A casino is a place where people gamble. It may have some elements of skill, such as in poker or blackjack, but its primary attraction is chance. The house always wins. That is why casinos must offer high payouts to attract players. A casino also earns money by charging a commission on bets, called the vig or rake. It may also give out complimentary items or comps to gamblers, such as food and drink.

In the past, many American casinos were controlled by organized crime groups. But as real estate investors and hotel chains realized the potential profits, they bought out the mobs and became major casino operators. Today, federal laws and the threat of losing a gambling license at the slightest hint of mob involvement keep these criminal enterprises away from their cash cows.

Modern casinos are designed to appeal to the senses. The lights are bright and the noises of clanging coins, bells and whistles are constant. Slot machines and tables are arranged in a maze-like fashion so that wandering patrons will be constantly enticed by more gambling opportunities.

In the United States, most casinos feature slot machines and table games such as roulette, baccarat, keno, craps and blackjack. Some also feature Asian-themed games like sic bo and fan-tan, as well as pai gow poker, two-up, and banca francesa (known as chemin de fer in France, baccarat in Italy, and trente et quarante in French). Live dealers are available at some casinos for some table games, especially those that require social interaction.