Modern casino slot games are controlled by computer chips and software, and the winning %s are preprogrammed into the gaming software.
Casino slot games have Random Number Generators which are eternally generating combinations, even when the slot machine is not active.
Running in unison with the RNG of the casino slot machine is the payout rate per cent.
The pay out percent controls how much the slot machine will pay out, for example the pay percentage could be 90%, meaning the one arm bandit will pay out 90% of all the wagers played, … the casino gets to keep 10%.
This doesn’t mean that every time you bet ten credits you will receive 9 in return – where is the fun … fascination in that? Instead, the casino one arm bandit just will not pay out for a while, and then suddenly start up a hot streak and you might draw the big jackpot.
The payout %s most likely will vary between the assorted games and a few of the highly acclaimed casinos, e.g. Golden Online Casino, which puts forth a pay out rate of up to 95 per cent!
As a result, in essence, the slot machine takes all the cash played into it and pays it out to a couple of fortunate winners. The casino only gets to keep a fairly indistinct percentage of all the plays made.
The casino slot software controls every part of the machine, from the flashing lights to the rolling of the reels.
When you hit spin on the one-armed bandit, a combination is put together by the RNG which corresponds to the pictures on the reel.