Modern casino slot machines are controlled by computer chips and software, and the winner percentages are pre-programmed into the game software.
Casino one armed bandits have Random Number Generators which are constantly generating combinations, even when the game is not currently being played.
Running simultaneously with the random # generator of the casino slot machine game is the payout per cent.
The payout per cent controls how much the slot machine game will pay out, for example the payout percentage might be 90%, which means the slot machine will payout ninety percent of all the bets played, … the casino will then get to keep ten per cent.
This doesn’t imply that each and every time you bet ten credits you will receive 9 in return – where’s the fun and exhilaration in that? Instead, the casino slot machine won’t pay out for a while, and then suddenly jump on a hot streak and you might hit a big grand prize.
The payout %s will very likely vary between the different games and a few of the extremely famous casinos, e.g. Golden Online Casino, which offers a payment of up to ninety-five %!
This means that, in essence, the slot machine takes all the cash played into it and pays it out to several lucky winners. The casino only gets to keep a averagely small percentage of all the wagers made.
The casino slot software controls every part of the machine, from the blinking lights to the rotating of the reels.
When you hit spin on the slot machine, a combination is formed by the RNG which associates with the pictures on the reel.