Modern casino slot games are controlled by a computer, and the win percentages are preprogrammed into the software.
Casino slot machines have RNGs that are eternally generating combinations, even when the slot machine is not active.
Running simultaneously with the RNG of the casino slot machine game is the payout percentage.
The pay out per cent controls how much the one-armed bandit will pay, for example the payout percentage might be ninety per cent, which means the slot machine game will payout ninety per cent of all the bets played, and the casino only gets to keep 10 per cent.
This is not to say that each and every time you bet ten credits you will receive 9 in return – where’s the fun … fascination in that? Instead, the casino slot machine just won’t pay out for a bit, and then suddenly jump on a hot streak and you might draw the big grand prize.
The profit %s most likely will vary between the alternate games and just a few of the very famous casinos, for example Golden Online Casino, which hands out a pay out rate of up to 95 %!
Therefore, in essence, the one-armed bandit takes all the money played into it and pays it out to some lucky winners. The casino only gets to keep a averagely low per cent of all the wagers allocated.
The casino slot software controls each and every part of the machine, from the flickering lights to the turning 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.