Kluster Krystals Megaclusters (Relax Gaming) Slot Review

Kluster Krystals Megaclusters: Slot Overview 

When Big Time Gaming’s Megaclusters mechanic made its debut, it was only a matter of time before other studios jumped into the fray. Among the first to take up the challenge was Relax Gaming, with their own twist in Kluster Krystals Megaclusters, released on January 12, 2021. But rather than simply mimicking BTG’s Star Clusters or Cyberslot, Relax aimed to create a game that reinterprets the mechanic with their own flavor. 

Kluster Krystals Megaclusters is set on a 5×5 grid and utilizes cluster pays instead of traditional paylines. With an RTP of 96.49%, high volatility, and a max win of 9,921x your stake, it offers an engaging mix of mechanics built around upgrading symbols and cascading avalanches. Unlike BTG’s approach, which often leans into sci-fi, Kluster Krystals feels more like a prehistoric puzzle or glowing gem simulator set under the aurora borealis. 

While it borrows the bones of the Megaclusters system, the execution here is entirely Relax Gaming, offering a tightly packed, intuitive slot that blends cluster payouts with evolving visuals and intense momentum.

Design and Graphics 

The game is visually cosmic, with a distinct glowing crystal aesthetic. The transparent 5×5 reel grid is framed by two stone towers, set against a night-sky backdrop with the aurora borealis rippling overhead. This gives Kluster Krystals a mystical, otherworldly vibe that contrasts the futuristic sheen of other Megaclusters titles.The symbols are richly colored gemstones—purple, pink, orange, green, and blue—all with a glossy, almost radioactive glow. Each one can appear in single, double, triple, or quad form, depending on upgrades mid-spin. These dynamic changes add visual variety and clarity to the evolving gameplay. 

The interface is clean and minimalistic, with the game information neatly tucked around the grid. Visual transitions during avalanches and symbol upgrades are fluid and polished, giving the impression of a living, breathing machine where no two spins feel quite the same.

Gameplay Mechanics 

The core mechanic of Kluster Krystals Megaclusters is deceptively simple but layered with complexity. Wins occur when at least 8 identical symbols form a cluster—horizontal or vertical. Once that happens, the avalanche mechanic kicks in: the winning symbols disappear, and new ones drop down to fill the grid. 

Here’s where the Megaclusters element comes into play. Each position on the board can host: 

A single, double, triple, or quad version of a symbol. 

As wins occur, nearby symbols upgrade—singles become doubles, doubles become triples, and so on. 

The result is a progressively crowded grid with more matching symbols and bigger cluster potential. 

This means even a seemingly minor win can snowball into a cascade of upgrades and fresh clusters, creating gameplay that’s as much about momentum as chance. 

Additionally, multipliers are tied to certain symbols and can reach up to 10x, significantly increasing win potential when involved in a cluster. 

The math model is high volatility, making this an “all or nothing” slot. Dry spells can last, but when it hits, the screen erupts into chain reactions and soaring multipliers.

Sound and Music 

The soundtrack in Kluster Krystals leans into cosmic ambiance. It’s not overbearing, but it’s thematically consistent—swelling synths, reverberating tones, and a background hum reminiscent of electricity or energy flowing through crystals. 

Relax Gaming has clearly taken inspiration from titles like Flower Fortunes Megaways, opting for a mystical sci-fi tone that enhances the visuals without becoming intrusive. Sound effects tied to wins, avalanches, and upgrades are satisfying and help accentuate the game’s energetic flow.

Bonus Features 

Kluster Krystals Megaclusters packs a handful of clever features that complement the base mechanic well:Avalanche & Symbol Upgrade 

Each winning cluster triggers an avalanche, clearing the cluster and allowing new symbols to drop in. While this happens: 

Adjacent non-winning symbols are upgraded. 

A single becomes a double, a double becomes a triple, and so on. 

Upgraded symbols increase win probability and are key to larger payouts. 

Multipliers 

Certain symbols have attached multipliers—1x, 2x, 3x, 4x, 5x, or 10x. 

These multipliers can also be upgraded during avalanches (up to 3 times). 

At the end of the avalanche sequence, any multiplier involved in a win is added to the total payout. 

Random Mini-Features 

After 6 consecutive avalanches, one of three Krystal Features triggers: 

Krystal Vanish – Removes one entire group of colored symbols from the grid. 

Krystal Boost – Upgrades all visible symbols by one stage. 

Krystal Kut – Removes all single-stage symbols. 

These features help refresh the grid and add momentum when gameplay slows. 

Free Spins 

Triggered by the bonus symbol: 

Each bonus symbol must be fully upgraded (4 segments) to activate. 

Once full, 7 free spins are awarded. 

Filling additional bonus symbols during free spins grants +4 extra spins. 

During free spins, the mechanics are the same, but the frequency of upgrades and multipliers feels enhanced, boosting the excitement and potential for massive wins.

Betting Options and Payouts 

Kluster Krystals is accessible to all types of players, thanks to a flexible betting range: 

Min Bet: €0.10 

Max Bet: €100 

Key Stats: 

Reels/Rows: 5×5 Grid 

Paylines: Cluster Pays (8+ symbols) 

RTP: 96.49% 

Volatility: High (5/5) 

Hit Frequency: 21.39% 

Max Win: 9,921x your stake 

Cluster wins can reach 20x to 50x your stake for the top-paying symbols in groups of 20. Combined with upgraded multipliers, the potential to score several thousand times your bet in one spin chain is very real—though, as with any high-volatility title, patience is essential.

Conclusion 

Kluster Krystals Megaclusters is a bold and innovative title that reinterprets the Megaclusters mechanic in a distinctly Relax Gaming way. Rather than copying BTG’s blueprints, Relax carved their own lane—emphasizing symbol upgrading, grid evolution, and momentum-driven wins over sheer chaos. 

The game thrives on its ability to turn small wins into massive ones through upgrades, multipliers, and chain reactions. The lack of wilds may seem unusual, but it forces players to rely on mechanics that reward patience and strategy. The visual clarity, tight math model, and smooth UX make this one of Relax’s most refined cluster-based games. 

That said, its high volatility and “all or nothing” feel may deter casual players or those expecting quick wins. For seasoned slot fans, however, Kluster Krystals offers deep satisfaction, great pacing, and the joy of watching a small cluster snowball into a grid-clearing crystal storm.