Modern casino one armed bandits are controlled by computer software, and the winning percentages are pre-programmed into the computer software.
Casino slot machine games have RNGs that are endlessly generating combinations, even when the machine is not being played.
Running concurrently with the random # generator of the casino slot machine is the payout percentage.
The payout per cent controls how much the slot machine will payout, for eg the pay percentage might be ninety per cent, meaning the one arm bandit will pay out 90% of all the bets played, … the casino simply gets to keep 10%.
This really does not mean that each time you bet ten credits you will receive 9 in return – where is the fun and fascination in that? Instead, the casino slot will not payout for a little while, and then suddenly fire up a hot streak and you might hit a big jackpot.
The profit percentages will definitely vary between the differing games and just a few of the highly acclaimed casinos, for e.g Golden Online Casino, which puts forth a pay out of up to 95 per cent!
So, in essence, the one-armed bandit takes all the money played into it and pays it out to a number of fortunate winners. The casino only gets to keep a generally tiny percentage of all the wagers placed.
The casino one armed bandit software controls each and every part of the machine, from the flashing lights to the turning of the reels.
When you hit spin on the slot machine game, a combination is developed by the RNG which relates to the pictures on the reel.