How Slot Machines Work [A.K.A. How Random Number Generators (RNG) Work]By Christina Applebaum Have you ever been playing a slot machine at a land based casino when you decide to move on to a different game, only to see someone sit down after you and hit SO big on the machine you were just playing that it makes you physically ill? Sure, who hasn't right? Well it's happened to me. People tend to feel that if they had just kept playing, that big win would have been theirs, or that they had gotten the machine "ready to pay" with the time and money they spent playing it. Fortunately none of this is true, however most people don't know exactly how slot machines actually work, which leads to a lot of the common myths and misconceptions about a slot machines. The chances of you getting the identical win as the person after you if you had kept playing are for all intents and purposes, nonexistent. Let me tell you why... Slot machines have a microprocessor similar to the one in your home computer, but instead of running software programs like Excel or Photoshop it is running a RNG program, or Random Number Generator. The RNG is in perpetual motion, selecting different combinations of numbers every millisecond - even when the machine is not being played. The outcome of every spin is determined by these numbers which correspond to the various symbols on the game. And those numbers are determined from the second [or from the millisecond to be exact] that you hit "Spin". So you see? The chances that you would have hit "Spin" at the the exact millisecond that your successor did are approximately NONE.