Modern casino slot machines are controlled by a computer, and the winning percentages are pre-programmed into the software.
Casino slot games have Random Number Generators which are continually generating combinations, even when the machine is not being played.
Running synchronously with the RNG of the casino one-armed bandit is the pay out percent.
The payout percentage controls how much the slot machine game will payout, for e.g. the payout per cent could be ninety per cent, which means the one arm bandit will pay ninety per cent of all the bets played, and the casino gets to keep ten per cent.
This is not to say that every time you bet 10 credits you will receive nine in return – where’s the fun and excitement in that? Instead, the casino slot will not pay out for a bit, and then suddenly go on a hot streak and you might hit a big pot prize.
The pay out percentages shall vary between the assorted games and a couple of the extremely common casinos, for e.g Golden Online Casino, which hands out a pay out of up to ninety-five percent!
Thus, in essence, the slot machine game takes all the funds played into it and pays it out to a number of lucky winners. The casino only gets to keep a considerably small percent of all the odds put out.
The casino slot software controls each part of the machine, from the blinking lights to the rolling of the reels.
When you hit spin on the slot machine game, a combination is developed by the RNG which relates to the pictures on the reel.