A casino (or ksino) is an establishment offering various types of gambling. Casinos are often combined with hotels, resorts, restaurants, retail shops, and other tourist attractions. In the United States, casinos are regulated by state and local government authorities. Players must be at least 21 to gamble in a casino.

Gambling is often accompanied by drinking. Casinos have bars or lounges where people can enjoy drinks while they play games like roulette, craps, poker, and blackjack. Some of these bars are open to the public while others are private. Regardless of where they are located, casino bars offer a range of different drinks from alcoholic beverages to soft drinks.

Casinos have a high level of security. The security staff keeps an eye on patrons to make sure they are not cheating or stealing. They also keep an eye on the tables to ensure that no one is changing their bets or marking cards. Casinos also have cameras in the ceiling that can watch every table, window, and doorway. These cameras can be adjusted to focus on suspicious patrons.

A casino can also make money by charging a commission for services like arranging bets, providing free drinks, or giving complimentary items to gamblers. This commission is called the vig or rake. Casinos also make money by offering different payout percentages for their slot machines and video poker. This allows them to maximize profits while minimizing the amount of money they give away to players.