A special feature of the particular game theme activated when certain symbols appear in a winning combination is Bonus. The player can choose from several items shown on a screen. After choosing items a number of credits is revealed and awarded. There are bonuses that 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.
Slot machines in a circle or oval formation are usually called Carousel.
A container where the coins that are immediately available for payouts are held is coin hopper. It is used to rotate coins into the coin tray when a player collects credits. There is a coin diverter used for redirecting 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.
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. A drop box can be found in high denomination slot machines. The difference between a drop box and a drop bucket is a hinged lid with one or more locks. The casino collects and counts the contents of drop buckets and drop boxes.
Electronic Gaming Machine is called EGM.
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. 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. 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. You can only stand playing Stand Up or Upright slot machines.
Optimal play is a payback percentage based on a gambler using the optimal strategy in a skill-based slot machine game.
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. 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.
The manufacturer for all slot machines provide them with a document called Theoretical Hold Worksheet. It indicates the theoretical percentage that the slot machine should hold based on adequate levels of coin-in. The reel strip settings, number of coins that may be played, the payout schedule, the number of reels and other information is indicated in the worksheet.
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.

There are at least two types of slot players.
Persistent player.
The players of this type believe that very soon there will be a period when the machine begins to pay. Just a second and the coins will be flying all over the casino!
Players become so persistent if they have already spent a lot of money for this slot and haven’t got anything or if they have found a slot machine that haven’t paid for a long period of time. They know the next big win, or any win is due to pay out. They can’t leave the machine because as soon as they do it will burst forth and pay out large sums. Maybe it can really work if you have already spent thousands of dollars and have got nothing back. The machine will pay any way.
In the old days when a payout occurred players would feel the coins to see if they were hot or cold. If the coins where hot then the slot machine had not paid out in a while and to the chaser this was good as the machine was do. But in reality any machine has numerous lights which heat the coins.
The chaser.
The player thinks that the machine he is going to play is not a machine that never pays. Players feel more comfortable and confident because they have been reinforced with a win and gain trust in the machine. There is some kind of comfort and trust between the slot machine and the player.

Slot machines have a vivid and diverse history. They came through a number of changes and improvement. But the objective and the principle of the game always remain the same. The player inserts coins in the machine and then wins or loses according to the outcome of the game.
In fact all slot machines are the same. They have different odds (and of course payouts), different payoffs, different symbols and different exterior arrangement, but there's little difference under the hood. 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 more difficult to understand because you win according to the winning combinations on the paylines, which can be formed in many ways. It can happen that you win nothing during the game or that you win big in a short while. There are machines with paylines; that is, vertical lines along which a winning combination must occur, but some don’t have them, as the winning combination may come in diagonals, zigzags, strange curves and in other ways and fashions.
Another interesting variation of the slot machine is a jackpot. 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. There is only one winning combination that can bring the gambler the jackpot.
Slot machines are historically played with coins. The new invention is a slot machine online, which doesn’t differ greatly from regular slot machines. Indeed, as well as with all small wager games, there are top bets - they're known as table limits in table games. 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.

Slot machines are honest because state gaming commissions make sure they are. However, in the past certain manufacturers have been caught using computer chips that cheat the customer.
When the first slots only appeared cheating was impossible because they worked mechanically, with independent wheels spinning and then stopping randomly. Modern slot machines differ form the old ones greatly. Now the integral part of any slot machine is a chip, which is programmed to select numbers randomly. The selected number determines the symbol which then comes out. There is a computer code. It generates the random numbers and determines whether the slot machine is loose or tight. The gaming inspector will examine the machine to make sure it will not deceive the player. That is, inspectors make sure that the machine pays off at the legal rate or better.
It is next to impossible to say whether the chip is programmed not in a right way because the machine is not supposed to pay out with every spin. Inspectors look at brands of machines and their chips before they are installed in casinos, but they can’t inspect each machine. In the case of the approval of the brand the manufactures can produce the slot machines, even change them if it doesn’t go out legal bounds. Manufacturers can change chips to make a machine pay less as long as the inspectors have approved that particular chip.
For example, the Nevada Gaming Commission caught American Coin using chips that did not allow poker royal flushes. Similarly, Universal Distributing Company was caught programming machines to show a “near miss” of a jackpot. One the one hand the machine would never have a jackpot and the player would keep on playing. Don’t keep silent if you come across such slot machine. Be sure that inspectors will examine this very machine and the casino itself to make sure everything is ok. Manufacturers that cheat are fined or they can lose their license.

There are many types of slot machine configurations but all work according to the same principles - put the money in the slots and pull the handle! According to the main slot classification there are two types of slots. They are straight slots and progressive slots. The main feature, which distinguishes straight slots from other types is that you get paid according to the payout table, which is shown on the slot machine. There are four other types inside of the straight slot group: multiplier, bonus multiplier, multiple payline and buy-a-pay slots. When playing multiplier slots you should always bare in mind that the payoff is dependent on the number of coins being bet. The Bonus Multiplier game offers a bonus if you make maximum bets. The principle of multiple payline slots is that the number of enabled payline depends on the number of coins bet. The Buy-a-Pay slots are profitable only if you place maximum bets. Progressive Jackpot is the main characteristic of the progressive slots. Progressive jackpot grows with each coin being bet. The jackpot total is posted above the machine and can grow to enormous sums of money.