A casino is a place where people can play games of chance for money or other rewards. Some casinos are devoted to one game, such as poker or blackjack, while others offer a mix of different games. A casino may also provide a range of other services to its patrons, such as restaurants and free drinks.

There have been many types of gambling establishments throughout history. Some, like the famous Monte Carlo casino in Monaco, have become well known worldwide. More recently, American Indian reservations have opened casinos, which are not subject to state anti-gambling statutes. Casinos can be found in many places, including Atlantic City in New Jersey and Las Vegas in Nevada.

Modern casinos use a variety of technological measures to monitor their patrons and prevent cheating. Chips with microcircuitry interact with electronic systems on tables to allow casinos to see exactly what is wagered minute by minute; roulette wheels are monitored electronically to discover any statistical deviation from their expected results; and slot machines have built-in computer chips that randomly determine payouts.

In addition to technology, some casinos use rules and regulations to ensure that their patrons are safe. Most states require a casino to display signs warning of the dangers of gambling and to provide contact details for responsible gambling organizations that can help with problem gambling. Some states even include statutory funding for responsible gambling as part of the licensing conditions for casinos. Some of these organizations also provide specialized support for individuals with a gambling addiction.