A special feature of the particular game theme, which is activated when certain symbols appear in a winning combination is called Bonus. The player can choose from several items shown on a screen. As the player chooses items, a number of credits is revealed and awarded. Some bonuses use a mechanical device, such as a spinning wheel. It is used in conjunction with the bonus for displaying the amount won.
A light on top of the slot machine is Candle. It flashes to alert the operator that change is needed, hand pay is requested or 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.
Coin hopper is a container where the coins that are immediately available for payouts are held. It rotates coins into the coin tray when a player collects credits. A coin diverter automatically redirects 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.
Drop bucket or Drop box is a container located in a slot machine's base where excess coins are diverted from the hopper. A drop bucket can usually be found in low denomination slot machines. High denomination slot machines use a drop box. The difference between a drop box and a drop bucket is a hinged lid with one or more locks. There exists a scheduled basis for collecting and counting the contents of drop buckets and drop boxes.
Electronic Gaming Machine is called EGM.
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. At the level where the operator must begin to deduct taxes the maximum amount is set. A short pay can also result in a and 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 are shown with the slip.
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.
A straight or zigzagged line that crosses through one symbol on each reel, along which a winning combination is evaluated is called Payline. There are up to nine pay lines in classic spinning reel machines while there can be one hundred pay lines in video slot machines.
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. If the coin hopper has been depleted as a result of making earlier payouts to players the short pay happens. An attendant will come and re-fill the machine or the remaining amount will be paid as a hand pay.
The term Theoretical Hold Worksheet. Is used to denote a document provided by the manufacturer for all slot machines. 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.

You must know exactly the game you are playing.
It is important to know the correct amount of coins that should be inserted into a machine. Always cash out your credits before leaving a machine.
While playing just have a good time. You can increase your bets only when you are winning, and decrease your bets when you are losing.