Modern casino Slots are controlled by computer chips and software, and the win percentages are pre-programmed into the gaming software.
Casino slot machines have Random Number Generators that are continually generating combinations, even when the game is not active.
Running synchronously with the Random Number Generator of the casino slot machine game is the payout rate %.
The payout % controls just how much the slot machine game will pay out, for example the pay percentage could be 90%, which means the slot game will payout ninety per cent of all the wagers played, and the casino gets to keep 10 percent.
This does not mean that each and every time you bet ten credits you will receive 9 in return – where’s the fun and thrill in that? Instead, the casino slot will not pay out for a while, and then suddenly start up a hot streak and you might draw the big jackpot.
The profit percentages will vary between the alternate games and some of the most common casinos, e.g. Golden Online Casino, which tenders a cash payment of up to 95 percent!
Hence, in essence, the slot machine game takes all the funds played into it and pays it out to a number of chosen winners. The casino only gets to keep a considerably low percent of all the stakes put out.
The casino slot machine software controls every single part of the machine, from the blinking lights to the rolling of the reels.
When you hit spin on the slot machine game, a combination is generated by the RNG which is linked to the pictures on the reel.