Modern casino Slots are controlled by a computer, and the win %s are pre-programmed into the computer software.
Casino one armed bandits have Random # Generators that are constantly generating combos, even when the slot machine game is not active.
Running in unison with the RNG of the casino slot machine is the pay out %.
The payout percent controls just how much the one-armed bandit will pay, for eg the pay percent could be ninety per cent, meaning the slot game will pay ninety per cent of all the wagers played, … the casino gets to keep 10%.
This does not mean that each time you bet ten credits you will receive nine in return – where is the fun and fascination in that? Instead, the casino slot just will not pay out for a little while, and then suddenly fire up a hot streak and you might catch the big jackpot.
The pay out percentages will vary between the various games and just a few of the highly favored casinos, for example Golden Online Casino, which hands out a payment of up to ninety-five per cent!
This means that, in essence, the one-armed bandit takes all the $$$$$ played into it and pays it out to some privileged winners. The casino only gets to keep a considerably low % of all the gambles placed.
The casino slot software controls every single part of the machine, from the blinking lights to the spinning of the reels.
When you hit spin on the one-armed bandit, a combination is developed by the RNG which associates with the pictures on the reel.