Modern casino slot machines are controlled by computer chips and software, and the winning %s are pre-programmed into the gaming software.
Casino slot machine games have Random # Generators which are continually generating combinations, even when the game is not being played.
Running synchronously with the Random Number Generator of the casino one-armed bandit is the payout percent.
The pay out percent controls how much the slot machine game will payout, for e.g. the pay out per cent might be 90%, which means the slot machine game will pay out ninety percent of all the stakes played, … the casino only gets to keep ten per cent.
This really does not mean that every time you bet ten credits you will receive nine in return – where is the fun and thrill in that? Instead, the casino slot just won’t pay out for a while, and then suddenly hit a hot streak and you might hit a big top prize.
The pay off percentages will tend to vary between the differing games and several of the very common casinos, for instance Golden Online Casino, which gives a pay out rate of up to ninety-five percent!
This means that, in essence, the slot machine game takes all the $$$$$ played into it and pays it out to a couple of chosen winners. The casino only gets to keep a fairly low % of all the stakes allotted.
The casino slot software controls every part of the machine, from the blinking lights to the revolving of the reels.
When you hit spin on the one-armed bandit, a combination is produced by the RNG which associates with the pictures on the reel.