Modern casino slot machine games are controlled by computer software, and the winning percentages are preprogrammed into the game software.

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

Running collectively with the Random Number Generator of the casino slot machine is the pay out percentage.

The payout percentage controls how much the slot machine will pay, for e.g. the payout per cent could be ninety percent, which means the slot game will pay out ninety percent of all the wagers played, and the casino gets to keep 10 percent.

This really does not mean that every time you bet 10 credits you will receive nine in return – where’s the fun … thrill in that? Instead, the casino one arm bandit just won’t payout for a while, and then suddenly hit a hot streak and you might draw the big top prize.

The pay out %s will tend to vary between the different games and a handful of the extremely established casinos, for instance Golden Online Casino, which gives a cash payment of up to 95 per cent!

So, in essence, the slot machine game takes all the funds played into it and pays it out to several fortunate winners. The casino only gets to keep a basically small % of all the gambles placed.

The casino one armed bandit software controls every single part of the machine, from the flickering lights to the turning of the reels.

When you hit spin on the slot machine game, a combination is generated by the RNG which associates with the pictures on the reel.