits you will receive 9 in return – where is the fun … excitement in that? Instead, the casino slot machine just won’t payout for a bit, and then suddenly jump on a hot streak and you might draw the big jackpot.
The payout %s will very likely vary between the various games and some of the highly acclaimed casinos, for example Golden Online Casino, which hands out a payout rate of up to 95 per cent!
Thus, in essence, the one-armed bandit takes all the currency played into it and pays it out to several chosen winners. The casino only gets to keep a averagely tiny per cent of all the wagers put out.
The casino slot software controls every single part of the machine, from the flickering lights to the spinning of the reels.
When you hit spin on the slot machine, a combination is developed by the RNG which corresponds to the pictures on the reel.