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Modern casino slot machines are controlled by computer software, and the winner percentages are pre-programmed into the game software.

Casino slot machine games have Random Number Generators that are continuously generating combinations, even when the game is not currently being played.

Running concurrently with the random # generator of the casino slot machine game is the payout rate %.

The payout % controls how much the slot machine will pay, for e.g. the payout percent might be ninety percent, meaning the one arm bandit will pay ninety percent of all the bets played, and the casino gets to keep ten per cent.

This does not mean that each and every time you bet ten credits you will receive 9 in return – where’s the fun … exhilaration in that? Instead, the casino slot won’t pay out for a bit, and then suddenly go on a hot streak and you might draw the big jackpot prize.

The payout percentages will vary between the a variety of games and several of the extremely common casinos, for e.g Golden Online Casino, which puts forth a pay out rate of up to 95 percentage!

Thus, in essence, the slot machine game takes all the $$$$$ played into it and pays it out to a few chosen winners. The casino only gets to keep a relatively small per cent of all the bets put out.

The casino one armed bandit software controls every single part of the machine, from the flashing lights to the rolling of the reels.

When you hit spin on the slot machine, a combination is generated by the RNG which corresponds to the pictures on the reel.