Modern casino one armed bandits are controlled by computer chips and software, and the win %s are preprogrammed into the gaming software.
Casino one armed bandits have RNGs that are constantly generating combos, even when the slot machine is not being played.
Running concurrently with the RNG of the casino slot machine game is the pay out percentage.
The payout percentage controls just how much the slot machine game will pay, for e.g. the pay out percentage could be ninety per cent, meaning the one arm bandit will payout ninety percent of all the bets played, and the casino will then get to keep 10 per cent.
This is not to say that for every time you bet ten credits you will receive nine in return – where is the fun … fascination in that? Instead, the casino one arm bandit won’t pay out for a bit, and then suddenly hit a hot streak and you might hit a big grand prize.
The pay out percentages will tend to vary between the different games and some of the very common casinos, for e.g Golden Online Casino, which puts forth a cash payment of up to ninety-five %!
So, in essence, the slot machine takes all the dough played into it and pays it out to a handful of chosen winners. The casino only gets to keep a basically small percent of all the gambles put out.
The casino slot software controls any part of the machine, from the blinking lights to the rolling of the reels.
When you hit spin on the one-armed bandit, a combination is developed by the RNG which relates to the pictures on the reel.