casino, originally, a public hall for music and dancing; by the second half of the 19th century, a collection of gaming or gambling rooms.

The classic example of a casino, and for long the world’s best known, is that at Monte-Carlo, which opened in 1863. The casino has long been a major source of income for the principality of Monaco.

The 21st-century casino is a place where gamblers can risk their money against a common gambler, called the banker or the house. Casinos have almost a uniform character throughout the world. In Europe nearly every country changed its laws in the latter half of the 20th century to permit casinos. In the United Kingdom licensed and supervised gambling clubs, mainly in London, have operated since 1960. Club membership is required and easily obtainable. Casinos are also regulated by the government in France, which legalized them in 1933. France boasts many of the most famous European casinos, including those at Cannes, Nice, Divonne-les-Bains, and Deauville. Other famous European casinos are found in Estoril, Portugal; Corfu, Greece; and Baden-Baden and Bad Homburg von der Höhe, Germany. In the United States legal casinos were long operated only in Las Vegas and other locations in Nevada, where various forms of commercialized gambling houses have been permitted since 1931. The economy of Las Vegas is almost entirely dependent on the large, luxurious casinos that have operated there since the late 1940s. Nearly 40 percent of the total tax revenue in the state of Nevada comes from gambling. A general expansion of casino gambling was under way in the United States during the last decades of the 20th century, with about $6 billion bet annually within casinos by the start of the 21st century. Casino gambling was introduced in Atlantic City, New Jersey, in 1978, and from the 1980s casinos also began appearing on various American Indian reservations, which are not subject to state antigambling statutes. Several American states amended their laws during the 1980s and ’90s to permit casinos, in some cases limited to those on riverboats. Casinos are also found in Puerto Rico, and there are casinos in many countries in South America. The casino in Havana was closed after the Cuban Revolution in 1959. There are estimated to be more than 3,000 legal casinos and gaming houses worldwide.

Casinos typically accept all bets made by patrons within an established limit, so that a patron cannot win more than a casino can afford to pay. Every game offered gives a casino a mathematical expectancy of winning, and it is very rare for a casino to lose money on its games, even for one day. Because of this virtual assurance of gross profit, casinos regularly offer big bettors extravagant inducements in the form of free spectacular entertainment, transportation, and elegant living quarters. Even lesser bettors are offered reduced-fare transportation, hotel rooms, free drinks and cigarettes while gambling, and other inducements.

Of the games played regularly at casinos, roulette is found throughout the world, being a principal gambling game in France, where casinos reduce their advantage to less than 1 percent to entice big bettors. In the Americas roulette appeals more to small bettors, and casinos take a larger percentage. Craps attracts the big bettors in American casinos, most of which demand an advantage no greater than 1.4 percent and some only 1 percent or less. Slot machines and (from the 1980s) video poker machines are the economic mainstay of American casinos, the income resulting from high volume, rapid play at sums ranging from five cents to a dollar, and the ability to adjust machines for any desired profit. Another very common game offered in most casinos is keno.

Of casino card games, baccarat—in the popular variant known as chemin de fer—is the principal gambling game in the United Kingdom and those European continental casinos most often patronized by the British, such as those at Deauville, Biarritz, and on the Riviera. Blackjack is a fixture in American casinos and trente et quarante in the French. Other card games are seldom played in casino gambling, although most American casinos have table games in the form of poker variants such as Caribbean stud. They very often also offer regular poker tables, where patrons play each other while the casino makes its profit either by taking a portion of each pot or by charging an hourly fee. Asian casinos offer several traditional Far Eastern games, primarily sic bo (which spread to several European and American casinos during the 1990s), fan-tan, and pai-gow. Occasionally other games of local interest may be found in some casinos, such as two-up in Australia, banca francesa in Portugal, boule in France, and kalooki in Britain.

Casinos dramatically increased their use of technology during the 1990s. In addition to their use for general security, video cameras and computers now routinely supervise the games themselves. For example, in “chip tracking,” betting chips with built-in microcircuitry interact with electronic systems in the tables to enable casinos to oversee the exact amounts wagered minute-by-minute and to be warned of any anomaly; roulette wheels are electronically monitored regularly to discover quickly any statistical deviation in their expected results. Other examples are wholly automated and enclosed versions of games such as roulette and dice, where no dealer is required and the players bet by pushing buttons.

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In 1995 Internet Casinos, Inc., operating out of the Turks and Caicos Islands, premiered as the first “virtual” casino. Competitors, including traditional casinos, soon offered their own online gambling games, which are run by computer programs. Typically, customers must deposit accounts with the operators of such casinos in order to wager (most American credit card companies refuse to validate online gambling transactions). By the start of the 21st century, about $25 billion annually was being bet at some 200 Internet casinos. A large number of these casinos were located in off-shore tax havens such as Antigua and Gibraltar, and many have been criticized for their lack of supervision by any regulatory authorities.

