A casino is a facility that provides gambling services. Casino games include a wide variety of games, from table games like blackjack and roulette to slot machines, video poker, and more. The games are usually supervised by one or more casino employees. Many casinos are operated by large companies, while others are owned by individuals or groups of people, such as Native American tribes.

Casinos make billions of dollars each year, providing income for investors, corporations, and the owners themselves. They also generate revenue for state and local governments, as well as the communities in which they are located. In addition to a variety of gaming tables, many casinos feature restaurants and bars. Some even offer live entertainment.

Many casinos use bright, often gaudy colors to stimulate players and create a cheering atmosphere. Red, for example, is a popular color because it is thought to encourage patrons to gamble. Casino walls are often adorned with photographs and memorabilia.

The casino gambling industry is a major source of employment worldwide. In the United States, it is the second largest employer after retail and wholesale trade. Casinos hire a great deal of people, including managers, dealers, and security personnel. Some casinos employ elaborate security systems, such as cameras in the ceiling that can be adjusted to focus on particular suspicious patrons. In some cases, these cameras are connected to a monitoring room filled with banks of security monitors, which can quickly discover any statistical deviations from expected results.