Modern casino slot machines are controlled by computer software, and the win %s are pre-programmed into the gaming software.
Casino slot games have Random # Generators that are ceaselessly generating combinations, even when the game is not currently being played.
Running simultaneously with the RNG of the casino slot machine game is the pay out per cent.
The payout percent controls just how much the one-armed bandit will pay out, for example the pay % could be ninety per cent, meaning the slot machine game will payout 90% of all the wagers played, … the casino gets to keep 10%.
This is not to say that each time you bet 10 credits you will receive 9 in return – where is the fun … excitement in that? Instead, the casino slot machine game just won’t pay out for a bit, and then suddenly start up a hot streak and you might draw the big grand prize.
The profit percentages usually will vary between the different games and just a few of the extremely famous casinos, e.g. Golden Online Casino, which tenders a payout rate of up to 95 percent!
Hence, in essence, the slot machine game takes all the currency played into it and pays it out to a handful of fortunate winners. The casino only gets to keep a generally low percent of all the plays allocated.
The casino slot software controls each part of the machine, from the dazzling lights to the rolling of the reels.
When you hit spin on the one-armed bandit, a combination is developed by the RNG which associates with the pictures on the reel.