Modern casino slot machine games are controlled by computer chips and software, and the win %s are preprogrammed into the software.
Casino slot machine games have Random Number Generators that are endlessly generating combos, even when the slot machine is not currently being played.
Running in unison with the RNG of the casino slot machine is the pay out %.
The pay out percentage controls just how much the slot machine will payout, for e.g. the pay per cent may be 90%, meaning the slot machine game will pay ninety percent of all the bets played, and the casino will then get to keep ten per cent.
This really does not mean that each and every time you bet ten credits you will receive nine in return – where is the fun and thrill in that? Instead, the casino one arm bandit just will not payout for a little while, and then suddenly hit a hot streak and you might draw the big top prize.
The payout %s usually will vary between the assorted games and a few of the extremely acclaimed casinos, for example Golden Online Casino, which gives a payout of up to ninety five per cent!
This means that, in essence, the slot machine game takes all the money played into it and pays it out to a number of privileged winners. The casino only gets to keep a averagely minute per cent of all the gambles placed.
The casino slot software controls every single 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 set up by the RNG which corresponds to the pictures on the reel.