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Slot game Terminology

15 Mar 2022

Online casino slots come in all shapes and forms and it’s not always easy to keep up with all words and features of slots!

With this terminology list, we’ll explain all of the most common features that you’ll come across as you play online slots here at Pure Win!


The Autoplay feature is great for when you want to just sit back and enjoy the show. Using the Autoplay tool allows you to let the game play for you. 

You set the number of spins you’d like to play, and also if you’d like the feature to stop when the game’s bonus is triggered. 

Bet limit

The bet limit allows you to bet a comfortable amount with each spin. Different slots have different bet limits, but the majority will allow you to play for as little as a few rupees, up to several lakh.

Older payline slots allow you to adjust the number of active paylines as well, which can bring the cost of a spin down even further.

Free Spins

Slot bonus rounds often consist of Free Spins. As the name suggests, these spins are free, meaning that they won’t cost you anything to play!

Free Spins are just that, or they are played with unique features that further increase your chances of winning.


The Jackpot is one of the main reasons why people play online slots. Winning the jackpot is like winning the lottery; it’s a huge instant payout, often several crores big!

Jackpots can either be progressive or local. A progressive jackpot grows as players play games with the jackpot, and the pot can be won by anyone, no matter at what casino they play.

A local jackpot can only be won by players playing at a specific casino.

Mega Moolah

Mega Moolah is a progressive jackpot from Microgaming. The jackpot is part of a number of games, and the pot starts at ₹10.2 crores and grows from there. In other words, it makes every winner an instant crorepati!


Yet another progressive jackpot from Microgaming is the WowPot jackpot. Here at Pure Win, you’ll find it in games like Book of Atem and Sherlock & Moriarty.

Red Tiger Jackpots

The game provider Red Tiger created a market-changing progressive jackpot with their Must Drop and Daily Jackpot. 

The jackpots are progressive and split into time frames during which they have to drop. 

The Daily jackpot has to drop once every 24 hours, the weekly, once every week, and the biggest jackpot will drop randomly!

Mystery symbol

Many believe that the Mystery Symbol is Wild, but this is not the case. Mystery symbols will land on the reels and then transform into a random paying symbol. 

If more than one Mystery symbol has landed during a spin, they will transform into an identical symbol.

Paying symbols

Paying symbols are the foundation of a slot. Lining up these according to the winning mechanic of the game will give you cash in return!

Usually, paying symbols are split into two groups, high-paying, and low-paying. It’s common for the low-paying symbols to be represented by card suits (hearts, spades, diamonds, and cloves) or by card values (9, 10, J, Q, K, A).

High-paying symbols are designed to match the theme of the game. In Gonzo’s Quest, they’re tribal statues; in Book of Dead, they’re objects from ancient Egypt.


Respins can happen for many reasons, from completely randomly, to whenever a spin ends up unlucky. 

A Respin will trigger directly after another spin, and it spins automatically and without charge. In that sense, it’s similar to a Free Spin, but it’s not required to happen as a separate bonus feature.


RNG is an abbreviation and stands for Random Number Generator. An RNG is used with every single slot game and digital table game here at Pure Win. The RNG ensures that each game round is random and unbiased.

Without an RNG, there would be a chance for patterns to form, where players would be able to predict and take advantage of the game. Using an RNG ensures that all players are given an honest and fair game.


RTP is yet another abbreviation and stands for Return To Player. The RTP of a game is a theoretical percentage of return that a game will give back to players. In short, it can be explained that if ₹100 is played at a slot with a 98% RTP, the player would get ₹98 back. 

However, RTP is based on thousands of spins, not just one, which means that there is no guarantee that you’ll get 98% of your funds back even after hundreds of spins. At the same time, hitting a big win can bring profit. Slots are, after all, games of chance.


The Scatter symbol is known as the key to bonus features in a slot. Scatter symbols will land more seldom than other symbols, and they aren’t paying in the same way as regular symbols. 

This symbol won’t pay at all in some slots, while other games will pay, depending on how many Scatters that land. Usually, landing at least three Scatters anywhere on the reels will trigger the game’s bonus feature.


A slot is a casino game where symbols need to land in a predefined formation to create a win. The slot was initially known as a slot machine, fruit machine, or a “one-armed bandit” due to the lever on the side of the machine.

Most of the online slots released today are so-called video slots. A video slot will have animations and movement in addition to the spinning of the reels.


Wild symbols are unique symbols that substitute for all other paying symbols in the game. 

Wilds can help create winning combinations, and it’s also common for them to have additional features.

However, Wilds will rarely substitute for Scatter or Jackpot symbols.

Colossal Wild

A Colossal Wild is a larger version of a wild. Instead of the symbol being 1x1 in size, a colossal can be 2x2, 3x3, 4x4, or even 5x5!

Depending on the video slot, regular paying symbols can also appear colossal.

Multiplier Wild

A Multiplier Wild will not only substitute for other symbols but will also multiply the win! In the Jammin’ Jars slot, wilds hop around on the grid with each win and receive an increased multiplier with each new hop.

Expanding Wild

As the name suggests, this Wild will spread when it lands. It’s common to see wilds that spread across the entire reel, as it does in Starburst.

Expanding Wilds can also expand diagonally or horizontally, depending on the game.

Walking Wild

Those hopping wilds in Jammin’ Jars are known as Walking Wilds, a feature first introduced in the James and the Giant Beanstalk slot from NetEnt. These wilds will move around on the reels.

It’s fairly common for Walking Wilds to be combined with a Respin feature.

Sticky Wild

As you might’ve guessed, a Sticky Wild will remain in its place when it lands. 

These wild symbols have the chance of creating guaranteed wins depending on where they land on the reels. 

For example, in Sticky Bandits, wilds can land so that wins are created every single spin during the free spin feature.

Winning mechanics

Throughout the years, new innovative ways of creating winning combinations have been invented by slot game providers. Today, we have a wide variety of games to choose from!


Paylines are the most common winning mechanic, and it’s also the oldest. Payline slots have reels with symbols. Horizontally across these reels are paylines. Landing identical symbols along a payline will create a win. 


With a ways-to-win mechanic, paylines are tossed out the window. Instead, wins will happen as long as identical symbols land on adjacent reels from left to right. In other words, they don’t have to land in any specific formation. 

As long as the symbol appears on the reels, they’ll give you cash. The ways-to-win mechanic creates a higher number of winning probabilities. Megaways™ is one such mechanic. 

Cluster Pays

If you’ve ever played mobile games where you need to match identical symbols in a cluster, you’ve already had experience with this win mechanic. 

In Cluster Pay slots, the game is played on a grid, where symbols need to land in a cluster for a win to occur.

Commonly, identical symbols have to land in clusters of five or more, connected vertically or horizontally. 

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