What Is a Slot Machine?


A slot is a gambling machine that accepts cash or tokens. The player inserts the money into a designated slot, then presses a lever or button on the machine. Reels spin and stop to rearrange symbols, and winning combinations are paid out according to the paytable.

Slot machines have become more common since the 1990s, with traditional three-reel games having one to five paylines and video slot machines having 9, 15, 25, or 1024 different paylines. In most slots, payouts are based on a combination of symbols, but special symbols such as wilds and scatters can boost a player’s chances of winning.


Depending on the theme of the machine, symbols may be shaped like fruits, bells, and stylized lucky sevens. Some have card numbers from nine through ace and some feature wilds that substitute for most other symbols (except scatters or jackpot symbols).

Bonus mode

A bonus mode is a special game mode that can only be triggered on certain machines, typically ones with more than one payline. During the bonus mode, players can receive payouts continuously while they are entertained by a series of special scenes and music on an LCD display.

Weight count

A weight count is the total value of coins or tokens removed from a slot machine’s drop bucket or drop box for counting by the casino’s hard count team. A weight count is a form of gaming control, and it is the same process as slot machine random number generators, which generate random numbers to ensure that each game is fair.