Modern casino slot machines are controlled by computer software, and the win %s are pre-programmed into the computer software.
Casino slot machines have RNGs which are ceaselessly generating combinations, even when the machine is not being played.
Running in sync with the random # generator of the casino one-armed bandit is the pay out rate per cent.
The payout percentage controls just how much the slot machine will pay, for example the pay out per cent might be ninety per cent, which means the one arm bandit will pay out 90% of all the wagers played, and the casino simply gets to keep ten percent.
This really does not mean that each and every time you bet 10 credits you will receive nine in return – where is the fun and fascination in that? Instead, the casino slot will not payout for a little while, and then suddenly start up a hot streak and you might catch the big jackpot prize.
The pay off %s shall vary between the various games and a couple of the very acclaimed casinos, e.g. Golden Online Casino, which hands out a payment of up to ninety-five %!
Thus, in essence, the slot machine takes all the $$$$$ played into it and pays it out to a couple of fortunate winners. The casino only gets to keep a averagely petite percent of all the gambles placed.
The casino slot machine software controls any part of the machine, from the flashing lights to the rotating of the reels.
When you hit spin on the one-armed bandit, a combination is produced by the RNG which corresponds to the pictures on the reel.