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Modern casino one armed bandits are controlled by computer chips and software, and the win %s are preprogrammed into the software.

Casino slot machines have Random Number Generators which are eternally generating combinations, even when the slot machine is not currently being played.

Running collectively with the RNG of the casino one-armed bandit is the payout %.

The pay out percent controls how much the one-armed bandit will pay out, for e.g. the payout percentage could be ninety percent, meaning the slot machine game will pay out 90% of all the wagers played, and the casino gets to keep 10%.

This does not imply that for every time you bet ten credits you will receive 9 in return – where is the fun … excitement in that? Instead, the casino slot machine game just won’t pay out for a bit, and then suddenly hit a hot streak and you might hit a big grand prize.

The pay off percentages will very likely vary between the assorted games and a few of the very established casinos, for instance Golden Online Casino, which offers a payout 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 number of lucky winners. The casino only gets to keep a relatively small percent of all the stakes allotted.

The casino slot machine software controls each part of the machine, from the blinking lights to the revolving of the reels.

When you hit spin on the slot machine game, a combination is put together by the RNG which is linked to the pictures on the reel.