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Modern casino slot games are controlled by computer chips and software, and the winning percentages are pre-programmed into the software.

Casino one armed bandits have Random Number Generators that are eternally generating combos, even when the game is not active.

Running concurrently with the RNG of the casino one-armed bandit is the payout rate percentage.

The payout % controls how much the slot machine game will payout, for example the pay out per cent may be ninety percent, which means the one arm bandit will pay out ninety per cent of all the stakes played, and the casino simply gets to keep 10%.

This is not to say that every time you bet ten credits you will receive nine in return – where’s the fun … thrill in that? Instead, the casino slot machine game will not payout for a little while, and then suddenly start up a hot streak and you might draw the big grand prize.

The payout percentages will definitely vary between the differing games and a couple of the very common casinos, for example Golden Online Casino, which gives a pay out rate of up to 95 percent!

So, in essence, the slot machine takes all the currency played into it and pays it out to several fortunate winners. The casino only gets to keep a fairly indistinct % of all the gambles allocated.

The casino slot software controls each and every 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 put together by the RNG which is linked to the pictures on the reel.