Modern casino slot machine games are controlled by computer software, and the winner %s are preprogrammed into the gaming software.
Casino Slots have Random # Generators which are endlessly generating combinations, even when the slot machine is not being played.
Running concurrently with the RNG of the casino slot machine game is the payout rate %.
The payout percentage controls just how much the one-armed bandit will payout, for example the pay % may be 90%, which means the slot game will pay 90% of all the wagers played, and the casino only gets to keep 10%.
This does not imply that each time you bet 10 credits you will receive nine in return – where is the fun and thrill in that? Instead, the casino one arm bandit will not pay out for a while, and then suddenly hit a hot streak and you might draw the big grand prize.
The pay out percentages will very likely vary between the different games and a few of the notably common casinos, such as Golden Online Casino, which puts forth a payout rate of up to 95 percent!
So, in essence, the slot machine takes all the funds played into it and pays it out to a few fortunate winners. The casino only gets to keep a considerably small per cent of all the odds made.
The casino one armed bandit 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 generated by the RNG which associates with the pictures on the reel.