Slot machines in the Trump Taj Mahal

A slot machine (American English), fruit machine (British English), or poker machine (Australian English) is a certain type of casino game. Traditional slot machines are coin-operated machines with three or more reels, which spin when a lever on the side of the machine is pulled. The machines include a currency detector that validates the coin or money inserted to play. (The slot machine is also known informally as a one-armed bandit because of its traditional appearance and its ability to leave the gamer penniless.) The machine typically pays off based on patterns of symbols visible on the front of the machine when it stops. Modern computer technology has resulted in many variations on the slot machine concept. Today, slot machines are the most popular gambling method in casinos and constitute about 70% of the average casino's income.^[1] Download high resolution version (1308x826, 230 KB)Slot machines in the Trump Taj Mahal Taken by Raul654 on August 24, 2004. ... Download high resolution version (1308x826, 230 KB)Slot machines in the Trump Taj Mahal Taken by Raul654 on August 24, 2004. ... Wikipedia does not have an article with this exact name. ... For other uses, see American English (disambiguation). ... British English (BrE, BE, en-GB) is the broad term used to distinguish the forms of the English language used in the United Kingdom from forms used elsewhere in the Anglophone world. ... Australian English (AuE, AusE, en-AU) is the form of the English language used in Australia. ... Games available in most casinos are commonly called casino games. ... A leading edge slot on a Stinson 108-3. ... Wind turbines The scientific definition of a machine is any device that transmits or modifies energy. ... This movie film reel has film wrapped around it. ... Levers can be used to exert a large force over a small distance at one end by exerting only a small force over a greater distance at the other. ... A currency detector is a device that determines if a piece of currency is, or is not, counterfeit. ... This article does not cite its references or sources. ... Various denominations of currency, one form of money Money is any good or token that functions as a medium of exchange that is socially and legally accepted in payment for goods and services and in settlement of debts. ... Butch Cassidy, a famous outlaw An outlaw, a person living the lifestyle of outlawry, is most familiar to contemporary readers as a stock character in Western movies. ... This article or section does not adequately cite its references or sources. ...

History

Sittman and Pitt of Brooklyn, New York developed a gambling machine in 1891 that could be considered a precursor to the modern slot machine. It contained 5 drums holding a total of 50 card faces and was based on poker. This machine proved extremely popular and soon there was hardly a bar in the city that didn't have one or more of the machines bar-side. Players would insert a nickel and pull a lever, which would spin the drums and the cards they held, the player hoping for a good poker hand. There was no direct payout mechanism, so a pair of Kings might get the player a free beer, whereas a Royal Flush could pay out cigars or drinks, the prizes wholly dependent on what was on offer at the local establishment. To make the odds better for the house, two cards were typically removed from the "deck": the Ten of Spades and the Jack of Hearts, which cut the odds of winning a Royal Flush by half. The drums could also be re-arranged to further reduce a player's chance of winning. For other meanings, see Brooklyn (disambiguation). ... A game of Texas holdem, currently the most popular form of poker, in progress. ... This article or section does not cite any references or sources. ...

The first "one-armed bandit" was invented in 1887 by Charles Fey of San Francisco, California, who devised a much simpler automatic mechanism.^[2] Due to the vast number of possible wins with the original poker card-based game, it proved practically impossible to come up with a way to make a machine capable of making an automatic pay-out for all possible winning combinations. Charles Fey devised a machine with three spinning reels containing a total of five symbols – horseshoes, diamonds, spades, hearts and a Liberty Bell, which also gave the machine its name. By replacing ten cards with five symbols and using three reels instead of five drums, the complexity of reading a win was considerably reduced, allowing Fey to devise an effective automatic payout mechanism. Three bells in a row produced the biggest payoff, ten nickels. Liberty Bell was a huge success and spawned a thriving mechanical gaming device industry. Even when the use of these gambling devices was banned in his home state after a few years, Fey still couldn't keep up with demand for the game elsewhere. Charles Fey was a San Francisco mechanic who is most well-known for inventing the slot machine. ... Nickname: Location of the City and County of San Francisco, California Coordinates: , Country United States of America State California City-County San Francisco Founded 1776 Government  - Mayor Gavin Newsom Area  - City  47 sq mi (122 km²)  - Land  46. ... The United States five-cent coin, commonly called a nickel, is a unit of currency equaling one-twentieth, or five-hundredths, of a United States dollar. ...

Another early machine gave out winnings in the form of fruit flavoured chewing gums with pictures of the flavours as symbols on the reels. The popular cherry and melon symbols derive from this machine. The "BAR" symbol now common in slot machines was derived from an early logo of the Bell-Fruit Gum Company. In 1964, Bally developed the first fully electromechanical slot machine called Money Honey. Chewing gum Chewing gum is a type of confectionery which is designed to be chewed rather than swallowed. ... Bally Technologies logo Bally (with its distinctive Rolling Ball logo) Bally Technologies, Inc. ...

Description

A row of "Wheel of Fortune" slot machines in a casino in Las Vegas. This specific slot machine is themed to the TV game show Wheel of Fortune

A person playing a slot machine purchases the right to play by inserting coins, cash, or in newer machines, a bar-coded paper ticket (known as "ticket in/ticket out" machines), into a designated slot on the machine. The machine is then activated by means of a lever or button, or on newer machines, by pressing a touchscreen on its face. The game itself may or may not involve skill on the player's part — or it may create the illusion of involving skill without actually being anything else than a game of chance. Download high resolution version (3072x2048, 3052 KB)This image (C) User:Pcb21, 2003. ... Download high resolution version (3072x2048, 3052 KB)This image (C) User:Pcb21, 2003. ... For further information, see Las Vegas metropolitan area and Las Vegas Strip. ... This article does not cite any references or sources. ... A skill is an ability, usually learned and acquired through training, to perform actions which achieve a desired outcome. ... An illusion is a distortion of a sensory perception, revealing how the brain normally organizes and interprets sensory stimulation. ... Chance can be used in any of the following contexts: Probability Luck Randomness See also the Ancient Greek concept of Chance Chance, a 1913 novel by Joseph Conrad. ...

