Modern casino slot machines are controlled by computer software, and the win %s are pre-programmed into the software.
Casino slot machines have Random Number Generators that are continuously generating combinations, even when the slot machine game is not currently being played.
Running collectively with the Random Number Generator of the casino slot machine is the pay out rate per cent.
The pay out per cent controls how much the slot machine will pay out, for example the pay out percent may be 90%, which means the slot machine game will pay out ninety percent of all the bets played, … the casino gets to keep 10 percent.
This is not to say that each time you bet ten credits you will receive nine in return – where is the fun … exhilaration in that? Instead, the casino slot machine just will not pay out for a little while, and then suddenly hit a hot streak and you might catch the big grand prize.
The pay off %s most likely will vary between the various games and several of the extremely popular casinos, such as Golden Online Casino, which gives a payout of up to ninety-five percent!
As a result, in essence, the one-armed bandit takes all the money played into it and pays it out to some privileged winners. The casino only gets to keep a generally minute percentage of all the bets allocated.
The casino slot software controls every part of the machine, from the flickering lights to the revolving of the reels.
When you hit spin on the slot machine, a combination is set up by the RNG which corresponds to the pictures on the reel.