A casino, also known as a gambling hall or gaming room, is an entertainment center based on games of chance. Gambling in some form has been part of human culture throughout history. Some early examples include dice games and archery, but the modern casino has become synonymous with Las Vegas.

Casinos are a source of both recreation and revenue for many states. They typically offer a variety of table and slot games, as well as other popular activities such as bingo, keno, and sports wagering. In addition, they may serve as meeting places for social groups, and offer dining options. Some casinos are very large and luxurious, while others are small and intimate.

Security is a key component of casino operations. Dealers and other employees are trained to spot blatant cheating, such as marking cards or stealing chips. More subtle indicators of fraud or collusion are observed by pit bosses and other managers, who keep tabs on a table’s winnings or losses; they are also aware of betting patterns that may signal a dishonest patron. In some casinos, high-tech surveillance systems provide an “eye in the sky,” enabling casino workers to monitor tables and machines from a control room filled with banks of monitors.

Most casinos are geared toward attracting high rollers, who make much larger bets and spend more money on average than other patrons. As a result, they often receive comps (free luxury rooms and other amenities) worth thousands of dollars. In addition, high rollers are often allowed to gamble in private rooms away from the main floor.