When certain symbols appear in a winning combination a special feature of the particular game theme is activated, which is a Bonus. The player is presented with several items on a screen from which to choose. After choosing items a number of credits is revealed and awarded. There are bonuses that use a mechanical device, such as a spinning wheel. The amount won is displayed with the help of it in conjunction with the bonus.
There is a light on top of the slot machine called Candle. When change is needed, hand pay is requested or a potential problem with the machine appears it flashes.
The term carousel is used to denote a grouping of slot machines, usually in a circle or oval formation.
Coin hopper contains the coins that are immediately available for payouts. 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.
To display the amount of money or credits on the machine Credit meter is used.
A a container located in a slot machine's base where excess coins are diverted from the hopper is Drop bucket or Drop box. Typically, a drop bucket is used for low denomination slot machines. And a drop box is used for high denomination slot machines. A drop bucket doesn't contain a lid while a drop box contains a hinged lid with one or more locks. There is a scheduled basis on which the contents of drop buckets and drop boxes are collected and counted.
EMG is Electronic Gaming Machine.
The term Hand pay means a payout made by a slot attendant or cage, rather than the slot machine. A hand pay occurs when the amount of the payout is more than the maximum amount that was preset by the slot machine's operator. At the level where the operator must begin to deduct taxes the maximum amount is set. A hand pay could also be necessary as a result of a short pay.
Hopper fill is a document used for recording the replenishments of the coin in the coin hopper after it becomes depleted as a result of making payouts to players. 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.
Low Level or Slant Top slot machines include a stool so you can sit and play. You can only stand playing Stand Up or Upright slot machines.
The term Optimal play means a payback percentage based on a gambler using the optimal strategy in a skill-based slot machine game.
Payline is a straight or zigzagged line that crosses through one symbol on each reel, along which a winning combination is evaluated. There are up to nine pay lines in classic spinning reel machines while there can be one hundred pay lines in video slot machines.
The process of dramatizing a win by playing sounds while the meters count up to the amount that has been won is Rollup.
A partial payout made by a slot machine, which is less than the amount due to the player is called Short pay. This occurs if the coin hopper has been depleted as a result of making earlier payouts to players. An attendant will come and re-fill the machine or the remaining amount will be paid as a hand pay.
The manufacturer for all slot machines provide them with a document called Theoretical Hold Worksheet. Basing on adequate levels of coin-in it indicates the theoretical percentage that the slot machine should hold. 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.
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 is called Weight count.

Here is the list of the most amusing myths concerning 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. Slot machines use random numbergenerator and that's exactly that. Random.
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.
In order to change how a slot willpay out is by changing the computer chip. No casino can just flip a switch.
A slot machine that has not been paying is due to hit.
It is not so. With every game the chances of winning are the same.
Pulling the slot machine handle produces more wins than pressing the spin button and visa versa.
It is also a mistake. These things are only mechanisms for beginning the game. The machine knows whether you win or lose before the symbols begin to stop.
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.
Wrong again. Your odds of winning are the same no matter if it's 4:00pm Monday, 8:00pm Saturday or 3:00am Wednesday. Casinos can not and do not do this.

United States
The United States state governments regulate the availability of slot machines. Many states have established gaming control boards for regulating the possession and use of slot machines. There is only one state that has no significant restrictions against slot machines - Nevada. New Jersey allows only hotel casinos operated in Atlantic City to have slot machines. Only licensed riverboats or permanently-anchored barges are allowed to have slot machines in some states. Delaware allows slot machines at three horse tracks. State lottery commission regulates them.

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

Classes Of Slot Machines
No federal law is created to govern slot machines. There is no universal classification for all states. There are restrictions on the type of slot machines that can be used in a casino or other gaming area in some states. "Class III" (or "traditional") slot machines operate independently from a centralized computer system. A player's chance of winning any payout is the same with every play. There are a lot of Class III slots in Nevada or Atlantic City. "Vegas-style slots" is another name for them.
There is a connection between "Class II" slot machines ("video lottery terminals" or "VLTs") and a centralized computer system. It determines the outcome of each wager. Each machine has an equal chance of winning a series of limited prizes. The casino pays a fee to the state for each Class III game. 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 necessarily a winner in each game. The game stops when the winner appears. There is a certain number of wins and losses in a given set of wins. The combimation can occur again only after a new batch is initiated. The games depend on one another. The player is an active participant of the game. The announced numbers belong to the same set of numbers for all players.

Class III Game Characteristics
The player is playing against the house. There is no connection between the previous and the next games. Any possible outcome can occur in any game.

Slot Clubs
There is free memberships in "slot clubs" in many casinos of America. They offer to return a small fraction of the amount of money that is bet in the form of comps. A member of such club should use cards to insert into the slot machines. Comps or "cash back" from these clubs can make significant differences in the maximum theoretical returns.

Slots In Australia
One of the most popular Australian poker machine games is Queen of the Nile. Australian slot machines are called Gaming Machines. Australian-style gaming machines frequently use video displays to simulate physical reels. There are five of them in most cases. There are laws regulating the use of gaming machines in Australia which are created by State governments.
Gaming machines are found in casinos as well as pubs and clubs in some states. This style of gambling was legalized first in New South Wales. The year of 1956 was the year of their legalization in all registered clubs in the state.
Only particular forms of gaming machine are permitted to be used in Western Australia.

Slots In The United Kingdom
In Britain slot machines are known as fruit machines, one-armed bandits and AWP. Pubs, clubs, arcades, and some take-away food shops have fruit machines. These machines commonly have 3, but can be found with 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. Slot machines seen in casinos and elsewhere around the world are similar to these machines. But some extra features can be found. However, the jackpots from these fruit machines are strictly limited. The UK fruit machines have some features. A player may be given the opportunity to hold one or more reels before spinning. The chance of winning can sometimes be 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. Private members' clubs have "club machines". They charge more per game and have higher jackpots.
These machines differ from American slot machines. The jackpot can be won in each game independently.
The AWP fruit machine is popular across Europe and in countries such as the Czech Republic, Russia, and Ukraine.

Slots In Japan
Japanese slot machines are known as pachisuro. They are a descendant of the traditional Japanese pachinko game. Slot machines are new phenomenon. Pachinko parlors and the adult sections of amusement arcades, known as game centers have them.
IC chips regulate the machines. There are 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.