Modern casino slot games are controlled by a computer, and the winning percentages are pre-programmed into the computer software.
Casino Slots have RNGs which are continually generating combinations, even when the slot machine is not currently being played.
Running simultaneously with the random # generator of the casino one-armed bandit is the payout per cent.
The payout % controls just how much the slot machine game will pay out, for e.g. the payout % could be ninety per cent, which means the slot game will pay 90% of all the stakes played, … the casino simply gets to keep ten percent.
This is not to say that for every time you bet 10 credits you will receive nine in return – where is the fun and thrill in that? Instead, the casino slot machine game just will not payout for a little while, and then suddenly start up a hot streak and you might catch the big top prize.
The profit %s will very likely vary between the a variety of games and a couple of the extremely popular casinos, for example Golden Online Casino, which gives a payout rate of up to ninety five per cent!
So, in essence, the slot machine takes all the $$$$$ played into it and pays it out to a handful of fortunate winners. The casino only gets to keep a basically tiny per cent of all the stakes put out.
The casino slot machine software controls every single 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 is linked to the pictures on the reel.