Casino is a gambling establishment that offers a wide variety of games. It may be located in a hotel, or it may stand on its own. It may feature table games, slot machines, and other gambling products. Casinos may also offer non-gambling entertainment such as shows and restaurants. Some casinos are owned and operated by organized crime figures, or they may be independent businesses.

Gambling is a popular pastime that has been around since primitive times, with evidence of dice-throwing and other game play being found in archaeological sites. Modern casino games, however, developed only in the 20th century. Casinos first appeared in Nevada, and then spread rapidly to other states that legalized the business. Casinos are also available on American Indian reservations, which are not subject to state anti-gambling laws.

Most casino games rely on chance, with a small percentage of games involving some degree of skill. The house always has a mathematical advantage over gamblers in most games, and this advantage is known as the house edge. Some games, such as blackjack and roulette, have fixed odds that are determined by math. Others, such as craps and poker, involve a combination of luck and skill.

Casinos make their money by charging a fee to players who win or lose. They also profit from a system of comps, which gives gamblers free or discounted drinks, food, or room service. They are designed to attract customers and entice them to gamble, with bright lights, stimulating colors, and loud noises.