Modern casino slot machines are controlled by computer software, and the winning %s are preprogrammed into the gaming software.
Casino slot machine games have Random # Generators which are constantly generating combinations, even when the game is not being played.
Running side by side with the Random Number Generator of the casino slot machine is the payout percentage.
The pay out % controls how much the slot machine game will payout, for e.g. the pay per cent might be 90%, meaning the slot machine game will payout ninety percent of all the bets played, and the casino gets to keep 10%.
This really does not mean that each and every time you bet ten credits you will receive nine in return – where’s the fun and excitement in that? Instead, the casino slot won’t pay out for a bit, and then suddenly start up a hot streak and you might draw the big jackpot prize.
The payout percentages will vary between the different games and a handful of the very famous casinos, such as Golden Online Casino, which puts forth a pay out rate of up to 95 per cent!
So, in essence, the slot machine game takes all the money played into it and pays it out to a handful of privileged winners. The casino only gets to keep a relatively indistinct percent of all the stakes placed.
The casino slot software controls every single part of the machine, from the flickering lights to the rotating of the reels.
When you hit spin on the slot machine, a combination is put together by the RNG which associates with the pictures on the reel.