A casino is a gambling establishment that offers games of chance. Casinos can be found around the world and are generally large complexes that host many different types of gaming activities. Some casinos focus primarily on poker or other card games while others have a large variety of table games and are operated by live dealers. Some casinos also feature a hotel and restaurant.
The precise origin of gambling is unknown, but it has been a part of human culture for millennia in various forms. The earliest evidence of a game of chance dates back to 2300 BC in China, with dice appearing shortly afterwards and playing cards showing up about 500 AD. The first modern casino opened in Monte Carlo in 1863 and is still a major source of income for the principality of Monaco.
Casinos are regulated by government agencies in most countries. There are some exceptions, such as American Indian reservations which are exempt from state antigambling laws. Casinos use a variety of security measures to prevent cheating by patrons and employees, either in collusion or independently. Most casinos have security cameras throughout the building and monitor all transactions.
There are three general categories of casino games: gaming machines, table games, and random number games. Gaming machines, such as slot machines, generate the most revenue for a casino. Table games, such as blackjack and craps, involve players competing against the house (casino) and are conducted by live croupiers. Random number games, such as roulette and video poker, are based on the selection of random numbers.