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How Do Slot Machines Work?


A slot machine’s random number generator (RNG) determines the sequence of numbers that appear on the reels. The computer records these numbers and divides them by a standard number to obtain the final quotient. The computer executes this process automatically. It then uses an internal sequence table to map each three-number sequence to the appropriate stop on the slot’s reel.

Bonus features

The bonus features of slot machines are mini-games that activate when a specific combination of symbols appears on the payline. They are usually aligned with the theme of the slot and increase a player’s chances of winning. These features can range from additional free spins and multipliers to an unlimited progressive multiplier. The main advantage of bonus features is that they allow players to win extra cash, which can boost their bankroll.


Slot symbols can come in different shapes and sizes. The most common of these are the symbols that appear on the reels and are also known as low value symbols. These are typically playing card icons from 10 to Ace that serve as the lowest paying symbols. Occasionally, slot developers choose these symbols in a way that reflects the theme of the game.

Symbol placement on reels

Symbol placement on the reels of slot games can be important to the outcome of the game. In some games, a single symbol can pay 100 times the stake, while others don’t pay at all. The placement of symbols on the reels of a slot machine varies from game to game, but they all have certain common characteristics.

Payout percentage

The payout percentage of slot machines varies. It can be as high as 98 percent and as low as 82%. It varies depending on the machine’s popularity and customer activity.

Bonus events

Slot bonus events are triggered by specific symbols appearing on a payline. They offer free credits or prizes, and can boost your winnings. However, they can be difficult to trigger. A few tips can help you increase your chances of triggering slot bonus events.