Casinos are businesses that offer games of chance and live entertainment. They earn billions each year for the companies, investors, and Native American tribes that operate them. Casinos also bring in a significant amount of money for the state and local governments that regulate them and tax them. Casinos generate some revenue through the sale of food, beverages, and other services, but most of their income comes from gambling profits.

Gambling has been a part of human culture for millennia. Archeological records show that dice were used in China 2300 BC, and playing cards came into use around 500 AD. While some people choose to gamble on a casual basis with friends or family, others make it a full-time career. Despite the dangers of addiction, many people enjoy gambling and consider it a form of recreation.

In the early 1970s, Atlantic City permitted casinos and Native American tribes began converting their bingo halls into full-fledged casinos. In addition, several states amended their antigambling laws to allow for casino gambling.

Casinos attract patrons with free and discounted perks. In the 1970s, Las Vegas casinos offered cheap travel packages, free shows, and buffet meals to lure customers. These perks, known as comps, help the casinos maximize their gambling revenues. However, in the 21st century, casinos have become more selective about which customers they accept. They focus their investments on high rollers, who gamble in special rooms and spend a lot of money. These gamblers can be worth tens of thousands of dollars, and the casinos treat them like royalty.