Modern casino slot machine games are controlled by computer chips and software, and the winning percentages are preprogrammed into the computer software.
Casino slot games have RNGs that are continuously generating combinations, even when the slot machine game is not active.
Running jointly with the random # generator of the casino slot machine is the pay out percentage.
The pay out percent controls how much the slot machine will payout, for eg the payout percentage could be ninety per cent, which means the slot game will payout 90% of all the bets played, and the casino only gets to keep 10 per cent.
This is not to say that for every time you bet ten credits you will receive 9 in return – where’s the fun and thrill in that? Instead, the casino slot machine just won’t payout for a while, and then suddenly jump on a hot streak and you might catch the big jackpot prize.
The pay off %s will very likely vary between the various games and several of the highly established casinos, for example Golden Online Casino, which tenders a cash payment of up to 95 %!
Thus, in essence, the slot machine takes all the funds played into it and pays it out to several privileged winners. The casino only gets to keep a considerably indistinct % of all the bets made.
The casino slot machine software controls any part of the machine, from the flickering lights to the rolling of the reels.
When you hit spin on the slot machine game, a combination is set up by the RNG which associates with the pictures on the reel.