What Is a Slot?


A slot is a narrow opening in a machine or container that you put coins into to make it work. They also refer to the sites within a computer where you can insert printed circuit boards that expand its capabilities.

Progressive Jackpots

A progressive jackpot is a large sum of money that grows and can be won by playing certain slots. It is usually a combination of several machines that work together to increase the jackpot.


The pay table is a list of symbols, pay lines and matching bonuses that appear on a slot. It is very important to study this before you start playing to maximize your chances of winning.

Return to Player Percentage (RTP)

A return to player percentage is a measure of the slot’s ability to pay out the amount you win. It can be used to compare slot machines and choose the best one for you.

Slot Testing

Before you play a slot, it is advisable to play a trial run of the game to get familiar with it and its rules. This can be done by using a free slot machine at your local casino or online.


A tilt is a technical fault that can affect the operation of an electromechanical slot machine. This can be caused by a malfunction of the machine’s door switch or reel motor.

Bonus Rounds

A bonus round is a feature that can be triggered in a slot game to give you additional chances to win. These features vary from game to game, so you will need to read the pay table carefully and understand how they work before you place a bet.