Modern casino one armed bandits are controlled by a computer, and the winner %s are pre-programmed into the game software.
Casino slot machine games have Random Number Generators which are ceaselessly generating combinations, even when the slot machine game is not being played.
Running side by side with the Random Number Generator of the casino slot machine is the payout rate percent.
The pay out percent controls just how much the slot machine will pay, for e.g. the payout percent might be ninety percent, which means the one arm bandit will pay ninety per cent of all the wagers played, and the casino simply gets to keep 10 percent.
This is not to say that each and 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 fire up a hot streak and you might catch the big grand prize.
The payoff percentages shall vary between the various games and several of the highly established casinos, for e.g Golden Online Casino, which offers a pay out of up to ninety-five %!
So, in essence, the one-armed bandit takes all the $$$$$ played into it and pays it out to a handful of lucky winners. The casino only gets to keep a relatively small % of all the wagers allocated.
The casino one armed bandit software controls each and every part of the machine, from the flashing lights to the revolving of the reels.
When you hit spin on the one-armed bandit, a combination is put together by the RNG which associates with the pictures on the reel.