Modern casino slot games are controlled by a computer, and the win percentages are preprogrammed into the game software.
Casino slot machines have Random Number Generators which are continuously generating combos, even when the slot machine game is not active.
Running collectively with the random # generator of the casino one-armed bandit is the pay out percent.
The pay out % controls just how much the one-armed bandit will payout, for example the pay % might be 90%, which means the slot machine game will payout ninety percent of all the bets played, … the casino only gets to keep ten percent.
This doesn’t mean that for every time you bet 10 credits you will receive 9 in return – where is the fun and fascination in that? Instead, the casino slot machine game will not pay out for a little while, and then suddenly start up a hot streak and you might catch the big grand prize.
The payoff %s will very likely vary between the various games and a few of the very established casinos, e.g. Golden Online Casino, which hands out a payout of up to ninety-five per cent!
Thus, in essence, the slot machine game takes all the money played into it and pays it out to a few chosen winners. The casino only gets to keep a basically small per cent of all the stakes put out.
The casino one armed bandit software controls any part of the machine, from the dazzling lights to the rolling of the reels.
When you hit spin on the slot machine game, a combination is set up by the RNG which is linked to the pictures on the reel.