Slot machines, also known as one-armed bandits or fruit machines, are coin-operated gaming devices that have become popular worldwide. They consist of a spinning reel with symbols that match those on traditional card games such as poker and blackjack. When the player inserts money into the machine, they can pull a lever to activate the spinning mechanism, which then stops randomly at one of several possible outcomes. If the outcome matches any of the player's bets, they win a predetermined amount of money based on their wager. Slot machines are typically found in casinos and other gaming establishments, but can also be played online or as part of larger gambling networks.