How Slots Work


A slot is a thin opening or groove in something, such as a keyway in a piece of machinery. A slot can also be a slit for a coin in a vending machine.

How Slots Work

Most slots use a random number generator (RNG) to create a random outcome every time you spin the reels. This ensures that every spin is independent of the previous one.

The RNG also takes into account other factors such as the number of symbols on each reel and the number of paylines available. This means that there are a wide variety of different combinations you can win with each spin.


A common way to win in slot games is by matching three or more identical symbols on a payline. There are many different kinds of symbols that can appear on a slot, including fruit symbols, bars, and classic icons.


A slot’s paylines determine the payout, winning combination and potential jackpot of a game. The most basic slot with just 3 reels has a single payline, but more modern video slots may have multiple lines.

Lines can be horizontal, vertical, diagonal and zig-zag. These ways to win are important because they can lead to big wins, especially if the line is stacked with symbols.

Bonus Events

Pick’em-style bonus events are a common type of bonus in slots. You pick a symbol to reveal a bonus award. The programmer knows that you’ll get each award about a third of the time, so over a long time they will average 50 credits.