Modern casino slot games are controlled by computer chips and software, and the win %s are pre-programmed into the computer software.
Casino Slots have RNGs that are ceaselessly generating combinations, even when the slot machine is not active.
Running in unison with the RNG of the casino slot machine is the pay out rate %.
The payout % controls just how much the one-armed bandit will pay, for example the payout percentage may be 90%, meaning the slot machine will payout 90% of all the bets played, … the casino will then get to keep 10 percent.
This does not mean that every time you bet ten credits you will receive 9 in return – where’s the fun … thrill in that? Instead, the casino slot machine just won’t payout for a little while, and then suddenly hit a hot streak and you might draw the big jackpot prize.
The payout %s will tend to vary between the different games and just a few of the very favored casinos, for example Golden Online Casino, which provides a payment of up to ninety-five percentage!
Hence, in essence, the one-armed bandit takes all the currency played into it and pays it out to a few lucky winners. The casino only gets to keep a fairly low percentage of all the plays allocated.
The casino slot software controls each and every part of the machine, from the flashing lights to the revolving of the reels.
When you hit spin on the slot machine game, a combination is generated by the RNG which is linked to the pictures on the reel.