A casino, also known as a gambling hall, is a facility for playing games of chance and sometimes skill. Most casinos offer a wide variety of gambling opportunities, but some are more specialized than others. Some casinos concentrate on table games, such as blackjack and baccarat, which are conducted by live dealers; others offer more mechanical machines like slots; while still others focus on video poker and other game types in which players compete against each other rather than the house.

In the United States, there are more than 1,000 casinos. The Las Vegas valley has the largest concentration of casinos, while New Jersey and Chicago each have a significant number. Casinos are usually licensed and regulated by the state in which they are located.

Most casino games have a predictable long-term advantage for the house, which is called the house edge. However, some games have a skill element that can eliminate the house edge or even make it positive for the player. These are called advantage games. The house gains money on advantage games by taking a percentage of the bets, which is known as the vig or rake.

In general, the typical casino gambler is a female of middle age, with an above-average income. According to a 2005 study by Harrah’s Entertainment, the most common casino game is slot machine play, followed by craps and roulette. Craps is popular with high rollers, who typically place large bets and thus can offset the house’s 1.4 percent or less advantage.