Best Cluster Pays Slots and Casinos to Play Them (2026)
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What Are Cluster Pays Slots and How Do They Work?
Traditional slots typically follow fixed paylines, with wins formed from left-to-right, but cluster pays slots flip that on its head.
Rather than traditional paylines, cluster pays slots play out on a grid. You’ll commonly find square layouts in cluster pays slots, following patterns like 5×5, 6×6, 7×7 and 8×8 grids, or even bigger game matrixes.
Wins are formed by a group of matching symbols touching each other horizontally or vertically. The minimum cluster size varies from game to game but five is usually the magic number, though some titles ask for eight and others for six.
Cluster pays games usually pair the grid with cascades, also called avalanches or tumbles. When a cluster pays, the winning symbols are removed and new symbols drop into the gaps, which can chain several wins from a single spin.
Many games also add multipliers that grow with each cascade, so a long chain can build into a far bigger payout than the first cluster alone.
The format traces back to Aloha! Cluster Pays by NetEnt, released on 22 March 2016, widely credited as the first cluster pays slot. It played on a 6×5 grid with no paylines, Sticky Win re-spins, tiki masks, and symbol drops, setting the basic gameplay loop that later grid slots followed.
Who Makes Cluster Pays Slots?
NetEnt
Play’n GO
Push Gaming
More Providers Behind the Cluster Pays Mechanic
The three studios highlight above have made a name for themselves in the world of cluster pays slots, but they’re far from the only developers experimenting with this popular mechanic.
While some slot providers may specialise in grid-based gameplay, other prefer to mix it up by trying out fixed lines, scatter pays, and cluster pays across their catalogues.
For some studios, cluster paying releases make up just a handful of releases, but that doesn’t make them any less worthy of attention.
In fact, some of the industry’s most creative developers have put their own spin on the cluster pays mechanic, combining it with interesting themes, cohesive mechanics, and exciting features.
Below, you’ll find a few more of the best cluster pays slots and the talented providers behind them!
New Cluster Pays Slots
The world of cluster pays slots is constantly changing as more developers find unique ways to have fun and experience with this popular mechanic.
There’s a steady influx of new releases that utilise this mechanic, with each game bringing something different to the table.
Below, you’ll find some of the latest cluster pays slot releases, giving you a chance to explore what’s new and see how developers are keeping this popular mechanic fresh and exciting.
If you’re interested in knowing what other games are on the horizon, you can check out our automatically-updating Slots Calendar which shows upcoming releases over the next few months.
Most Iconic Cluster Pays Slots
With their cascades, multipliers, and easy-to-follow grid-based layouts, cluster pays slots have really exploded in popularity since the release of Aloha! Cluster Pays in 2016.
Without traditional paylines to worry about, winning combinations can form anywhere on the grid, making the gameplay feel more dynamic, especially when one cluster can trigger a chain reaction of cascading wins.
Over the years, certain releases have become synonymous with the mechanic, earning a special place in the hearts of slot enthusiasts and helping shape the genre as we know it.
These aren’t necessarily our picks for the best cluster pays slots, but rather some of the most iconic and recognisable games that put this popular mechanic on the map.
Reactoonz – Play’n GO
Moon Princess – Play’n GO
Le Bandit – Hacksaw Gaming
Cluster Tumble – Relax Gaming
Jammin Jars – Push Gaming
Biggest Max Wins on Cluster Pays Slots
One of the most exciting things about cluster pays slots is how quickly a single spin can snowball into something bigger.
With winning clusters disappearing, fresh symbols tumbling into place and multipliers building throughout a cascade sequence, there’s plenty of potential for unexpected combinations.
Taking that into stride, certain cluster pays games boast theoretical maximum wins worth tens of thousands of times your stake, making them a prime target for players in search of big rewards.
Below, we’ve rounded up five of the biggest maximum wins available on cluster pays slots according to our database.
Which Cluster Pays Slots Have The Highest RTPs?
Huge maximum wins are all well and good, but what about the maths behind the games?