This article was most recently revised and updated by Chelsey Parrott-Sheffer.
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gambling, the betting or staking of something of value, with consciousness of risk and hope of gain, on the outcome of a game, a contest, or an uncertain event whose result may be determined by chance or accident or have an unexpected result by reason of the bettor’s miscalculation.

The outcomes of gambling games may be determined by chance alone, as in the purely random activity of a tossed pair of dice or of the ball on a roulette wheel, or by physical skill, training, or prowess in athletic contests, or by a combination of strategy and chance. The rules by which gambling games are played sometimes serve to confuse the relationship between the components of the game, which depend on skill and chance, so that some players may be able to manipulate the game to serve their own interests. Thus, knowledge of the game is useful for playing poker or betting on horse racing but is of very little use for purchasing lottery tickets or playing slot machines.

A gambler may participate in the game itself while betting on its outcome (card games, craps), or he may be prevented from any active participation in an event in which he has a stake (professional athletics, lotteries). Some games are dull or nearly meaningless without the accompanying betting activity and are rarely played unless wagering occurs (coin tossing, poker, dice games, lotteries). In other games betting is not intrinsically part of the game, and the association is merely conventional and not necessary to the performance of the game itself (horse racing, football pools). Commercial establishments such as casinos and racetracks may organize gambling when a portion of the money wagered by patrons can be easily acquired by participation as a favoured party in the game, by rental of space, or by withdrawing a portion of the betting pool. Some activities of very large scale (horse racing, lotteries) usually require commercial and professional organizations to present and maintain them efficiently.

Prevalence of principal forms

A rough estimate of the amount of money legally wagered annually in the world is about $10 trillion (illegal gambling may exceed even this figure). In terms of total turnover, lotteries are the leading form of gambling worldwide. State-licensed or state-operated lotteries expanded rapidly in Europe and the United States during the late 20th century and are widely distributed throughout most of the world. Organized football (soccer) pools can be found in nearly all European countries, several South American countries, Australia, and a few African and Asian countries. Most of these countries also offer either state-organized or state-licensed wagering on other sporting events.

Betting on horse racing is a leading form of gambling in English-speaking countries and in France. It also exists in many other countries. Wherever horse racing is popular, it has usually become a major business, with its own newspapers and other periodicals, extensive statistical services, self-styled experts who sell advice on how to bet, and sophisticated communication networks that furnish information to betting centres, bookmakers and their employees, and workers involved with the care and breeding of horses. The same is true, to a smaller extent, of dog racing. The emergence of satellite broadcasting technology has led to the creation of so-called off-track betting facilities, in which bettors watch live telecasts at locations away from the racetrack.

Casinos or gambling houses have existed at least since the 17th century. In the 20th century they became commonplace and assumed almost a uniform character throughout the world. In Europe and South America they are permitted at many or most holiday resorts but not always in cities. In the United States casinos were for many years legal only in Nevada and New Jersey and, by special license, in Puerto Rico, but most other states now allow casino gambling, and betting facilities operate clandestinely throughout the country, often through corruption of political authorities. Roulette is one of the principal gambling games in casinos throughout France and Monaco and is popular throughout the world. Craps is the principal dice game at most American casinos. Slot and video poker machines are a mainstay of casinos in the United States and Europe and also are found in thousands of private clubs, restaurants, and other establishments; they are also common in Australia. Among the card games played at casinos, baccarat, in its popular form chemin de fer, has remained a principal gambling game in Great Britain and in the continental casinos most often patronized by the English at Deauville, Biarritz, and the Riviera resorts. Faro, at one time the principal gambling game in the United States, has become obsolete. Blackjack is the principal card game in American casinos. The French card game trente et quarante (or rouge et noir) is played at Monte-Carlo and a few other continental casinos. Many other games may also be found in some casinos—for example, sic bo, fan-tan, and pai-gow poker in Asia and local games such as boule, banca francesa, and kalooki in Europe.

At the start of the 21st century, poker exploded in popularity, principally through the high visibility of poker tournaments broadcast on television and the proliferation of Internet playing venues. Another growing form of Internet gambling is the so-called betting exchanges—Internet Web sites on which players make wagers with one another, with the Web site taking a small cut of each wager in exchange for organizing and handling the transaction.

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In a wide sense of the word, stock markets may also be considered a form of gambling, albeit one in which skill and knowledge on the part of the bettors play a considerable part. This also goes for insurance; paying the premium on one’s life insurance is, in effect, a bet that one will die within a specified time. If one wins (dies), the win is paid out to one’s relatives, and if one loses (survives the specified time), the wager (premium) is kept by the insurance company, which acts as a bookmaker and sets the odds (payout ratios) according to actuarial data. These two forms of gambling are considered beneficial to society, the former acquiring venture capital and the latter spreading statistical risks.

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