A casino is a public place where people play games of chance. Some casinos have hotels and restaurants, while others have shopping malls. Casinos are different from lotteries in that they are supervised by security personnel.

Slot machines, which are designed to appeal to touch and sight, are played in casinos. They have whistles and bells to alert players, and they are arranged in a maze-like fashion.

A typical casino offers free drinks and meals for its patrons. They also give away comps. Comps are discounts on hotel rooms, meals, or shows, and are often given to customers who spend a certain amount of money. The rewards vary depending on the casino.

Players who make large bets on certain games are called high rollers. These people get lavish attention and are treated with luxury suites and personalized service.

Many casinos now use video surveillance systems to keep an eye on their games. A system known as chip tracking allows the casino to watch wagers minute by minute.

Casinos also offer reduced-fare transportation to big bettors. Casinos have developed elaborate surveillance and security systems that allow employees to watch every table, every doorway, and even every window.

Casinos use computers to track their games, including the odds. This information helps the casino determine their house advantage.

Many casinos have a computer program that records the results of each game and tallys up points. Each point can be exchanged for a discount or free slot play.