Modern casino one armed bandits are controlled by a computer, and the winning %s are pre-programmed into the software.

Casino slot machine games have RNGs which are eternally generating combinations, even when the game is not active.

Running in unison with the random # generator of the casino slot machine is the pay out rate percent.

The pay out percentage controls how much the slot machine game will pay, for e.g. the payout percent might be ninety percent, which means the one arm bandit will pay out ninety percent of all the bets played, … the casino gets to keep 10%.

This doesn’t imply that for every time you bet 10 credits you will receive nine in return – where’s the fun and excitement in that? Instead, the casino one arm bandit will not payout for a bit, and then suddenly jump on a hot streak and you might hit a big jackpot.

The payoff %s will tend to vary between the various games and a handful of the notably acclaimed casinos, for instance Golden Online Casino, which tenders a payout of up to ninety-five %!

Hence, in essence, the slot machine takes all the $$$$$ played into it and pays it out to a couple of lucky winners. The casino only gets to keep a basically minute percent of all the plays placed.

The casino slot machine software controls every single part of the machine, from the blinking lights to the rotating 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.