Modern casino slot games are controlled by computer chips and software, and the winner percentages are pre-programmed into the gaming software.
Casino slot machine games have Random # Generators that are ceaselessly generating combos, even when the slot machine game is not active.
Running side by side with the random # generator of the casino slot machine is the pay out rate percentage.
The payout percent controls just how much the slot machine game will pay, for e.g. the pay per cent may be ninety percent, meaning the slot game will payout ninety percent of all the wagers played, … the casino gets to keep 10%.
This does not imply that each time you bet 10 credits you will receive 9 in return – where is the fun … excitement in that? Instead, the casino one arm bandit just will not payout for a little while, and then suddenly start up a hot streak and you might catch the big pot prize.
The payout %s shall vary between the a variety of games and a couple of the notably popular casinos, e.g. Golden Online Casino, which puts forth a payout rate of up to 95 percent!
Therefore, in essence, the slot machine game takes all the $$$$$ played into it and pays it out to some privileged winners. The casino only gets to keep a fairly low per cent of all the stakes allocated.
The casino slot machine software controls each and every part of the machine, from the blinking lights to the spinning of the reels.
When you hit spin on the one-armed bandit, a combination is produced by the RNG which corresponds to the pictures on the reel.