The object of the game is to win money from the machine. The game usually involves matching symbols, either on mechanical reels that spin and stop to reveal one or several symbols, or on a video screen. The symbols are usually brightly colored and easily recognizable, such as images of fruits, and simple shapes such as bells, diamonds, or hearts.

Most games have a variety of winning combinations of symbols, often posted on the face of the machine. If a player matches a combination according to the rules of the game, the slot machine pays the player cash or some other sort of value, such as extra games.

There are many different kinds of gambling slot machines in places such as Las Vegas. Some of the most popular are the video poker machines, in which players hope to obtain a set of symbols corresponding to a winning poker hand. Depending on the machine, players can play one, 100, or more hands at one time. For further information, see Las Vegas metropolitan area and Las Vegas Strip. ... Video poker is a casino game based on five-card draw poker. ... A game of Texas holdem, currently the most popular form of poker, in progress. ...

Becoming more popular now are the multi-line slots. These slots have more than one payline. Reel slots commonly have three or five paylines, while video slots have 9, 15, 25, or even 100 different paylines. Video slots are themed slots, with graphics and music based on popular entertainers or TV programs (The Addams Family, I Dream of Jeannie, etc.) with a bonus round. Most accept variable amounts of credit to play with 1 to 5 credits per line being typical. The higher the amount bet, the higher the payout will be. Of course, there are the standard 3 - 5 reel slot machines, of various types. These are the typical "one-armed bandits". The Addams Family is a creation of American cartoonist Charles Addams that appears in print cartoons, television shows, movies and video games. ... For the Xbox Live pseudonym Major Nelson, see Larry Hryb. ...

One of the main differences between video slots and reel slots is in the way payouts are calculated. With reel slots, the only way to win the maximum jackpot is to play the maximum number of coins (usually 3, sometimes 4, or even 5 coins per spin). With video slots, the fixed payout values are multiplied by the number of coins per line that are being bet. In other words: on a reel slot, it is to the player's advantage to play with the maximum number of coins available. On video slots, it is recommended to play as many individual lines as possible, but there is no benefit to the player in betting more than one credit per line with regards to calculating the payout amounts. (There are some isolated cases where a video slot machine requires the maximum number of credits per spin to be inserted to win the largest payout, but those are the exception.) An example: On the "Wheel of Fortune" reel slot, the player must play 3 coins per spin to be eligible to trigger the bonus round and possibly win the jackpot. On the Wheel of Fortune video slot, the chances of triggering the bonus round or winning the maximum jackpot are exactly the same regardless of the number of coins bet on each line.

Larger casinos offer slot machines with denominations from $.01 (penny slots) all the way up to $100.00 or more per credit. Large denomination slot machines are usually cordoned off from the rest of the casino into a "High Limit" area, often with a separate team of hosts to cater to the needs of the high-rollers who play there.

Slot machines common in casinos at this time are more complicated. Most allow players to accept their winnings as credits, which may be "spent" on additional spins.

In the last few years, new slot machines commonly known as "multi-denomination" have been introduced. In a multi-denomination slot machine, the player can choose the value of each credit wagered from a list of options. Based upon the player's selection, the slot machine automatically calculates the number of credits the player receives in exchange for the cash inserted and displays the amount of available credits to the player. (For example, a player could choose to wager one dollar per game on a nickel slot machine.) This eliminates the need for a player to find a specific denomination of a particular slot machine; they can concentrate on simply finding the machine and setting the denomination once they decide to play.

Recently, some casinos have chosen to take advantage of a concept commonly known as "tokenization": 1 token buys more than one credit. A casino can configure slot machines of numerous different denominations to accept the same type of token. (For example, all penny, nickel, quarter, and dollar slot machines could be configured to accept dollar tokens.) This significantly reduces a casino's inventory costs and coin handling costs. A tokenized slot machine automatically calculates the number of credits the player receives in exchange for the token inserted and displays the amount of available credits to the player. When a player chooses to collect his credits (by pressing a "Cash Out" button), the slot machine will automatically divide the number of credits on the credit meter by the value of one token and return the result to the patron. Any remainder is known as "residual credits" and cannot be collected. Residual credits must be either played or abandoned.

Terminology

Bonus is a special feature of the particular game theme, which is activated when certain symbols appear in a winning combination. In the bonus, the player is presented with several items on a screen from which to choose. As the player chooses items, a number of credits is revealed and awarded. Some bonuses use a mechanical device, such as a spinning wheel, that works in conjunction with the bonus to display the amount won.

Candle is a light on top of the slot machine. It flashes to alert the operator that change is needed, hand pay is requested or a potential problem with the machine.

Carousel refers to a grouping of slot machines, usually in a circle or oval formation.

Coin hopper is a container where the coins that are immediately available for payouts are held. The hopper is a mechanical device that rotates coins into the coin tray when a player collects credits/coins (by pressing a "Cash Out" button). When a certain preset coin capacity is reached, a coin diverter automatically redirects, or "drops", excess coin into a "drop bucket" or "drop box".

Credit meter is a visual L.E.D. display of the amount of money or credits on the machine.

Drop bucket or drop box is a container located in a slot machine's base where excess coins are diverted from the hopper. Typically, a drop bucket is used for low denomination slot machines and a drop box is used for high denomination slot machines. A drop box contains a hinged lid with one or more locks whereas a drop bucket does not contain a lid. The contents of drop buckets and drop boxes are collected and counted by the casino on a scheduled basis. Hard count is one process for counting coins in a casino or bank. ...

EGM is used as a short-hand for "Electronic Gaming Machine".

Hand pay refers to a payout made by a slot attendant or cage, rather than the slot machine. A hand pay occurs when the amount of the payout exceeds the maximum amount that was preset by the slot machine's operator. Usually, the maximum amount is set at the level where the operator must begin to deduct taxes. A hand pay could also be necessary as a result of a short pay.

