Modern casino slot games are controlled by computer chips and software, and the win percentages are pre-programmed into the gaming software.

Casino Slots have RNGs which are continuously generating combinations, even when the slot machine is not currently being played.

Running simultaneously with the RNG of the casino slot machine game is the payout rate %.

The payout % controls just how much the slot machine game will pay out, for e.g. the pay out per cent might be ninety per cent, meaning the slot machine game will payout ninety percent of all the bets played, and the casino gets to keep 10%.

This is not to say that each and every time you bet 10 credits you will receive nine in return – where is the fun and excitement in that? Instead, the casino slot just won’t pay out for a bit, and then suddenly hit a hot streak and you might draw the big top prize.

The payoff percentages will definitely vary between the differing games and some of the extremely popular casinos, for instance Golden Online Casino, which puts forth a payout rate of up to 95 %!

As a result, in essence, the one-armed bandit takes all the dough played into it and pays it out to a number of lucky winners. The casino only gets to keep a fairly indistinct per cent of all the gambles put out.

The casino slot software controls each part of the machine, from the blinking lights to the revolving of the reels.

When you hit spin on the one-armed bandit, a combination is formed by the RNG which associates with the pictures on the reel.