A casino, also known as a gaming house or simply a gambling establishment, is a building or room where people can play various games of chance for money. Casino games include slot machines, blackjack, roulette, craps, baccarat, and more. Successful casinos bring in billions of dollars each year for the companies, investors, and Native American tribes that operate them. In addition, they generate taxes and other revenues for the states where they are located.

Although gambling probably predates recorded history, the modern casino developed in the 16th century during a period when gambling was popular throughout Europe. Its name derives from the Italian word ridotto, which was a private clubhouse where wealthy aristocrats would gather for social events. Although gambling was technically illegal, it was not often enforced, and the casinos were able to thrive.

The modern casino is much like an indoor amusement park for adults, but the vast majority of its profits come from gambling. Musical shows, shopping centers and lavish hotels help lure in the customers, but the business would not exist without the games of chance. The most popular casino games are slots, video poker, blackjack and roulette. In addition, some casinos feature Far Eastern games such as sic bo, fan-tan and pai gow. High-volume players are rewarded with comps (free goods and services) such as free hotel rooms, meals and show tickets. A few casinos even give away airline tickets and limo service to their biggest spenders.