A casino is a building or room in which various games of chance are played. These are often accompanied by food and drink, stage shows and other luxuries. Most states have laws regulating casinos, and some have special regulations for Native American gambling facilities. The most famous casino is probably Las Vegas, although Atlantic City casinos are also well-known. Other cities and countries have casinos, too, including the Empire at Leicester Square in London and the Venetian Macau on the Cotai Strip.

Security at casinos is a complex matter. In addition to surveillance cameras and other technological measures, the behavior of players is observed by casino employees. For example, dealers watch for blatant cheating (such as palming cards or marking dice). They also look for betting patterns that could indicate a player is gaining an edge. The casino’s gaming mathematicians (or ‘gaming analysts’) are also responsible for determining the house edges and variance of different games, which help the casino determine how much money it will make on each bet, and how large a bankroll is required to run the casino efficiently.

Some casinos are known for a particular game, such as baccarat in the United Kingdom or trente et quarante on the French Riviera. Other casinos are notable for their architecture or location. Still others are known for the variety of casino games they offer, or for their customer service, such as the ability to speak multiple languages. Many casinos also promote responsible gambling, offering programs and information to help problem gamblers.