Casino is a place where people can gamble and play games of chance. Casinos are a major source of income for the gambling industry and make profits from the money gamblers wager and the fees they pay to play. They offer perks to encourage gamblers to spend more money, such as free meals, drinks, hotel rooms, and show tickets. Casinos are most profitable when they have a large number of high-rollers, who can spend tens of thousands of dollars at one time. High rollers are given special treatment, including private gambling areas and a dedicated personal attendant.

In the twentieth century, casinos have become choosier about who they allow to play. Many have moved away from the idea of filling their facilities with as many people as possible and now focus on maximizing the amount of money each person gambles. This is done by concentrating on the highest-stakes gamblers. In Las Vegas, these are the “high rollers,” who often gamble in special rooms that are separate from the main casino floor. They receive comps (complimentaries) worth a lot of money, such as free luxury suites and lavish personal attention.

While casinos are known for their flashy lights and dazzling games of chance, they are also very sophisticated businesses. Security is a big concern. For example, video cameras in the ceiling give a casino a high-tech eye-in-the-sky view of every table and window. The video is supervised by security personnel in a room filled with banks of monitors and can quickly detect any statistical deviation from expected results.