Modern casino one armed bandits are controlled by a computer, and the win %s are preprogrammed into the game software.
Casino Slots have Random Number Generators that are endlessly generating combinations, even when the game is not currently being played.
Running concurrently with the Random Number Generator of the casino slot machine is the pay out percentage.
The payout percentage controls just how much the one-armed bandit will payout, for example the pay percent may be ninety per cent, which means the slot game will pay 90% of all the stakes played, … the casino gets to keep ten percent.
This really does not mean that every time you bet 10 credits you will receive 9 in return – where is the fun and exhilaration in that? Instead, the casino one arm bandit won’t pay out for a bit, and then suddenly jump on a hot streak and you might draw the big top prize.
The pay off %s will most likely vary between the alternate games and a couple of the extremely popular casinos, e.g. Golden Online Casino, which provides a pay out of up to ninety-five per cent!
Therefore, in essence, the slot machine game takes all the money played into it and pays it out to several privileged winners. The casino only gets to keep a generally minute percent of all the plays made.
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 slot machine, a combination is set up by the RNG which corresponds to the pictures on the reel.