A special feature of the particular game theme, which is activated when certain symbols appear in a winning combination is called Bonus. Several items on the screen are presented to the player to choose. As the player chooses items, a number of credits is revealed and awarded. A mechanical device, such as a spinning wheel is used by some bonuses. To display the amount won it works in conjunction with the bonus.
A light on top of the slot machine is Candle. It alerts the operator that change is needed, hand pay is requested or there is a potential problem with the machine.
The term carousel is used to denote a grouping of slot machines, usually in a circle or oval formation.
A container where the coins that are immediately available for payouts are held is coin hopper. The hopper is a mechanical device that rotates coins into the coin tray when a player collects credits. A coin diverter is used to redirect excess coins into a drop bucket, or drop box when a certain preset coin capacity is reached.
Credit meter is used for displaying the amount of money or credits on the machine.
Drop bucket or Drop box is used for diverting exess coins from the hopper. Typically low denomination slot machines use a drop bucket. As for high denomination slot machines they use a drop box. A drop box contains a hinged lid with one or more locks whereas a drop bucket doesn't contain a lid. There exists a scheduled basis for collecting and counting the contents of drop buckets and drop boxes.
EGM is 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. When the amount of the payout exceeds the maximum amount that was preset by the slot machine's operator a hand pay occurs. 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.
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 is Hopper fill. The slip exists to indicate the amount of coins placed into the hoppers, the signatures of the employees involved in the transaction, the slot machine number and the location and the date.
Playing Low Level or Slant Top slot machines you can sit as they have a stool. Playing Stand Up or Upright slot machines you won't be able to sit.
A payback percentage based on a gambler using the optimal strategy in a skill-based slot machine game is called Optimal play.
The term Payline is used to denote a straight or zigzagged line that crosses through one symbol on each reel, along which a winning combination is evaluated. Up to nine pay lines are contained by classic spinning reel machines and video slot machines contain up to a hundred ones.
The term Rollup is used to mean the process of dramatizing a win by playing sounds while the meters count up to the amount that has been won.
A partial payout made by a slot machine, which is less than the amount due to the player is called Short pay. It can happen if the coin hopper has been depleted as a result of making earlier payouts to players. Then the remaining amount is paid as a hand pay or the machine is re-filled by an attendant.
A document provided by the manufacturer for all slot machines is called Theoretical Hold Worksheet. It 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.
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.

There are a lot of myths and superstitions about slots.
You can spot a winning slot machine.
The only way you'll spot a winning slot machine is when the bells are ringing and the money is dropping. RNG is the main element of every slot machine and one never knows what combination it will form.
Casinos place loose slots near the cashier, aisle ways, etc.
In reality it is not to casino’s advantage to place loose slots at one and the same place, because in this case gamblers would play only these slots. The slots are mixed and nobody can say for sure whether this slot is a loose one or not.
Count the number of symbols on the reels to determine your odds.
It is a rude mistake. RNG decides when the machine will stop and there are thousands of combination available on a 3 reel slot machine.
Casinos can tighten or loosen slot machines from the back office.
It is not as simple as that. The casino can’t just change the chip of the slot machine. It is illegal and it has to be permitted by the commission.
A slot machine that has not been paying is due to hit.
Absolutely false. The RNG assures this. You have an equal chance of winning on a losing machine as you do on a machine that just paid out the jackpot.
Pulling the slot machine handle produces more wins than pressing the spin button and visa versa.
Again false. It makes no difference, as the computer only uses these as mechanisms to start the game. Only the computer determines a win or a loss and it has already determined if you are a winner or loser even before the first reel stops spinning.
Playing with hot coins improves your chances.
It is false. Nothing can affect the outcome, the machine doesn’t care and doesn’t know whether your coins are cold or hot.
Casinos set slot machines to payback more on the weekends.
One more rude mistake. The chances and odds are always the same. It doesn’t matter when you play.

Slots are one of the oldest casino entertainments. They came through a number of changes and improvement. But the objective and the principle of the game always remain the same. Basically, you just put in the coins and wait to find out whether you won or not.
In fact all slot machines are the same. They only differ in some peculiarities: odds, payouts, payout percentage and symbols. There are so many varying designs around the classic slot machine that everyone could probably find their own ultimate preferred flavour.
Two most distinct types of slot machines are single line and multiline slots. As it can be understood from its name single line slots have only one line with 4 or 5 wheels. But multi line slots can have up to 25 lines. Multi line slots are a little bit more complicated because winning combinations may play out across a number of lines; when you win, the machine will draw you how the symbols combine together and calculate the win automatically. Sometimes you don't win anything at all, and sometimes multiple combinations award you with relatively big winning money. Paylines can be different. They can be vertical, diagonal, zigzags and what not.
Jackpot is also a feature peculiar not for all slots. In jackpot games, the slot machines accumulate a fraction of every wagered bet into a virtual pot. So the jackpot becomes bigger and bigger with every bet. Jackpots can reach several hundreds of thousands dollars. A certain winning combination hits the jackpot, and the lucky gambler collects everything that the ones before him left behind.
Since slot machines appeared they have been played with coins. Online casino slot machines are no exception to that rule, even though bets might differ slightly. Like regular slots they have betting limits, which can be even lower than in real casinos. Slots are the easiest casino games. They don’t require any decision on the player’s part.
Software slot machines (as well as the digital ones) are equipped with a random number generator which is what actually plays the game. This methodic allows very fair and precise balancing without actually hurting neither the players' interests nor the casino revenue.

