Modern casino slot machine games are controlled by computer software, and the winning percentages are pre-programmed into the game software.
Casino one armed bandits have RNGs which are continually generating combinations, even when the slot machine game is not active.
Running simultaneously with the RNG of the casino slot machine game is the payout %.
The payout percentage controls how much the slot machine will pay, for e.g. the pay out % might be ninety percent, meaning the slot game will pay out 90% of all the stakes played, and the casino gets to keep 10 per cent.
This is not to say that each time you bet ten credits you will receive nine in return – where’s the fun and fascination in that? Instead, the casino slot won’t payout for a while, and then suddenly fire up a hot streak and you might catch the big grand prize.
The payout %s will most likely vary between the differing games and a few of the highly established casinos, for e.g Golden Online Casino, which hands out a pay out of up to ninety-five percentage!
Thus, in essence, the slot machine game takes all the dough played into it and pays it out to a number of privileged winners. The casino only gets to keep a considerably tiny percentage of all the gambles put out.
The casino slot software controls each 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 produced by the RNG which associates with the pictures on the reel.