A casino is a place where people can play gambling games. Most casinos are located in cities with good tourism potential, such as Las Vegas and Chicago. However, a small number are located in places with little tourist appeal, such as Reno, Nevada.

The casino industry is heavily regulated by government. Casinos must obtain licenses to operate and are subject to regular inspection. Many states also regulate the types of games that may be offered. In the United States, 40 states have some form of legalized gambling. Most states limit the type of game available and the maximum amount that can be won.

Casinos spend a great deal of time and money on security. Staff members are trained to spot cheating by patrons, and they use surveillance cameras constantly. In addition, a high percentage of modern slot machines are wired to a central computer system that can quickly discover statistical deviations from expected results. Casinos also employ electronic systems to monitor table games. For example, roulette wheels have built-in microcircuitry that allows casinos to oversee the exact amounts wagered minute by minute.

High rollers (gamblers who wager large sums of money) are an important source of revenue for casinos. These gamblers receive lavish inducements such as free or discounted transportation, meals, rooms and other services. In 2005, a survey by Harrah’s Entertainment found that the typical casino gambler was a forty-six-year-old female from a household with above-average income. Less expensive comps are given to other gamblers, who may receive coupons for free slots or discounted food, drinks or shows.