A casino is an establishment for gambling. Most casinos offer a wide variety of games such as blackjack, craps, roulette, baccarat and poker. Some also have restaurants and bars. In the United States, casinos are licensed by state governments. They are regulated by the Gaming Control Act. In addition to providing a variety of gambling opportunities, casinos often provide entertainment such as live performances by singers and actors.
Traditionally, casinos were located in cities such as Las Vegas and Atlantic City where they capitalized on the number of tourists that visited these entertainment centers. In recent years, however, many large casino operators have expanded their operations to suburban areas and even rural areas.
Most casinos have strict rules regarding the maximum amount of money that a patron can win. These limits are designed to prevent a single player from winning more than the casino can afford to lose. In addition, all casino games have mathematically determined odds that ensure that the house will always make a profit (or at least break even) on its bets. This profit margin is commonly known as the house edge.
Because of this, casinos are able to give out free goods and services such as hotel rooms, meals, shows and limo service to big gamblers who spend the most time on their favorite machines. This practice is called comping. The exact rules of comping vary by casino, but most have a system for rating players based on the amount of time they play and the size of their bets.