What Is a Slot Machine?

A slot, or slot machine, is a gambling machine that pays out winnings according to the results of spinning the reels. While the reels used to be controlled by revolving mechanical wheels, modern machines use a computer system that determines the outcome of each spin.

Payout percentage

The payback percentage of a slot game is the amount that the casino pays out to a player for each dollar wagered on the machine. A higher payout percentage means that the casino makes more money for each dollar played.

Bet size and number of pay lines

The amount that a player can wager on each line is what primarily affects the slot’s payout percentage. The higher the bet, the lower the payout percentage, but this also means that there is more risk involved in a single play.

Paytable and jackpot amounts

A pay table area displays the jackpot amounts and some of the rules for a specific game theme on a slot machine, and can be displayed permanently or through an interactive series of images available by touchscreen. Often the Pay Table is abbreviated and may display only the highest jackpots, due to space constraints.

Bonus features and symbols

A bonus feature or symbol on a video slot can add to the maximum win amount, increase the chances of winning, and improve the odds of hitting the jackpot. These bonus symbols can be stacked or appear in other ways, and they will often trigger bonus rounds.