A casino is an establishment for certain types of gambling. Most casinos feature games of chance or skill, with the house always having a mathematical advantage over players. This is known as the house edge or vigorish, and it is the primary way that casinos make money. Some casinos also offer table games, such as blackjack or roulette. These games typically involve one player at a time and are conducted by employees of the casino called croupiers.

Some casino games have a significant element of skill, and players who possess the necessary skills can eliminate the inherent long-term disadvantage of those games (known as the house edge) and potentially win large sums of money. These skilled players are known as advantage players. Casinos employ a team of mathematicians to design and implement mathematically optimal strategies for their casino games, as well as to calculate the expected value and variance of those games. These mathematicians are referred to as gaming mathematicians or analysts.

Casinos are a major source of revenue for some governments and are regulated in many jurisdictions. Some of them are built in conjunction with hotels, restaurants, retail shops and other tourist attractions. Others are standalone gambling facilities. In the United States, there are over 40 state-licensed casinos.

The most famous casino is located in Monte Carlo, Monaco. It has been featured in numerous films and novels, including the 2005 book “Busting Vegas” by Ben Mezrich, which recounts the story of MIT students who beat the house in various casino games.