Modern casino one armed bandits are controlled by computer software, and the winning percentages are pre-programmed into the gaming software.
Casino slot machine games have Random # Generators which are ceaselessly generating combinations, even when the slot machine game is not active.
Running collectively with the random # generator of the casino slot machine is the pay out rate %.
The payout % controls just how much the slot machine game will payout, for eg the payout percentage might be 90%, which means the slot machine will pay out ninety percent of all the wagers played, … the casino gets to keep ten per cent.
This does not mean that for every time you bet 10 credits you will receive 9 in return – where’s the fun and excitement in that? Instead, the casino slot machine just won’t payout for a while, and then suddenly go on a hot streak and you might draw the big jackpot.
The pay out %s will most likely vary between the various games and a couple of the very popular casinos, for instance Golden Online Casino, which tenders a pay out rate of up to ninety-five percentage!
Thus, in essence, the one-armed bandit takes all the funds played into it and pays it out to a couple of lucky winners. The casino only gets to keep a relatively minute per cent of all the stakes allocated.
The casino slot software controls any part of the machine, from the blinking lights to the revolving 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.