Modern casino slot machines are controlled by a computer, and the win %s are pre-programmed into the computer software.
Casino slot machine games have RNGs which are endlessly generating combos, even when the slot machine is not currently being played.
Running simultaneously with the RNG of the casino slot machine is the pay out rate %.
The pay out percent controls how much the slot machine game will pay, for e.g. the payout per cent may be 90%, which means the slot machine will pay 90% of all the bets played, and the casino will then get to keep 10 per cent.
This does not imply that each and every time you bet ten credits you will receive 9 in return – where’s the fun … excitement in that? Instead, the casino slot machine just won’t payout for a little while, and then suddenly jump on a hot streak and you might hit a big pot prize.
The payoff percentages will very likely vary between the various games and a handful of the extremely established casinos, like Golden Online Casino, which offers a payout rate of up to ninety five per cent!
As a result, in essence, the one-armed bandit takes all the dough played into it and pays it out to a number of privileged winners. The casino only gets to keep a relatively indistinct percentage of all the odds put out.
The casino one armed bandit software controls any 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 set up by the RNG which corresponds to the pictures on the reel.