A casino is a gambling establishment where customers gamble by playing games of chance for money or other items of value. These games include blackjack, poker, roulette, craps, and slot machines. Many casinos also offer dining, entertainment, and shopping. Some are located in tourist destinations, while others are standalone facilities. In some countries, laws restrict the number of casinos.

Unlike most forms of gambling, which are largely isolated from one another, casinos are designed around noise, light, and excitement to persuade people to play and spend. The ambiance is often created by using bright colors that stimulate the senses. For example, the walls of a casino may be painted red to encourage players to continue betting. In addition, the sound of clanging coins and bells can be heard throughout the facility. Moreover, most of the time, gambling is conducted by a single person alone, but in some cases, groups of people are allowed to join.

In the United States, the largest casino is the WinStar World Casino and Resort in Thackerville, Oklahoma. It covers over 600,000 square feet and features thousands of slot machines and tables for other gambling activities. In a survey by Roper Reports GfK NOP and the U.S. Gaming Panel, the majority of casino gamblers prefer to play slots and other electronic devices. In contrast, only a quarter of the respondents preferred to play poker, 8% preferred blackjack, and 2% preferred craps. Nevertheless, many casinos focus on customer service and offer perks like free meals and drinks to lure customers to their facilities.