A casino, also known as a gambling house or a gaming establishment, is a place where people can gamble by playing games of chance or skill. Some casinos offer a mix of both types of games, while others specialize in one or the other. In the United States, casinos are licensed and regulated by state governments. The industry is estimated to be worth billions of dollars and employs thousands of people. The success of casinos contributes significantly to the economy of the cities and states where they operate.
Casinos are designed to attract and keep customers through a variety of means, including stimulating atmospheres, enticing game rules, and offering perks that reward patronage. These rewards, often referred to as comps or complimentary items, can include food, drink, hotel stays, and even show tickets. During the 1970s, Las Vegas casinos became famous for their discounted travel packages and free buffets, as they sought to fill hotels and gambling venues with as many customers as possible.
In most games of chance, the casino has a long-term advantage over the players, which is expressed mathematically as the house edge. In games that have a skill element, the player can reduce the house edge through practice and knowledge. In games that involve a dealer, the house earns money through a commission called the vig or rake.
The most popular casino games are slots and table games. Slots are designed to appeal to the senses of sight and sound, with flashing lights, bells, whistles, and music. Table games are more social and require more strategy, such as blackjack and baccarat. The popularity of these games has led to an increase in their availability online, as well as at physical casinos.