What is the Cluster Pay feature in slot machines?

Cluster Pay dice slots change the way winning combinations are formed. Instead of relying on paylines, they reward groups of matching symbols on a grid. This mechanic is often accompanied by cascading wins, multipliers and special symbols.

The Cluster Pay mechanic

For a long time, slot machines operated according to a simple principle: landing several matching symbols along a predefined payline. The Cluster Pays system breaks away from this structure by removing the need to align symbols along a specific path.

Instead, the exact position of the symbols matters less than how close they are to one another. Several matching symbols can form a winning combination when they touch horizontally or vertically, provided the minimum number required by the game is reached.

The minimum number of matching symbols varies from one slot to another. Some require four identical symbols, while others require five or more. Diagonal connections generally do not count.

How does a Cluster Pays slot work?

The gameplay remains similar to that of a traditional slot machine. Players select their bet, spin the reels and watch the symbols appear on the grid.

The difference lies in how winning combinations are determined. In a traditional slot, symbols must appear along the paylines specified in the game rules. With Cluster Pays, they must form a continuous group by touching along their sides. This cluster does not need to extend across the entire grid. Each symbol simply needs to be connected to the others through a sequence of horizontal or vertical connections.

Payouts increase with the size of the cluster, according to the slot's paytable. A large group of matching symbols may therefore produce a higher payout than a smaller cluster. However, it is important to distinguish between the size of a cluster and its actual value. Not all symbols necessarily have the same value, and each slot applies its own payout rules.

Cascading wins in slot machines

One of the most noticeable features of Cluster Pays slots is their frequent use of cascading mechanics. When a winning cluster appears, the symbols involved disappear from the grid. The symbols above them then fall into the empty spaces, while new symbols may appear to complete the grid.

This process can create a second winning cluster without requiring another bet. If a new winning combination appears, the process repeats. The winning symbols are removed, the remaining symbols shift into position and a new arrangement is formed.

A single spin can therefore produce several consecutive wins. However, the cascading mechanic does not guarantee that another winning combination will appear. Each rearrangement may also end without an additional payout.

Some games add progressive multipliers to these sequences. Their values may increase as multiple cascades occur, boosting payouts according to the specific rules of the slot.

Does Cluster Pays really increase your chances of winning?

Simply replacing paylines with clusters of symbols does not automatically make a slot more favourable to players. Two slot machines using different systems may have comparable mathematical characteristics.

To evaluate how they work, it is important to consider factors such as RTP and volatility. Cluster Pays slots can fall into different volatility categories. Their dynamic appearance alone is therefore not enough to determine their level of risk.

3 slots that showcase different possibilities

Several slot machines featuring the Cluster Pay mechanic are available at PepperMill Casino.

Sugar Rush Dice (Pragmatic Play)

Step into a delicious world with Sugar Rush Dice, a candy-themed slot developed by Pragmatic Play! This game transports you to a colourful universe filled with sweets, gummy bears and pastel-coloured treats, where every spin brings new surprises.

Played on a 7x7 grid, the concept is simple: form clusters of at least five matching symbols connected horizontally or vertically to create winning combinations. Thanks to the cascading system, winning symbols disappear and make way for new candies, giving you the opportunity to land multiple wins during a single spin.

But that's not all! Sugar Rush Dice also features multipliers of up to 128x, along with a Free Spins feature that allows multipliers to accumulate on specific grid positions. With an RTP of 96.5%, very high volatility and potential wins of up to 5,000 times your bet, this game combines simplicity, dynamic gameplay and suspense.

Treasure Quest Dice (TaDa Gaming)

Set off in search of hidden jungle treasures with Treasure Quest, an exciting slot developed by TaDa Gaming! Explore a mysterious world inspired by Aztec temples. Thanks to the cascading system, winning symbols disappear and are replaced by new ones, allowing multiple consecutive wins within a single spin.

Treasure Quest stands out thanks to its five magical orbs, each with special powers. Depending on their colour, they can transform certain symbols into Wilds, remove low-value symbols or introduce impressive Mega Symbols measuring up to 5x5. These features add an extra dimension to the gameplay and can significantly change how a spin unfolds.

The game also includes a unique bonus feature that activates when you collect 200 winning symbols during a single cascade sequence. Once the bonus is triggered, you can progress through different levels and benefit from increasing multipliers of up to 10x.

The game has a theoretical RTP of 97.04%, medium-high volatility and potential wins of up to 2,000 times your bet.

Lava Gold (Betsoft)

Travel back in time to the age of dinosaurs with Lava Gold, a prehistoric slot from Betsoft. Discover a lush jungle dominated by an active volcano, where impressive dinosaurs, mysterious eggs and prehistoric plants accompany you on an explosive adventure.

Lava Gold stands out thanks to its Lava Meter, a special meter that gradually fills as you form winning combinations with different symbols in the game. Once the meter is full, you unlock a series of 10 Free Spins packed with special features.

During these Free Spins, the central column of the grid displays five matching symbols, guaranteeing a winning combination on every spin. A progressive multiplier also comes into play: it starts at 1x and increases with each spin, reaching 10x on the final Free Spin.

With an RTP of 95.99%, medium volatility and bets ranging from €0.25 to €150 per spin, Lava Gold combines accessible mechanics, original features and an immersive prehistoric atmosphere.

Try Cluster Pay slots

PepperMill Casino offers free demo versions of its online slots, allowing you to learn all about the Cluster Pay system. When you're ready to play with real money, take advantage of boosts and missions.