Modern casino slot games are controlled by a computer, and the win %s are pre-programmed into the computer software.
Casino Slots have RNGs which are eternally generating combinations, even when the game is not currently being played.
Running concurrently with the random # generator of the casino slot machine is the payout rate %.
The payout % controls how much the slot machine game will payout, for e.g. the pay out % could be ninety per cent, which means the slot machine will pay ninety per cent of all the bets played, and the casino only gets to keep ten per cent.
This does not imply that for every time you bet 10 credits you will receive nine in return – where is the fun and fascination in that? Instead, the casino slot machine won’t pay out for a while, and then suddenly start up a hot streak and you might hit a big top prize.
The pay out %s will definitely vary between the various games and a handful of the highly popular casinos, like Golden Online Casino, which offers a payout rate of up to ninety-five percentage!
As a result, in essence, the slot machine game takes all the currency played into it and pays it out to a number of fortunate winners. The casino only gets to keep a considerably tiny percentage of all the stakes allocated.
The casino slot machine software controls every single part of the machine, from the flashing lights to the rotating of the reels.
When you hit spin on the one-armed bandit, a combination is generated by the RNG which connects with the pictures on the reel.