Modern casino one armed bandits are controlled by computer chips and software, and the winning percentages are pre-programmed into the game software.
Casino slot games have Random Number Generators that are continuously generating combinations, even when the game is not currently being played.
Running collectively with the RNG of the casino one-armed bandit is the payout percent.
The payout percent controls how much the slot machine will payout, for e.g. the pay % could be ninety percent, meaning the slot game will pay out ninety per cent of all the bets played, and the casino simply gets to keep ten per cent.
This does not mean that for every time you bet 10 credits you will receive nine in return – where’s the fun and thrill in that? Instead, the casino slot will not pay out for a little while, and then suddenly start up a hot streak and you might hit a big pot prize.
The pay off %s shall vary between the differing games and several of the notably favored casinos, e.g. Golden Online Casino, which puts forth a payout rate of up to 95 percent!
This means that, in essence, the one-armed bandit takes all the money played into it and pays it out to a handful of lucky winners. The casino only gets to keep a averagely tiny per cent of all the bets put out.
The casino slot software controls any part of the machine, from the flashing lights to the rotating of the reels.
When you hit spin on the slot machine, a combination is developed by the RNG which associates with the pictures on the reel.