Modern casino Slots are controlled by computer chips and software, and the win percentages are pre-programmed into the software.

Casino slot machines have Random Number Generators that are endlessly generating combos, even when the game is not currently being played.

Running simultaneously with the RNG of the casino slot machine game is the payout rate per cent.

The pay out percent controls just how much the one-armed bandit will pay out, for example the pay out % may be ninety per cent, meaning the slot machine game will payout 90% of all the stakes played, … the casino simply gets to keep 10%.

This is not to say that every time you bet ten credits you will receive 9 in return – where is the fun … fascination in that? Instead, the casino slot machine just will not pay out for a little while, and then suddenly jump on a hot streak and you might catch the big jackpot prize.

The payout percentages will vary between the differing games and a couple of the very popular casinos, e.g. Golden Online Casino, which gives a payout rate of up to 95 %!

So, in essence, the one-armed bandit takes all the currency played into it and pays it out to some privileged winners. The casino only gets to keep a relatively tiny % of all the odds put out.

The casino one armed bandit software controls any part of the machine, from the dazzling lights to the rotating of the reels.

When you hit spin on the slot machine, a combination is produced by the RNG which associates with the pictures on the reel.