Casino is a gambling establishment where gamblers place bets on a variety of games of chance. These games include a number of card and dice games, as well as sports wagering and video poker. Some casinos also offer non-gambling entertainment and restaurants. Many modern casinos have extensive technological systems that allow them to monitor patrons and the results of their play. These systems often detect and warn employees of suspicious activity. Casinos also employ mathematicians and computer programmers to calculate the expected return of various games. These specialists are referred to as gaming mathematicians and gaming analysts.

Casinos were once the preserve of organized crime syndicates. Mobster money flowed steadily into Reno and Las Vegas, but the gangsters were not satisfied with simply providing the cash. They became personally involved in running the casinos, took sole or partial ownership of them, and strove to influence the outcomes of individual games through the use of threats against casino personnel.

In the United States, casinos are licensed and regulated by state governments. In addition to ensuring that gambling is conducted fairly, these laws dictate the minimum age for admission to the casino floor, the maximum amount of money that can be deposited or won, and other matters of public policy.

The casino industry is a major source of revenue for some governments. In the United States, it contributes about $24 billion to the economy and supports nearly 400,000 jobs. Most people who play casino games are not professional gamblers, but instead are ordinary people who enjoy the excitement of risking money on chance. The typical casino gambler is a forty-six-year-old woman from a household with an above-average income. This demographic is consistent across the country and around the world.