A casino is a gambling establishment featuring table games and slot machines. Some casinos also offer dining, entertainment and hotel accommodations. The Bellagio in Las Vegas is one of the most well-known casinos in the world, thanks to its dancing fountains and luxurious accommodations. Other popular casinos include the Monte Carlo in Monaco and the Venetian Macau on the Cotai Strip. Casinos are regulated by government authorities to ensure fair play and security. To protect patrons, they use cameras, electronic surveillance and other methods to prevent cheating or collusion. In addition, the majority of games have mathematically determined odds that guarantee the house an edge over players. The advantage is usually expressed as a percentage, although it can vary by game and even between different casinos.

Casinos make their money by charging a fee to gamblers. This fee is called the vig or rake. The more a player wagers, the higher the vig. Casinos also generate revenue by giving out complimentary items to gamblers, known as comps. During the 1970s, many Las Vegas casinos offered discounted hotel rooms and free show tickets to attract gamblers.

According to a report by Gemini Research, the majority of people who gamble at casinos prefer slot machines. Card games (such as blackjack and poker) were the next most popular choice, followed by bingo and keno. In contrast, sports betting and gambling on horse races received very little attention. Communities with casinos tend to see an increase in local employment, as well as increased spending by visitors.