When certain symbols appear in a winning combination a special feature of the particular game theme is activated, which is a Bonus. Several items on the screen are presented to the player to choose. A number of credits is revealed and awarded as the player chooses items. Some bonuses use a mechanical device, such as a spinning wheel. It works in conjunction with the bonus to display the amount won.
Candle is a light on top of the slot machine. 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.
A container where the coins that are immediately available for payouts are held is coin hopper. When a player collects credits this mechanical device rotates coins into the coin tray. 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 a visual display of the amount of money or credits on the machine.
There is a container located in a slot machine's base that is used to divert excess coins. A drop bucket can usually be found in low denomination slot machines. 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 is a scheduled basis on which the contents of drop buckets and drop boxes are collected and counted.
EGM is a short-hand for Electronic Gaming Machine.
A payout made by a slot attendant or cage, rather than the slot machine is Hand pay. 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 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. There is the slip that indicates 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 are equipped with a stool for you to 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.
The term Payline means 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.
Rollup is 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. This occurs if the coin hopper has been depleted as a result of making earlier payouts to players. In this case the remaining amount will be paid as a hand pay or an attendant will come and re-fill the machine.
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.

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.
This is mathematically impossible, remember the RNG (random number generator) determines the stops. Thereare literally millions of combinations on a 3 reel slot machine, so there is no way of determining odds by the symbols on the reels alone.
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.
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.
Once again, the computer determines a win or loss and the temperature of the machine or moneyirrelevant. Although it's funny that people still burn their fingers with lighters believing this works.
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.

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

Native American Casinos
There are no slot machines in Native American casinos located in reservations. It is permitted 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 Slot Machines
There is no federal law governing slot machines. There are different classifications of them. There are restrictions on the type of slot machines that can be used in a casino or other gaming area in some states. The operation of "Class III" (or "traditional") slot machines is fulfilled from a centralized computer system. The chance of winning any payout is the same with every play. There are a lot of Class III slots in Nevada or Atlantic City. The term "Vegas-style slots" is iften used to denote them.
"Class II" slot machines ("video lottery terminals" or "VLTs") are connected to 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. There is a fee for each Class III game that the casino has to pay to the state. There are no tight regulations for Class II games.

Characteristics Of Class II Games
The player is playing against other players. The prize is common. There is always someone who wins. The game is continued until someone wins. A given set has 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 must be an active participant. There is the same set of numbers for all players.

Class III Game Characteristics
The house plays against the player. Each game is independent of previous games. The outcome of any game is unpredictable.

Slot Clubs
Free memberships in "slot clubs" is offered by many American casinos. 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.

Australia
Queen of the Nile is very popular in Australia. Gaming Machines is an official name for Australian slot machines. Australian-style gaming machines have video displays for stimulating physical reels. There are five of them in most cases. State governments regulate the use of gaming machines in Australia.
Not only casinos but also pubs and clubs in some states have Gaming machines. 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.
In Western Australia only particular forms of gaming machine are used.

The UK
Fruit machines, one-armed bandits and AWP are the names for slot machines in Britain. Fruit machines are commonly found 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. Slot machines seen in casinos and elsewhere around the world are similar to these machines. But there are some extra features. There exists a strict jackpot limit. There are some features of fruit machines in the UK. There is an opportunity for a player 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. A single-step rotation of a reel of the player's choice is a called a nudge.
The maximum payout for an individual game is different depending on the type and the location of the machine. Private members' clubs are allowed "club machines". Their jackpots are higher and they are allowed to charge more per game.
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
Pachisuro are Japanese slot machines. The traditional Japanese pachinko game is their ancestor. Slot machines have appeared recently. There are slot machines 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.