Modern casino slot machine games are controlled by computer chips and software, and the winning percentages are pre-programmed into the software.
Casino slot machine games have Random Number Generators that are constantly generating combinations, even when the slot machine game is not active.
Running collectively with the Random Number Generator of the casino slot machine game is the payout rate %.
The pay out percentage controls how much the one-armed bandit will pay, for e.g. the pay out percent may be 90%, meaning the slot machine game will payout ninety percent of all the bets played, and the casino simply gets to keep ten percent.
This doesn’t mean that every 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 pay out for a little while, and then suddenly fire up a hot streak and you might hit a big pot prize.
The pay out percentages will tend to vary between the alternate games and some of the highly acclaimed casinos, like Golden Online Casino, which provides a cash payment of up to ninety-five per cent!
Therefore, in essence, the slot machine takes all the $$$$$ played into it and pays it out to a few fortunate winners. The casino only gets to keep a relatively indistinct percentage of all the stakes put out.
The casino one armed bandit software controls each and every part of the machine, from the blinking lights to the turning of the reels.
When you hit spin on the slot machine game, a combination is generated by the RNG which associates with the pictures on the reel.