The USA
The United States state governments regulate the availability of slot machines. To regulate the possession and use of slot machines many states have established gaming control boards. Nevada is the only state that has no significant restrictions against slot machines. Slot machines are allowed only in hotel casinos operated in Atlantic City in New Jersey. In some states slot machines are allowed only on licensed riverboats or permanently-anchored barges. Delaware allows to have slot machines only three horse tracks. They are regulated by the state lottery commission.

Native American Casinos
Native American casinos located in reservations are not permitted to have slot machines. It becomes possible when the tribe first reaches a pact with the state in which it is located. A pact entitles the state to receive a fraction of the gross revenue from slot machines.

Classes Of Slots
No federal law governs slot machines. There are different classifications of them. There are states where the usage of slot machines in a casino or other gaming area is restricted. A centralized computer system operates "Class III" (or "traditional") slot machines. The possibility that a player wing any payout is the same with every play. Nevada or Atlantic City have more Class III slots than any other state. They are sometimes referred to as "Vegas-style slots".
There is a connection between "Class II" slot machines ("video lottery terminals" or "VLTs") and a centralized computer system. The determination of the outcome of each wager is fulfilled by it. The chance of winning a series of limited prizes is equal for each machine. A fee for each Class III game is paid by the casino to the state. There are no tight regulations for Class II games.

Class II Game Characteristics
The players are playing against each other. They are competing for a common prize. There is always someone who wins. The game stops when the winner appears. In a given set there is a certain number of wins and losses. The combimation can occur again only after a new batch is initiated. There is a dependence of between the games. The player is an active participant of the game. There is the same set of numbers for all players.

Class III Game Characteristics
The player is playing against the house. The previous games don't influence the following ones. There can be any possible outcome in any game.

Slot Clubs
Many American casinos offer free memberships in "slot clubs". They offer to return a small fraction of the amount of money that is bet in the form of comps. These clubs require that players use cards to insert into the slot machines. Comps or "cash back" from these clubs makes significant differences in the maximum theoretical returns.

Australia
Queen of the Nile is a poker machine that is very popular in Australia. Gaming Machines is an official name for Australian slot machines. Physical reels are stimulated by video displays in Australian-style gaming machines. There are usually five of them. State governments regulate the use of gaming machines in Australia.
Not only casinos but also pubs and clubs in some states have Gaming machines. New South Wales legalized this style of gambling first. Their legalization in all registered clubs in the state was in 1956.
In Western Australia only particular forms of gaming machine are used.

United Kingdom
The terms fruit machines, one-armed bandits and AWP are used to denote slot machines in Britain. Fruit machines can be met in pubs, clubs, arcades, and some take-away food shops. There can be 3, 4 or 6 reels with around 16 or 24 fruit symbols printed around them. These reels should be spun. If certain combinations of fruit appear, winnings are paid from the machine. These are very similar to slot machines seen in casinos and elsewhere around the world. But there are some extra features. The jackpots from these machines are limited. The UK fruit machines have some features. A player can hold one or more reels before spinning. The chance of winning is sometimes increased. A player is also given a finite number nudges following a spin. The term nudge is used to denote a single-step rotation of a reel of the player's choice.
The maximum payout for an individual game is different depending on the type and the location of the machine. There are "club machines" in private members' clubs. They charge more per game and have higher jackpots.
The manner of operation of these machines is different from American slot machines. The probability of getting the jackpot in each game is independent of any other game.
The AWP fruit machine is popular across Europe and in countries such as the Czech Republic, Russia, and Ukraine.

Japan
Japanese slot machines are known as pachisuro. The traditional Japanese pachinko game is their ancestor. Slot machines are new phenomenon. They can be found in mostly in pachinko parlors and the adult sections of amusement arcades, known as game centers.
Regulation of the machines is fulfilled by IC chips. They have six different levels changing the odds of a "777". There is a variety of slot machines but there exist rules and regulations for all of them.

Have you ever met a man who has managed to cheat slots?
It is not a secret that it is next to impossible to cheat a slot machine. But do you know that Tommy Glenn Carmichael managed to improve the payout of the machine to his benefit.
Carmichael, now 53, had a long history of inventing devices to cheat slot machines. He was caught with one, called a top-bottom joint, and sentenced to prison. Upon his release, he continued to work on the problem and to devise a better way to cheat the new slot machines. The principle of his next invention was following: he inserted a guitar wire in the slot machine and it made the coins release from the hopper.
Later, as slot machines became computer based, he had to invent a new tool. He fooled a manufacturer into believing he was a customer and showing him the inside of a slot machine. From that experience, he learned what he needed to know to beat it. His new inventions was a light want that blinded the sensor of the slot machine and as a result got winnings. Other gamblers liked his invention and he had a lot of customers, which allowed him to earn up to ,000 a day. Now he could afford the most expensive cars and several houses.
But good thing will end one day. While using his devise Tommy was caught by the police. He was fined, but soon came back to the same business. By this time, authorities had tapped his phone and recorded conversations with other cheats who used his device. Three years’ probation and expropriation was the punishment. He has been banned from entering any casino.