Modern casino one armed bandits are controlled by computer software, and the winning percentages are pre-programmed into the software.
Casino slot machines have Random # Generators which are continuously generating combinations, even when the machine is not active.
Running side by side with the RNG of the casino one-armed bandit is the pay out rate percentage.
The pay out percentage controls how much the slot machine game will payout, for example the payout per cent could be ninety per cent, which means the slot game will payout ninety percent of all the bets played, and the casino gets to keep 10 per cent.
This really does not mean that each and every time you bet ten credits you will receive nine in return – where is the fun … thrill in that? Instead, the casino slot just won’t payout for a little while, and then suddenly fire up a hot streak and you might draw the big grand prize.
The payout percentages will very likely vary between the assorted games and a few of the most favored casinos, for e.g Golden Online Casino, which gives a cash payment of up to 95 %!
This means that, in essence, the one-armed bandit takes all the $$$$$ played into it and pays it out to a couple of chosen winners. The casino only gets to keep a relatively indistinct % of all the bets allocated.
The casino slot machine software controls each part of the machine, from the flickering lights to the revolving of the reels.
When you hit spin on the slot machine game, a combination is formed by the RNG which connects with the pictures on the reel.