Hopper fill slip is a document used to record the replenishments of the coin in the coin hopper after it becomes depleted as a result of making payouts to players. The slip indicates the amount of coin placed into the hoppers, as well as the signatures of the employees involved in the transaction, the slot machine number and the location and the date.

Low Level or Slant Top slot machines include a stool so you can sit and play. Stand Up or Upright slot machines are played while standing.

Optimal play is a payback percentage based on a gambler using the optimal strategy in a skill-based slot machine game.

Payline is a straight or zig-zagged line that crosses through one symbol on each reel, along which a winning combination is evaluated. Classic spinning reel machines usually have up to nine paylines, while video slot machines may have as many as one hundred.

Rollup is the process of dramatizing a win by playing sounds while the meters count up to the amount that has been won.

Short pay refers to a partial payout made by a slot machine, which is less than the amount due to the player. This occurs if the coin hopper has been depleted as a result of making earlier payouts to players. The remaining amount due to the player is either paid as a hand pay or an attendant will come and re-fill the machine.

Display screen of a slot machine in tilt mode

Tilt In the old mechanical days, slot machines had tilt switches. While modern machines no longer have tilt switches, any kind of mechanical failure (door switch in the wrong state, reel motor failure, etc) is still called a "tilt". Image File history File links Image(04). ... Image File history File links Image(04). ...

Theoretical Hold Worksheet is a document provided by the manufacturer for all slot machines, which indicates the theoretical percentage that the slot machine should hold based on adequate levels of coin-in. The worksheet also indicates the reel strip settings, number of coins that may be played, the payout schedule, the number of reels and other information descriptive of the particular type of slot machine.

Weight count is an American term, referring to the dollar amount of coins or tokens removed from a slot machine's drop bucket or drop box and counted by the casino's hard count team through the use of a weigh scale. Hard count is one process for counting coins in a casino or bank. ...

For a complete listing of slot machine terminology please refer to http://www.slotmachinecash.com/glossary.shtml

Pay table

Main article: Pay table

Each machine has a table that lists the number of credits the player will receive if the symbols listed on the pay table line up on the pay line of the machine. Some symbols are wild and will pay if they are visible in any position, even if they are not on the pay line. Especially on older machines, the pay table is listed on the face of the machine, usually above and below the area containing the wheels. Most video machines display the pay table when the player presses a "pay table" button or touches "pay table" on the screen; some have the pay table listed on the cabinet as well. A pay table is the name for the list of payouts on a slot machine or a video poker machine. ...

Technology

Random number generator

It is a common belief that the odds on a machine have something to do with the number of each kind of symbol on each reel, but in modern slot machines this is no longer the case. Modern slot machines are computerized, so that the odds are whatever they are programmed to be. In modern slot machines, the reels and lever are present for historical and entertainment reasons only. The positions the reels will come to rest on are chosen by a Random Number Generator (RNG) contained in the machine's software. A random number generator is a computational or physical device designed to generate a sequence of elements (usually numbers), such that the sequence can be used as a random one. ...

The RNG is constantly generating random numbers, at a rate of hundreds or maybe thousands per second. As soon as the lever is pulled or the "Play" button is pressed, the most recent random number is used to determine the result. This means that the result varies depending on exactly when the game is played. A fraction of a second earlier or later, and the result would be different.

Some professional gamblers observe that the RNG does not actually generate random numbers. Indeed, all RNG (also called Pseudorandom Number Generators or PRNGs) will eventually repeat their number sequence. This behavior is due to poor programming, as it is relatively easy to build PRNGs with periods so long no computer could complete a single period in the expected lifetime of the universe. Having access to the PRNG code and seed values Ronald Dale Harris, a former slot machine programmer, discovered equations for specific gambling games like Keno that allowed them to predict what the next set of selected numbers would be based on the previous games played. // A pseudorandom number generator (PRNG) is an algorithm that uses arithmetics to generate a sequence of numbers that approximate the properties of random numbers. ... Ronald Dale Harris is a computer programmer who worked for the Nevada Gaming Control Board in the early 1990s and was responsible for finding flaws and “gaffs” in software that runs computerized casino games. ... This article describes the lottery game. ...

Payout percentage

Slot machines are typically programmed to pay out as winnings between 82 to 98 percent of the money that is wagered by players. This is known as the "theoretical payout percentage". The minimum theoretical payout percentage varies among jurisdictions and is typically established by law or regulation. For example, the minimum payout percentage in Nevada is 75 percent and in New Jersey is 78 percent. The winning patterns on slot machines, the amounts they pay, and the frequency at which they appear are carefully selected to yield a certain percentage of the cost of play to the "house" (the operator of the slot machine), while returning the rest to the player during play. Suppose that a certain slot machine costs $1 per spin. It can be calculated that over a sufficiently long period, such as 1,000,000 spins, that the machine will return an average of $950,000 to its players, who have inserted $1,000,000 during that time. In this (simplified) example, the slot machine is said to pay out 95%. The operator keeps the remaining $50,000. Within some EGM-development organizations this concept is referred to simply as "par". "Par" also manifests itself to gamblers as promotional techiniques: "Our 'Loose Slots' have a 93% Pay-back! Play now!" As an aside, the "Loose Slots" actually may describe an anonymous machine in a particular bank of EGMS. Official language(s) English Capital Carson City Largest city Las Vegas Area  Ranked 7th  - Total 110,567 sq mi (286,367 km²)  - Width 322 miles (519 km)  - Length 490 miles (788 km)  - % water 0. ... Official language(s) English de facto Capital Trenton Largest city Newark Area  Ranked 47th  - Total 8,729 sq mi (22,608 km²)  - Width 70 miles (110 km)  - Length 150 miles (240 km)  - % water 14. ...

