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. As the player chooses 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.
A light on top of the slot machine is Candle. It flashes when change is needed and hand pay is requested.
A grouping of slot machines, usually in a circle or oval formation are called Carousel.
Coin hopper is a container where the coins that are immediately available for payouts are held. 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.
A visual display of the amount of money or credits on the machine is called Credit meter.
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. And a drop box is used for high denomination slot machines. The difference between a drop box and a drop bucket is 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.
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. 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.
There is Hopper fill used to record 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 are equipped with a stool for you to sit and play. You will have to stand while 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 is used to denote 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.
Rollup is the process of dramatizing a win by playing sounds while the meters count up to the amount that has been won.
The term Short pay is used to mean 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.
Theoretical Hold Worksheet is 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.

To know what you are playing is necessary for you.
Only the correct amount of money should be inserted into a machine. Before leaving a machine cash out your credits.
Only if you have fun your gambling won't be stressful. Use money management. Increase your bets when you are winning, and decrease your bets when you are losing.