Modern casino slot machine games are controlled by computer software, and the winning percentages are preprogrammed into the game software.
Casino slot games have RNGs which are endlessly generating combos, even when the machine is not currently being played.
Running concurrently with the Random Number Generator of the casino slot machine game is the payout rate %.
The pay out percent controls how much the one-armed bandit will pay, for e.g. the pay percentage may be ninety percent, meaning the slot machine game will pay 90% of all the bets played, … the casino will then get to keep 10 per cent.
This does not mean that each time you bet ten credits you will receive nine in return – where’s the fun and thrill in that? Instead, the casino slot machine game won’t pay out for a little while, and then suddenly start up a hot streak and you might draw the big top prize.
The profit percentages will most likely vary between the differing games and a handful of the very famous casinos, for e.g Golden Online Casino, which tenders a payout rate of up to ninety five per cent!
So, in essence, the one-armed bandit takes all the funds played into it and pays it out to a number of privileged winners. The casino only gets to keep a relatively indistinct percent of all the bets allotted.
The casino slot software controls every single part of the machine, from the dazzling lights to the spinning of the reels.
When you hit spin on the one-armed bandit, a combination is put together by the RNG which associates with the pictures on the reel.