A slot machine's theoretical payout percentage is set at the factory when the software is written. Changing the payout percentages after a slot machine has been placed on the gaming floor requires a physical swap of the software, which is usually stored on an EPROM but may be downloaded to Non-Volatile Random Access Memory (NVRAM) or even stored on CD-ROM or DVD depending on the technological capabilities of the machine and the regulations of the jurisdiction. Based on current technology, this is a time consuming process and as such is done infrequently. In certain jurisdictions, such as New Jersey, the EPROM is sealed with a tamper-evident seal and can only be changed in the presence of Gaming Control Board officials. Other jurisdictions, including Nevada, randomly audit slot machines to ensure that they contain only approved software. Computer software (or simply software) refers to one or more computer programs and data held in the storage of a computer for some purpose. ... EPROM. The small quartz window admits UV light during erasure. ... It has been suggested that this article or section be merged with Non-volatile memory. ... The CD-ROM (an abbreviation for Compact Disc Read-Only Memory (ROM)) is a non-volatile optical data storage medium using the same physical format as audio compact discs, readable by a computer with a CD-ROM drive. ... Size comparison: A 12 cm Sony DVD+RW and a 19 cm Dixon Ticonderoga pencil. ... Tamper-evident devices are ones designed to make it easy to see whether they have been altered. ... Gaming Control Board or GCB is a governmental body or agency charged with regulating casino and other types of gaming in a defined geographical area, usually a state, and of enforcing gaming law in general. ... An audit is an evaluation of an organization, system, process, project or product. ...

In many markets where central monitoring and control systems are used to link machines for auditing and security purposes, usually in wide area networks of multiple venues and thousands of machines, player return must usually be changed from a central computer rather than at each individual machine. A range of percentages are preprogrammed into the game software and selected by configuring the machine remotely.

In 2006, the Nevada Gaming Commission began working with Las Vegas casinos on technology that would allow the casino's slot manager to change the game, the odds, and the payouts remotely via a computer. The change cannot be done instantaneously, but only after the selected machine has been idle for at least four minutes. After the change is made, the machine must be locked to new players for four minutes and display an on-screen message informing potential players that a change is being made.^[3]

Linked machines

Often machines are linked together in a way that allows a group of machines to offer a particularly large prize, or "jackpot". Each slot machine in the group contributes a small amount to this progressive jackpot, which is awarded to a player who gets (for example) a royal flush on a video poker machine, or a specific combination of symbols on a regular or 9 line slot machine. The amount paid for the progressive jackpot is usually far higher than any single slot machine could pay on its own. A progressive jackpot is a jackpot (highest payoff) for a gaming machine (usually a slot machine or video poker machine) where the value of the jackpot increases a small amount for every game played. ...

In some cases multiple machines are linked across multiple casinos. In these cases, the machines may be owned by the machine maker who is responsible for paying the jackpot. The casinos lease the machines rather than owning them outright. Megabucks may be the best known example of this type of machine. Megabucks Nevada starts at $10,000,000 after a jackpot. (Prior to September 2005, Megabucks Nevada reset to $7,000,000.) The new penny Megabucks video game also has a jackpot that starts at $10,000,000. This article or section should include material from Tenancy agreement A lease is a contract conveying from one person (the lessor) to another person (the lessee) the right to use and control some article of property for a specified period of time (the term), without conveying ownership, in exchange for... For the NBA basketball player with the nickname see Penny Hardaway A variety of low value coins, including an Irish 2p piece and many U.S. pennies. ...

Slot machines that are not linked to a large regional jackpot such as Megabucks usually have higher payout percentages, as linked machines have to take into consideration the large jackpot amount into their payout percentage calculations.

Near-miss programming

Because the reel display of modern slot machines is controlled by computer software, it is possible to make the slot machine frequently display combinations that are close to winning combinations. For instance, if the jackpot combination is "7-7-7", a slot machine could be programmed to frequently display "7-7-(non-7)". This can fool the player into thinking they "almost won", teasing them into playing more often. Jackpot is: A former British comic. ... Triple Seven (or Triple 7, Three Sevens, Three 7s, T7, 777 or 7-7-7) is a common winning line in simple slot machines, as common as 3 gold bars, 3 gold bells or 3 red cherries. ... A fool can refer to: Look up fool in Wiktionary, the free dictionary. ... Teasing is the act of playfully disturbing another person, either with words or with actions. ...

This practice of showing combinations that are similar to winning combinations more frequently than would occur randomly is called "near-miss" programming. It has been ruled illegal in the U.S. states of Nevada and New Jersey. The Nevada Gaming Commission did review some machines with this type of programming and refused to authorize them.

There is a related phenomenon that is also sometimes called "near-miss". The chance of a winning combination appearing on a payline is controlled by the winning percentages programmed into the slot machine. However, the combinations appearing above and below the payline are all roughly equally randomly distributed. This means it is much more likely that a "winning combination" will appear above or below a payline than on the payline. Using the same example above, it is much more likely that a "winning combination" of "7-7-7" would appear on a line above or below the payline than the chance that it would appear on the payline. This phenomenon only occurs where abbreviated physical reels are used to display a win pattern based upon the RNG. In Video Slot Machines, virtual reels are used and the symbols that appear around the winning line are usually an accurate depiction of how the reels were mathematically modeled.

The issue of a near-miss above or below the payline was also investigated by the Nevada Gaming Commission. They ruled that this was legal, so long as the "near-miss" above or below the payline was not specially programmed. In other words, the "near-miss" must be just as likely to occur as any other combination. The machine cannot be specially programmed to show "winning combinations" more frequently than other combinations above or below the payline.^[4]

The calculation is more complicated than implied here. The stops are not 'programmed' in the sense that their outcome is the result of a calculation. In fact, the reel strips (like a mechanical poker machine) are designed so that the machine will pay according to the relevant RTP.

Near-miss programming, where a near miss is inaccurately displayed (i.e. the player is shown something that is not an accurate representation of the reelstrips) is not allowed in Australia either. Due to this, regulators use stop motion cameras to audit manufacturer's practices.

Fraud

Mechanical slot machines and their coin acceptors were sometimes susceptible to cheating devices and other scams.^[5] One historical example involved spinning a coin with a short length of plastic wire. The weight and size of the coin would be accepted by the machine and credits would be granted. However, the spin created by the plastic wire would cause the coin to exit through the reject chute into the payout tray. This particular scam has become obsolete due to improvements in newer slot machines.

