Modern casino slot games are controlled by computer chips and software, and the win %s are pre-programmed into the gaming software.
Casino slot games have RNGs that are ceaselessly generating combinations, even when the game is not being played.
Running concurrently with the random # generator of the casino slot machine game is the payout per cent.
The pay out percentage controls how much the one-armed bandit will payout, for example the pay per cent may be ninety per cent, meaning the slot machine game will payout ninety percent of all the wagers played, and the casino will then get to keep 10%.
This really does not mean that each time you bet 10 credits you will receive nine in return – where’s the fun … fascination in that? Instead, the casino slot machine won’t pay out for a little while, and then suddenly fire up a hot streak and you might draw the big pot prize.
The payoff percentages shall vary between the various games and a couple of the highly famous casinos, e.g. Golden Online Casino, which tenders a payout rate of up to ninety-five per cent!
So, in essence, the one-armed bandit takes all the $$$$$ played into it and pays it out to a few fortunate winners. The casino only gets to keep a basically petite % of all the bets placed.
The casino slot software controls every single part of the machine, from the blinking lights to the revolving of the reels.
When you hit spin on the slot machine, a combination is produced by the RNG which corresponds to the pictures on the reel.