Modern casino slot games are controlled by a computer, and the winning %s are pre-programmed into the computer software.
Casino slot machine games have Random # Generators which are constantly generating combinations, even when the slot machine is not being played.
Running concurrently with the RNG of the casino slot machine is the pay out %.
The payout % controls how much the slot machine game will pay out, for eg the pay out percentage might be ninety percent, which means the slot machine game will pay out ninety per cent of all the stakes played, … the casino will then get to keep 10%.
This is not to say that each time you bet 10 credits you will receive 9 in return – where’s the fun … exhilaration in that? Instead, the casino slot machine game just will not pay out for a little while, and then suddenly hit a hot streak and you might catch the big jackpot.
The pay off %s will very likely vary between the assorted games and several of the extremely established casinos, e.g. Golden Online Casino, which hands out a payout rate of up to 95 per cent!
Therefore, in essence, the one-armed bandit takes all the $$$$$ played into it and pays it out to several privileged winners. The casino only gets to keep a relatively low % of all the gambles allocated.
The casino slot machine software controls each part of the machine, from the blinking lights to the circulating of the reels.
When you hit spin on the slot machine, a combination is produced by the RNG which is linked to the pictures on the reel.