Modern casino slot machines are controlled by computer chips and software, and the winning percentages are preprogrammed into the gaming software.
Casino slot machines have Random Number Generators that are continually generating combinations, even when the slot machine game is not active.
Running synchronously with the random # generator of the casino slot machine game is the payout per cent.
The payout % controls how much the slot machine will pay, for example the pay % may be 90%, meaning the slot machine will pay out 90% of all the bets played, … the casino only gets to keep 10 per cent.
This doesn’t mean that for every time you bet ten credits you will receive nine in return – where’s the fun … excitement in that? Instead, the casino slot will not pay out for a while, and then suddenly fire up a hot streak and you might draw the big pot prize.
The profit percentages will tend to vary between the differing games and a handful of the notably acclaimed casinos, such as Golden Online Casino, which gives a cash payment of up to 95 percent!
So, in essence, the slot machine game takes all the cash played into it and pays it out to a few privileged winners. The casino only gets to keep a averagely tiny % of all the wagers made.
The casino slot software controls each and every part of the machine, from the flashing lights to the turning of the reels.
When you hit spin on the slot machine, a combination is produced by the RNG which connects with the pictures on the reel.