A casino is a gambling establishment that offers a variety of games of chance and is operated by a person or company licensed to do so. It is also known as a gaming hall or clubhouse. A casino is most often located in a resort or hotel and features games such as slot machines, blackjack, poker, craps, roulette, and baccarat. It is a form of legalized gambling and a major source of revenue in many states.

In modern casinos, patrons are enticed by a combination of visual and audio stimuli. The bright lights and clang of coins dangling from slots attract the eye, while the sound of bells and whistles are designed to titillate the ears. Casinos also employ technological tools to keep out cheats and scammers. For example, some betting chips have built-in microcircuitry that interacts with an electronic system at the table to enable casinos to monitor the exact amounts wagered minute by minute and to alert them quickly to any statistical deviation from expected results. Similarly, roulette wheels are electronically monitored regularly to discover any anomalies.

While the glamour of a casino may draw in many patrons, it is not without its darker side. For one, the high levels of impulsive and compulsive behavior that can be seen in some casino visitors may actually undermine any economic benefits they might provide to local businesses. Indeed, studies show that casinos have a net negative effect on a community by drawing away local spending and contributing to crime, addiction, and lost productivity among gamblers.