Slot machines are among the most popular forms of gambling worldwide, but few players truly understand how they work. At the heart of every modern slot machine is a Random Number Generator (RNG). This microprocessor continuously generates thousands of number sequences per second, even when the machine isn’t being played. The moment a player presses the spin button, the RNG selects a number that corresponds to a specific combination of symbols on the reels.
The results appear instantaneously, giving the illusion that the outcome is determined by how or when the button is pressed—but it’s not. It's all down to algorithms and chance. Each symbol combination is assigned a payout value based on its rarity. This is known as the payout mechanic, and it’s how casinos maintain a statistical edge over time.
Payout percentages, or "return to player" (RTP) rates, are carefully designed to ensure profitability for the house. For instance, a game might offer an RTP of 95%, meaning that over time, it will pay out $95 for every $100 wagered.
While players may feel they're due for a win, the outcome of each spin is completely independent of the last—a key fact every gambler should remember.
