A casino (plural casinos) is a large building or room where gambling games like slot machines, poker, craps, baccarat and roulette are played. Some casinos specialize in one or more of these games; others offer a full range of gambling options. In the United States, casino gambling is legal in some 40 states. The majority of casino profits are generated by slot machines.

Modern casinos are more like indoor amusement parks than places of pure chance, but the primary draw is still gambling. Musical shows, lighted fountains, shopping centers and themed hotels may lure guests in, but the billions of dollars in profit that casinos make each year come from the games of chance. Slot machines, blackjack, baccarat, craps and roulette account for the vast majority of the money lost or won at casinos.

Gambling games are regulated by state gaming control boards or commissions, which create rules and regulations for gambling operators. In addition, each casino is subject to local laws that prohibit the operation of unlicensed gambling establishments.

Casinos are a popular tourist destination, and some offer special incentives to visitors. For example, many of the best casinos reward their loyal patrons with free hotel rooms, meals and tickets to shows. Some also provide limo service and airline tickets to their biggest spenders. Ask a casino employee about comps and how to get one. They will often be happy to share their insider information, especially if you are a big spender.