Modern casino slot games are controlled by computer chips and software, and the win %s are pre-programmed into the game software.

Casino slot machines have Random Number Generators which are eternally generating combinations, even when the game is not currently being played.

Running in unison with the Random Number Generator of the casino slot machine is the pay out %.

The pay out per cent controls how much the one-armed bandit will pay out, for eg the pay percent could be ninety percent, meaning the slot game will pay out ninety per cent of all the stakes played, … the casino only gets to keep 10 per cent.

This really does not mean that each time you bet 10 credits you will receive nine in return – where’s the fun … exhilaration in that? Instead, the casino slot will not pay out for a bit, and then suddenly start up a hot streak and you might catch the big pot prize.

The payout percentages will most likely vary between the different games and some of the notably favored casinos, e.g. Golden Online Casino, which gives a payout rate of up to ninety five percent!

Hence, in essence, the slot machine takes all the currency played into it and pays it out to a number of fortunate winners. The casino only gets to keep a generally low percent of all the wagers allotted.

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

When you hit spin on the slot machine, a combination is put together by the RNG which relates to the pictures on the reel.