What is a Slot?

A slot is a narrow depression, groove, notch or aperture, especially in the shape of an opening for receiving or admitting something. Depending on the context, slot can also be a synonym for machine.

A video slot is a type of online casino game that features spinning reels and various symbols. The goal of the game is to match symbols on pay lines to win credits.

The odds of winning are determined by a random number generator (RNG). All modern slots use RNGs, which cycle thousands of numbers every second.

How Slots Work

When a player hits “spin,” the slot’s computer program stops at a set of symbols that appears on the reels. These symbols are chosen by the RNG, and a winning combination is formed when all of the symbols line up on the winning payline.

Symbols on the reels vary, but are typically aligned with a particular theme or aesthetic. Common symbols include fruits, bells and stylized lucky sevens.

Bonus Rounds and Features

Slot games usually have a variety of bonus rounds, which are usually triggered randomly or at a specific time during the game. These can be free spins, wild multipliers or other special features.


Slot tournaments are a great way to test your skills against other players. Tournaments usually consist of a number of rounds of play that are ranked, and participants compete for the highest score possible per round. Countdown timers range from 3-minutes to 15-minutes, and the higher a player’s score, the more points they receive for that round.