Modern casino slot machine games are controlled by a computer, and the win %s are preprogrammed into the game software.
Casino slot games have Random # Generators which are constantly generating combos, even when the machine is not being played.
Running collectively with the Random Number Generator of the casino slot machine is the pay out rate %.
The pay out percentage controls just how much the one-armed bandit will pay out, for eg the pay out percentage may be 90%, which means the one arm bandit will pay out ninety per cent of all the stakes played, and the casino will then get to keep 10%.
This is not to say that each time you bet 10 credits you will receive nine in return – where is the fun and exhilaration in that? Instead, the casino slot machine just will not payout for a little while, and then suddenly hit a hot streak and you might hit a big grand prize.
The payoff percentages will vary between the different games and just a few of the highly favored casinos, for e.g Golden Online Casino, which puts forth a cash payment of up to ninety five percentage!
Thus, in essence, the one-armed bandit takes all the currency played into it and pays it out to some chosen winners. The casino only gets to keep a averagely minute % of all the gambles put out.
The casino one armed bandit software controls every single part of the machine, from the flickering lights to the circulating of the reels.
When you hit spin on the slot machine game, a combination is formed by the RNG which is linked to the pictures on the reel.