Modern slot machines are controlled by EPROM computer chips and, in large casinos, coin acceptors have become obsolete in favor of bill acceptors. These machines and their bill acceptors are designed with advanced anti-cheating and anti-counterfeiting measures and are difficult to defraud. Early computerized slot machines were sometimes defrauded through the use of cheating devices, such as the "slider" or "monkey paw" used by notorious slot cheat Tommy Glenn Carmichael. However, more recent attempts at defrauding slot machines involve manipulating the EPROM, such as by directing microwaves toward it to disrupt its proper functioning.^[6] Casino insiders such as Ronald Dale Harris have also been discovered manipulating the software in slot machines in order to defraud casino operators. Tommy Glenn Carmichael (July 5, 1950) is considered one of the greatest slot cheats. ... Ronald Dale Harris is a computer programmer who worked for the Nevada Gaming Control Board in the early 1990s and was responsible for finding flaws and “gaffs” in software that runs computerized casino games. ...

Regional variations

Row of slot machines inside Las Vegas airport.

Image File history File linksMetadata Download high resolution version (1100x768, 318 KB)Las Vegas slot machine, photographed in June 2006. ... Image File history File linksMetadata Download high resolution version (1100x768, 318 KB)Las Vegas slot machine, photographed in June 2006. ...

United States

In the United States, the public and private availability of slot machines is highly regulated by state governments. Many states have established gaming control boards to regulate the possession and use of slot machines. Nevada is the only state that has no significant restrictions against slot machines both for public and private use. In New Jersey, slot machines are only allowed in hotel-casinos operated in Atlantic City. Several states (Illinois, Indiana, Iowa, and Missouri) allow slot machines (as well as any casino-style gambling) only on licensed riverboats or permanently anchored barges. Since Hurricane Katrina, Mississippi has removed the requirement that casinos on the Gulf Coast operate on barges and now allows them on land along the shoreline. Delaware allows slot machines at three horse tracks, they are regulated by the state lottery commission. For a list of state by state regulations on private slot machine ownership, see U.S. state slot machine ownership regulations. Gaming Control Board or GCB is a governmental body or agency charged with regulating casino and other types of gaming in a defined geographical area, usually a state, and of enforcing gaming law in general. ... Official language(s) English Capital Carson City Largest city Las Vegas Area  Ranked 7th  - Total 110,567 sq mi (286,367 km²)  - Width 322 miles (519 km)  - Length 490 miles (788 km)  - % water 0. ... Official language(s) English de facto Capital Trenton Largest city Newark Area  Ranked 47th  - Total 8,729 sq mi (22,608 km²)  - Width 70 miles (110 km)  - Length 150 miles (240 km)  - % water 14. ... Map of Atlantic City in Atlantic County Coordinates: , Country United States State New Jersey County Atlantic Incorporated May 1, 1854 Government  - Mayor Bob Levy Area  - City  17. ... Official language(s) English[1] Capital Springfield Largest city Chicago Largest metro area Chicago Area  Ranked 25th  - Total 57,918 sq mi (149,998 km²)  - Width 210 miles (340 km)  - Length 390 miles (629 km)  - % water 4. ... Official language(s) English Capital Indianapolis Largest city Indianapolis Area  Ranked 38th  - Total 36,418 sq mi (94,321 km²)  - Width 140 miles (225 km)  - Length 270 miles (435 km)  - % water 1. ... Official language(s) English Capital Des Moines Largest city Des Moines Area  Ranked 26th  - Total 56,272 sq mi (145,743 km²)  - Width 310 miles (500 km)  - Length 199 miles (320 km)  - % water 0. ... Official language(s) English Capital Jefferson City Largest city Kansas City Largest metro area St Louis[1] Area  Ranked 21st  - Total 69,709 sq mi (180,693 km²)  - Width 240 miles (385 km)  - Length 300 miles (480 km)  - % water 1. ... A riverboat is a specialized watercraft (vessel) designed for operating on inland waterways. ... Self propelled barge carrying bulk crushed stone A barge is a flat-bottomed boat, built mainly for river and canal transport of heavy goods. ... This article does not cite any references or sources. ... Official language(s) None Capital Dover Largest city Wilmington Area  Ranked 49th  - Total 2,491 sq mi (6,452 km²)  - Width 30 miles (48 km)  - Length 100 miles (161 km)  - % water 21. ... U.S. state slot machine ownership regulations Here is a list of potential restrictions and regulations on private ownership of slot machines in the United States on a state by state basis. ...

Native American casinos

Native American casinos located in reservations are not permitted to have slot machines unless the tribe first reaches a pact with the state in which it is located (per Indian Gaming Regulatory Act). Typically, a pact entitles the state to receive a percentage of the gross revenue from slot machines. Native Americans in the United States are the indigenous peoples from the regions of North America now encompassed by the continental United States, including parts of Alaska. ... For the song, see Indian Reservation (song) BIA map of reservations in the United States Tribal sovereignty: Map of the United States, with non-reservation land highlighted. ... The Indian Gaming Regulatory Act (Pub. ...

Slot machine classes

The Following statements are generalities, not actual laws for every state. There is no federal law governing slot machines, so these classifications may vary from state to state.

Some states have restrictions on the type (called "class") of slot machines that can be used in a casino or other gaming area. "Class III" (or "traditional") slot machines operate independently from a centralized computer system and a player's chance of winning any payout is the same with every play. Class III slots are most often seen in Nevada or Atlantic City and are sometimes referred to as "Vegas-style slots". The concept of a centralized system is one which has a major hub or hubs which peers communicate with. ...

"Class II" slot machines (also known as "Video Lottery Terminals" or "VLTs") are connected to a centralized computer system that determines the outcome of each wager. In this way, Class II slot machines mimic scratch-off lottery tickets in that each machine has an equal chance of winning a series of limited prizes. Either class of slot machines may or may not have a player skill element. A Video Lottery Terminal or VLT is a gambling machine that allows gamblers to bet on the outcome of a video game. ...

