Gambling in some form has been a part of nearly every culture since ancient times. Modern casinos are like indoor amusement parks for adults with music and lights, but the majority of their profits come from gambling games. Whether you play blackjack, slots, roulette, craps or baccarat, the house always wins. The house edge can be small—less than two percent—but it adds up over millions of wagers and billions of dollars in earnings each year.

Casinos attract gamblers with a mix of entertainment and financial incentives. They promote their games with bright lights and loud music, and they encourage players to gamble by giving them perks that reward those who spend the most. These rewards are called comps, and they can include anything from free hotel rooms to free shows to limo service and airline tickets. Casinos also try to limit the number of gambling addicts they attract by making it hard to win more than you can afford to lose.

Most casinos offer traditional gambling games such as baccarat (in its popular chemin de fer variation), blackjack, poker and keno. Some casinos specialize in Far Eastern games, such as sic bo and fan-tan. Most of these games are played on tables, but some casinos also have a few slot machines. In the 21st century, many casinos are focusing their investments on “high rollers” who gamble in special rooms separate from the main floor and can spend tens of thousands of dollars at a time. To keep track of these high rollers, casinos have cameras that are positioned on catwalks above the main gambling area and can be adjusted to focus on specific patrons by security workers in a control room.