What is a Slot?


A narrow opening or groove in something, used for insertion.

A slot is the area on a reel in a slot machine that contains symbols. A player inserts cash or, in ticket-in, ticket-out machines, a paper ticket with a barcode into the slot to activate the machine. The reels then spin and stop at positions that match a payline, awarding credits according to the machine’s payout table. Most slot games have a theme, and the symbols and bonus features align with that theme. Players may also choose a game with a fixed number of paylines, or one that allows them to select the number of active lines. In either case, the computer randomizes the sequence of symbols and then finds a corresponding reel location, which it then causes to stop at those placements. The computer then evaluates each symbol to determine whether it was a winning spin or not.