In general a game must have all characteristics of a Class II game to be a Class II game. Any characteristic of a Class III game makes it a Class III game. The casino pays a fee to the state for each Class III game and can only purchase so many Class III licenses. There is no such restriction for Class II games. Class II games are not so nearly regulated by the state.

Class II game characteristics

1. The player is playing against other players and competing for a common prize.
2. There is certain to be a winner in each game. The game continues until there is a winner.
3. In a given set there are a certain number of wins and loses. Once a certain combination has happened it cannot happen again until a new batch is initiated. This is most obvious in scratch card games that come in a pack. Once a card has been pulled those winning combinations cannot occur again until a new pack of cards is installed. One game is dependent on previous games.
4. The player must be an active participant. They must recognize events as they occur and must recognize when they have won and announce their winning. Bingo is an excellent example here.
5. All players play from the same set of numbers as they are announced.

Class III game characteristics

1. The player is playing against the house.
2. There is a very real possibility that the player may lose the game.
3. Each game is independent of previous games. Any possible outcome can occur in any game.
4. Wins are announced automatically.

Slot clubs

Many American casinos offer free memberships in "slot clubs", which return a small percentage of the amount of money that is bet in the form of "comps" (complimentary food, drinks, hotel rooms, or merchandise), or sometimes as cash back (sometimes with a restriction that the cash be redeemed at a later date). These clubs require that players use a card that is inserted into the slot machine, to allow the casino to track the player's "action" (how much the player bets and for how long), which is often used to establish a level of play that may make a player eligible for additional comps. Comps or cash back from these clubs can make a significant difference in the maximum theoretical return when playing slot machines over a long period of time.

Australia

Queen of the Nile (manufactured by Aristocrat), one of the most popular Australian poker machine games, also very popular in some American casinos

Slot machines in Australia are generally referred to as "video poker", "poker machines" or "pokies", but are officially termed Gaming Machines. Australia has seen changes in regulations leading to proliferation of gaming machine venues in various states, most notably New South Wales, Victoria and Queensland. Various bodies, including religious organisations and welfare groups, claim that this has increased levels of "problem gambling". Image File history File links Download high resolution version (1184x888, 182 KB) Summary Australian poker machine (slot machine), Queen of the Nile, I took the photo 2005 Licensing File links The following pages link to this file: Slot machine ... Image File history File links Download high resolution version (1184x888, 182 KB) Summary Australian poker machine (slot machine), Queen of the Nile, I took the photo 2005 Licensing File links The following pages link to this file: Slot machine ... Capital Sydney Government Constitutional monarchy Governor Professor Marie Bashir Premier Morris Iemma (ALP) Federal representation  - House seats 50  - Senate seats 12 Gross State Product (2004-05)  - Product ($m)  $305,437 (1st)  - Product per capita  $45,153/person (4th) Population (End of March 2006)  - Population  6,817,100 (1st)  - Density  8. ... Motto: Peace and Prosperity Other Australian states and territories Capital Melbourne Governor HE Mr John Landy Premier Steve Bracks (ALP) Area 237,629 km² (6th)  - Land 227,416 km²  - Water 10,213 km² (4. ... Capital Brisbane Government Constitutional monarchy Governor Quentin Bryce Premier Peter Beattie (ALP) Federal representation  - House seats 28  - Senate seats 12 Gross State Product (2004-05)  - Product ($m)  $158,506 (3rd)  - Product per capita  $40,170/person (6th) Population (End of November 2006)  - Population  4,164,590 (3rd)  - Density  2. ...

Australian-style gaming machines use video displays to simulate physical reels, usually five. These machines have additional bonusing and second-screen features such as free games and bonus levels. They also allow for multiple lines (up to 50) or multiple ways (up to 243) to be played. This higher level of complexity offers greater opportunity of rewards for players.

Gaming machines are found in casinos (approximately one in each major city) as well as pubs and clubs (usually sports, social, or RSL clubs). There are suggestions that this high level of accessibility may be linked to problem gambling; however, the precise nature of this link is still open to research.^[7] The first Australian state to legalize this style of gambling was New South Wales in 1956 when they were made legal in all registered clubs in the state. This article or section is not written in the formal tone expected of an encyclopedia article. ... RSL National HQ, on Constitution Ave, Canberra, nearest the Australian Defence Force Russell Offices HQ The Returned and Services League of Australia (often abbreviated to RSL) is a support organisation for men and women who have served or are serving in the Australian Defence Force. ... Capital Sydney Government Constitutional monarchy Governor Professor Marie Bashir Premier Morris Iemma (ALP) Federal representation  - House seats 50  - Senate seats 12 Gross State Product (2004-05)  - Product ($m)  $305,437 (1st)  - Product per capita  $45,153/person (4th) Population (End of March 2006)  - Population  6,817,100 (1st)  - Density  8. ...

Laws governing gaming machines in Australia are controlled at the state level and as such, those laws vary between states. In the state of Queensland gaming machines in pubs and clubs must provide a return rate of 85% while machines located in casinos must provide a return rate of 90% [1]. Most other states have similar provisions. Capital Brisbane Government Constitutional monarchy Governor Quentin Bryce Premier Peter Beattie (ALP) Federal representation  - House seats 28  - Senate seats 12 Gross State Product (2004-05)  - Product ($m)  $158,506 (3rd)  - Product per capita  $40,170/person (6th) Population (End of November 2006)  - Population  4,164,590 (3rd)  - Density  2. ...

United Kingdom

Row of old fruit machines in Teignmouth Pier, Devon

Slot machines are usually known as Fruit machines, Bandits and AWP (Amusement with Prizes) in Britain. Fruit machines are commonly found in pubs, clubs, arcades, and some take-away food shops. These machines commonly have 3 or 6 reels with around 16 or 24 fruit symbols printed around them. These reels are spun, and if certain combinations of fruit appear, winnings are paid from the machine, or subgames are played. These are very similar to slot machines seen in casinos and elsewhere around the world, but the term "fruit machine" is usually applied to a type of machine more commonly found in pubs and arcades. These games have lots of extra features, trails and subgames with opportunities to win money, usually more than can be won from just the reels. However, the jackpots from these fruit machines are strictly limited. An old-fashioned word for these machines can be 'Didlers'. Image File history File links Download high-resolution version (2100x1400, 951 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Slot machine ... Image File history File links Download high-resolution version (2100x1400, 951 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Slot machine ... arcade, see Arcade. ...