Cluster pays slots aren’t just about explosive cascades and impressive multipliers, with some offering particularly competitive Return to Player (RTP) percentages, often above the industry average.
This statistic may be especially important to players seeking the best potential returns, though this figure is never a guarantee. It’s also worth remembering that some providers offer multiple RTP configurations, so the percentage advertised on one casino might differ from another.
To save you time searching through each release and gamesheet, we’ve picked out some of the highest RTPs attached to cluster pays slots.
Space Knight Merge Up 2
BGaming
Le Vampire
Hacksaw Gaming
Rage of Egypt
Hacksaw Gaming
Frenzy Clusters
BGaming
Cluster Pays Slots FAQs
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What are cluster pays slots?
Cluster pays slots are games played on a grid rather than on reels with paylines, which is why they are also called grid slots. -
How do cluster pays slots work?
Matching symbols that touch horizontally or vertically form a cluster and pay out – usually requiring five or more symbols. The winning symbols are then usually removed in a cascade, with new symbols dropping in that can form further clusters. Many games add multipliers that grow with each cascade in the chain. -
What was the first cluster pays slot?
Aloha! Cluster Pays by NetEnt, released on 22 March 2016, is widely regarded as the first cluster pays slot. -
Which providers make cluster pays slots?
NetEnt, Play’n GO, Push Gaming, Pragmatic Play and Hacksaw Gaming are among the studios associated with cluster pays games. NetEnt’s Aloha! Cluster Pays popularised the mechanic, while Push Gaming’s Jammin’ Jars and Play’n GO’s Reactoonz are among its best known examples. -
Are cluster pays slots the same as grid slots?
In practice the two terms refer to the same thing, since cluster pays games drop the reels and paylines in favour of a symbol grid. Typical layouts include 5×5, 6×6, 7×7 and 8×8 grids, along with the 6×5 grid used by some games. -
Do cluster pays slots have paylines?
No, paylines are replaced by clusters of matching symbols. Symbols pay wherever they form a connected group on the grid, horizontally or vertically, rather than landing on set lines. -
Are cluster pays slots better than Megaways?
Neither is better, as the two mechanics simply work differently. Cluster pays games use grids and cascades, while Megaways games change the number of ways to win on each spin. The volatility and rules of the specific game are a better guide than the mechanic behind it. -
What is the best cluster pays slot?
Some of the best cluster pays slots include Jammin’ Jars by Push Gaming and Reactoonz by Play’n GO. This does ultimately come down to your personal preferences, though – this page featured our 10 highest-rated cluster paying slots and five of the most iconic games with the grid-based mechanic. -
Which cluster pays slots have the highest RTPs?
Some cluster pays slots have competitive RTPs sitting above 96%, with some of the highest RTPs coming from Space Knight Merge up 2 (98%), Le Vampire (97.57%), and Rage of Egypt (97.49%). Be aware that some casinos can field alternative RTP configurations, so always check the information panel before playing. -
Can I play cluster pays slots for free?
Yes! Many cluster pays slots are available in free demo mode, allowing you to experiment without risking real money.
Final Thoughts on Cluster Pays Slots
With their dynamic grids, cascading wins, and creative features, cluster pays slots offer a refreshing change of pace from conventional reel-based gameplay.
And with every developer having at least one cluster pays slot in their wheelhouse, there’s plenty of variety for players to explore, with games coming in all shapes, sizes, and themes to suit all main preferences.
Some even feature bonus buy options for accessing their special rounds directly, though these aren’t available to purchase at UKGC-licensed casinos.
Ultimately, we’d recommend choosing a cluster paying game based on its RTP, volatility, and gameplay features as a whole, rather than bee-lining for the one with the biggest maximum win.
You can take this guide as a starting point to find our recommended cluster pays games, use our free slot demos to explore the mechanics, and browse our slot reviews for a closer look at individual releases.
As always, remember to gamble responsibly, stick to a budget, and never chase loses. For further guidance and support, visit our Responsible Gambling page.
Alex Renshaw
Slots Reviewer
Maya Sattar
Head of Content