Slots Terminology Explained

It is useful to learn the slots related terms, whether you are gambling online or in a land-based casino.

Learning the gambling-related phrases will improve upon your play and communication with fellow gamblers.

If you are playing online, eventually you will come upon these phrases.

When it comes to land-based casinos, these terms are a great way to start a conversation or join one.

In the following list, we have explained the meaning of the most popular and useful slots terms.

Slot Terms Explained


The number before this term determines the number of reels of symbols that the player can spin.

The most common examples are ‘3 Reel’ and ‘5 Reel’.

Bet, Bet Min, and Bet Max

The amount of money a player invests in a single spin is known as a ‘bet’.

Certain games come with a bet limitation.

The lowest amount an individual can place on a spin is known as ‘bet min’.

Usually, the requirement is 1 credit per 1 pay line. So, depending on the slot, it can be as low as 1 penny.

The highest amount an individual can place on a spin is known as ‘bet max’.

Usually, slots have a bet max button that automatically sets the highest rate for the player to spin.

Accordingly, the bet min leads to the lowest return for the players.

On the other hand, the bet max may result in the highest earnings.

slot machine


Action refers to the total amount of money a player has bet in a certain period.

Another interpretation is the total amount of time a player has spent on the slots of a particular casino.

Buy a Pay or a Feature

To buy a pay means to wager a certain amount to qualify for particular payouts.

For instance, the jackpot may not be available for placing lower bets.

To buy a feature has a similar meaning.

But instead of qualifying for payouts, you are qualifying for certain bonuses or game features.

Active Pay Line

An active pay line is a frame in which the symbols should occur or arrange.

The active pay line determines the slot rewards.

Furthermore, each line is activated separately.

The maximum amount of pay lines is 243.

243 Ways

If the slot is ‘243 way’ one, it means that it will pay out for symbols appearing on any of the reels.

Anyhow, the position of the symbols is important.

They should match on at least two adjacent spaces.


A carousel refers to a group of slot machines located on a single casino floor.

Coin Size

When you are betting on a slot machine, your money is converted to credits or coins.

The value that is assigned to each coin is known as the ‘coin size’ and may range from a penny to $100.

Free Play

Free play refers to the number of credits given to players at the slots for free.

Usually, players spend the free credits and then add some of their money to continue playing.

slot machines


A ‘hit’ is when a player gets numerous symbols on a pay line across the reels.

Loss Disguised as a Win

In some cases, the slot displays a winning sound even though the player lost money.

More exactly, the winning is less than the player’s bet.

Anyhow, it’s a great trick implemented by casinos.

One-Armed Bandit

One-Armed Bandit is another term for slot machines around the world.

Pay Back Percentage

Payback percentage is an extremely important term.

It specifies how much of the bets the machine returns as rewards.

If you have chosen a machine with a payback percentage of less than 90%, you should look for another slot.

Random Number Generator or RNG

The RNG is the software within the slot machine.

It enables random number generation based on mathematical analysis for each separate spin.

To conclude, there are countless other slot terms.

Anyhow, we tried to explain the ones you need the most.

Lukas Mollberg

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