Currently in the UK, the cost of an individual game may not exceed 50p. The maximum payout for an individual game depends on the type and the location of the machine, but is typically £35 in pubs where people under the age of 18 are not allowed entry. It is known for machines to payout multiple jackpots, one after the other (this is known as a streak) but each jackpot requires a new game to be played so as not to circumvent the maximum payout. The minimum payout percentage is 70% in Britain, with pubs often setting the payout at around 78%. Private members clubs are allowed "club machines", which have higher jackpots and are allowed to charge more per game.

These machines also operate in a different fashion to American slot machines; whereas slots are programmed to pay a percentage over the long-run, there is no reason why a jackpot cannot be paid straight after one has already been won - this is because over the long-run the percentage payout will be the same. However, in the UK, a fruit machine takes on an amount above its payout percentage before winning, so if a payout is 95%, a machine will make the player lose £10 before paying out £9.50. As such, it is sensible to watch for people playing these machines but not winning as the likelihood of a win increases. This, however, is called Sharking.

This type of fruit machine is popular across Europe (in the countries where they are legal), and very popular in countries such as the Czech Republic, Russia, and Ukraine. World map showing the location of Europe. ...

It has been alleged by the Fairplay campaign that UK fruit machines employ fraudulent techniques in which gambles and chances which appear to be random are in fact pre-determined and cannot be affected by player choices.^[8]

...at this point, you'll have gambled the win up to £25. However, the machine doesn't want you to gamble any further. If from the 5 you select "High", the machine will spin in a 3 and you'll lose. If, on the other hand, you select "Low", the machine will spin in a 9 and you'll lose...

The claims centre around the emulation of fruit machine hardware on Windows-based computers, which can allow for a fruit machine's RAM state to be saved at a particular point and replayed making a different choice. Although there was only two practical example demonstrating this which the end user could replicate, there was a lot of debate between fairplay campaigners and the fruit machine emulation authors about the reliability of these claims. The authors suggested that the emulators did not have 100% complete core emulation and does not lead or prove the assumption that fruit machines "cheat"; The fairplay campaign, led by Stuart Campbell rubbished these claims publicly on various internet forums. After some TV and radio coverage on behalf of the fairplay campaign on this issue, the fruit machine industry has hit back at the allegations through BACTA, releasing a statement on the issue.^{[citation needed]}

BACTA at the time, issued guidance to provide voluntary notices are to be put in place on a sticker for older machines or integrated on the "top glass" artwork, most fruit machine manufacturers have done this for circa 2005 machines. This is in fact the law now in the UK, and all machines carry a notice informing the user that the machine may at times offer the player a choice in which they have no possible chance to win. You can often find messages on the artwork on machines also stating not to reproduce the software, artwork, etc in any way, shape or form without permission. The newest UK machines are called 'section 16's' - these are 20 lines, across 5 reels of 3 symbols high, playable from 1 or 5 lines minimum (10p-50p spin) up to £2 which is 10p for all 20 lines. Like the RNG comments state, the RN sequence repeats itself, as anybody who plays on autoplay will note. Some machines let you play £4-10 for all 20 lines, on the pretext of upping the percentage from 92-94 or 96,^{[citation needed]}

Japan

Japanese slot machines, known as pachisuro, are a descendant of the traditional Japanese pachinko game. Slot machines are a fairly new phenomenon and they can be found in mostly in pachinko parlors and the adult sections of amusement arcades, known as game centers. Classic pachinko machine Pachinko parlor at night Entrance to pachinko parlor in Shibuya, Tokyo, Japan. ... A video arcade (known as an amusement arcade in the United Kingdom) is a place where people play arcade video games. ...

The machines are regulated with IC chips, and have six different levels changing the odds of a "777". The levels provide a rough outcome of between 90% to an astonishing 160% (200% if using skills). Indeed, the Japanese slot machines are "beatable". The parlor operators, naturally set most of the machines to collect money, but intentionally place a few paying machines on the floor so that there will at least someone winning, encouraging players on the losing machines to keep gambling.^{[citation needed]}

Despite the many varieties of the machines, there are certain rules and regulations put forward by the "Security Electronics and Communication Technology Association", an affiliate of the National Police Association (NPA). For example, there must be three reels. Also, all reels must be accompanied by buttons which stop these reels, no more than 15 coins can be paid out per plays, credit meter cant go higher than 50, 3 coin maximum bet, etc.^{[citation needed]}

Although a 15 coin payout may seem ridiculously low, the regulations allow "Big Bonus" (~400-->711 coins) and "Regular Bonus" modes (~110 coins) where these 15 coin payouts occur nearly continuously until the bonus mode finished. While the machine is in bonus mode, the player is entertained with special winning scenes on the LCD display, and energizing music is heard, payout after payout.

Three more unique features of Pachisuro machines are "Stock", "Renchan", and tenjō (天井, tenjō^?). On many machines, when enough money to afford a bonus is taken in, the bonus is not immediately awarded. Typically the game merely stops making the reels slip off the bonus symbols for a few games. If the player fails to hit the bonus during these "standby games", it is added to the "Stock" for later collection. Many current games, after finishing a bonus round, set the probability to release additional stock (gained from earlier players failing to get a bonus last time the machine stopped making the reels slip for a bit) very high for the first few games. As a result, a lucky player may get to play several bonus rounds in a row (a "Renchan"), making payouts of 5000, even 10,000 coins possible! The lure of "Stock" waiting in the machine, and the possibility of "Renchan" tease the gambler to keep feeding the machine. To tease him further, there is a tenjō (ceiling), a maximum limit on the number of games between "Stock" release. For example, if the tenjō is 1500, and the number of games played since the last bonus is 1490, the player is guaranteed to release a bonus within just 10 games.

