Modern casino slot games are controlled by computer chips and software, and the win percentages are pre-programmed into the game software.
Casino slot machines have RNGs which are endlessly generating combinations, even when the machine is not active.
Running simultaneously with the random # generator of the casino one-armed bandit is the payout rate %.
The pay out % controls just how much the slot machine will payout, for eg the pay out per cent could be ninety per cent, which means the slot game will pay ninety percent of all the bets played, and the casino gets to keep ten per cent.
This does not imply that each time you bet 10 credits you will receive nine in return – where is the fun and excitement in that? Instead, the casino slot machine game just won’t payout for a while, and then suddenly hit a hot streak and you might catch the big jackpot prize.
The profit percentages usually will vary between the various games and a couple of the very famous casinos, like Golden Online Casino, which hands out a payment of up to 95 percentage!
Thus, in essence, the slot machine takes all the cash played into it and pays it out to a handful of lucky winners. The casino only gets to keep a basically minute percentage of all the stakes placed.
The casino one armed bandit software controls each part of the machine, from the blinking lights to the rotating of the reels.
When you hit spin on the slot machine game, a combination is developed by the RNG which associates with the pictures on the reel.