Because of the "Stock", "Renchan", and tenjō systems, it is possible to make money by simply playing machines on which someone has just lost a huge amount of money. This is called being a "hyena". They are easy to recognize, roaming the aisles for a "Kamo" ( "sucker" in English) to leave his machine.

In short, the regulations allowing "Stock", "Renchan", and tenjō has transformed the Pachisuro from a low-stakes form on entertainment just a few years back to the hard-core gambling it has become in 2006. Many people may be gambling more than they can afford, and the big payouts also lure unsavory "hyena" types into the gambling halls. For other uses, see Debt (disambiguation). ...

To address these social issues, a new regulation (Version 5.0) has been adopted in 2006 which caps the maximum amount of "Stock" a machine can hold to around 2000--3000 coins worth of bonus games. Moreover, all Pachisuro machines must be re-evaluated for regulation compliance every 3 three years. Version 4.0 came out in 2004, so that means all those machines with the up to 10000 coin payouts will be removed from service by 2007. Only time will tell how these changes will affect the Japanese Pachisuro industry.

Skill Stops

'Skill Stop' Buttons were added to some slot machine by Zacharias Anthony in the early 70's which allowed the player to stop each reel allowing a degree of 'skill' to satisfy New Jersey gaming laws of the day which required that players be allowed to control the game in some way. This is the first known use of the skill stop on slot machine. The conversion was applied to late model Bally slots. Because the typical machine stopped the reels automatically in less than 10 seconds weights were added to the mechanical timers to prolong the automatic stopping of the reels. There were approx. 50 machines involved in the original conversion. By the time the New Jersey ABC ( Alcoholic Beverages Commission ) had approved the conversion for use in New Jersey arcades the word was out and every other distributors began adding skill stops. The machines were a huge hit on the Jersey Shore. The rest of the unconverted Bally machines were destroyed as they had become instantly obsolete.

Common misunderstandings

"Hot" and "Cold" machines

Standard slot machines do not get "hot" or "cold". The odds of hitting a winning combination are determined by a random number generator contained in the machine's software and is exactly the same with every spin. Such slot machines are never "due to be hit" if they haven't paid out a jackpot in a while. (Exception: UK-style AWP and Japan-style Pachisuro machines are progressive which means chances of winning will increase over time if the machine has not paid any wins out. Many also "force" wins on players in order to meet the payout percentage ^{[citation needed]}). In probability theory and statistics the odds in favor of an event or a proposition are the quantity p / (1 − p), where p is the probability of the event or proposition. ...

Placement

There is a science to the placement of slot machines on the gaming floor, but the highest paying machines are not necessarily placed in high-traffic areas. Typically, machines of similar payback percentages are grouped together, with 1% or less difference from machine to machine in the group.

Payout changes

• In most jurisdictions, casinos cannot alter the machine's payout percentage by time of day, day of week, or remotely via a computer.
• Using a slot club card does not affect the machine's payout percentage. The card just allows the casino to keep track of the amount wagered by a player and issue complimentaries accordingly.

Missed opportunities

Consider these two scenarios:

• You leave a machine. Another player comes up and immediately hits a jackpot. You think, "If I had played just one more time, I would have won that jackpot."
• A machine returns a higher jackpot for playing more coins. You play fewer coins, and a winning combination appears. You think, "If I had played more coins, I would have won more money."

In both cases, you did not "miss" an opportunity to win. The results of modern slot machines depend on exactly when you play them. It is very unlikely in either case that you would have received the same result if you had played just one more time or just one more coin. This is because the random numbers being generated are constantly changing thousands of times per second. It is impossible to assume that the instant you would have made the play would be the same for the other opportunity, thus getting different results from the machine. See Random Number Generator above.

Addiction

Main article: Problem gambling

Slot machines, like other gambling devices and games, can be addictive to some individuals. Problem gambling is an urge to gamble despite harmful negative consequences or a desire to stop. ...

References

1. ^ How Slot Machines give Gamblers the Business, from The Atlantic
2. ^ Charles Fey article
3. ^ Article on 2006 changes to video slots
4. ^ Description of how Near-Miss works
5. ^ Description of old machine scams
6. ^ Description of new machine scams
7. ^ http://www.pc.gov.au/inquiry/gambling/finalreport/index.html|See Chapter 8, Productivity Commission Report no.10
8. ^ Fairplay campaign

Bibliography

• Brisman, Andrew. The American Mensa Guide to Casino Gambling: Winning Ways (Stirling, 1999) ISBN 0-8069-4837-X
• Grochowski, John. The Slot Machine Answer Book: How They Work, How They've Changed, and How to Overcome the House Advantage (Bonus Books, 2005) ISBN 1-56625-235-0
• Legato, Frank. How to Win Millions Playing Slot Machines! ...Or Lose Trying (Bonus Books, 2004) ISBN 1-56625-216-4

See also

• Online Slot Games
• Pachinko
• Progressive jackpot
• Quiz machine
• Video Lottery Terminal
• Video poker
• United States state slot machine ownership regulations

The first online slots appeared in 1996 at The Gaming Club and Intercasino, the first two online casinos. ... Classic pachinko machine Pachinko parlor at night Entrance to pachinko parlor in Shibuya, Tokyo, Japan. ... A progressive jackpot is a jackpot (highest payoff) for a gaming machine (usually a slot machine or video poker machine) where the value of the jackpot increases a small amount for every game played. ... A quiz machine is a type of slot machine in which the player must answer questions in addition to, or instead of, matching symbols. ... A Video Lottery Terminal or VLT is a gambling machine that allows gamblers to bet on the outcome of a video game. ... Video poker is a casino game based on five-card draw poker. ... Here is a list of potential restrictions and regulations on private ownership of slot machines in the United States on a state by state basis. ...

External links

• Top Ten Tips for Winning at Slot Machines
• HowStuffWorks: Slot Machines
• How Slot Machines Work
• Slot Machines explained
• Slot Machines database from 1898 to today