Kluster Krystals Megaclusters Slot Review

The Kluster Krystals Megaclusters slot is powered by Relax Gaming and uses the Megaclusters mechanic from Big Time Gaming. Played on a 5x5 grid, wins are formed by landing clusters of 8+ symbols. When you win, you get tumbles for successive wins as well as symbol upgrades. Wild multipliers also upgrade when next to a winning cluster up to 10x. With 3 mini features available, there’s a Free Spins feature where you can upgrade bonus symbols for unlimited free spins. With an RTP of 96.49%, find out more in our Kluster Krystals Megaclusters review.

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Kluster Krystals Megaclusters Slot RTP, Details & Wager Limits

The Kluster Krystals Megaclusters slot is played on a 5×5 grid. Using the Megaclusters mechanic from Big Time Gaming, you need to form clusters of adjacent symbols to land winning combinations. A minimum of 8 symbols is needed to form a winning cluster. As expected, the more symbols in a cluster, the bigger the payout.

You can play this game from 10p to £100 a spin catering to all pockets. There’s an Autoplay function where between 10 and 1,000 autospins can be chosen. With an infinity option available, you can add loss limits, win limits and single win limits if desired.

Stakes range from between 10p and £20 per spin. Use the + and – tabs below the reels and adjust to suit. Autoplay is available if required too. You can set between 10 and 1,000 autospins or leave them running indefinitely. Adjust the sliders to set win and loss stop limits. There’s also a quickspin mode if you want to liven up the pace.

The Kluster Krystals Megaclusters RTP is 96.49% which is above the slot average. The hit frequency is 21.39% which means over a fifth of spins will result in a winning cluster. The max win is 9,921.7 x your total stake per spin.

Theme – Audio & Design Features – hypnotising experience


The Kluster Krystals Megaclusters slot is based on crystals, or krystals in this case. Set at night, the reels are encased by stone pillars. You’ll also see what appears to be the Northern Lights in the sky. Visually, its quite simple. The soundtrack is quite futuristic yet mystical. It has a hypnotic quality which will remind you of slots like Starburst.

Symbols include 5 different coloured krystals. You have a green, blue, purple, pink and orange krystal. The orange krystal is the most lucrative symbol with 20 in a cluster paying 50 x your total stake.

As you will expect, Kluster Krystals Megaclusters is available to play on mobile, tablet and desktop devices. The simple grid and high definition graphics work well on smartphones with the stone pillars framing the action nicely.

Kluster Krystals Megaclusters Bonus Features

The Kluster Krystals Megaclusters slot comes with a total of 7 bonus features. Winning clusters will upgrade symbols and wild multipliers. There’s also 3 random Mini features and a free spins game where all the other features apply.

Tumble feature

When you form a winning cluster, the Tumble feature applies. Winning symbols in the cluster explode with remaining symbols dropping into the vacated spaces. With the adjacent symbols upgrading (more info below), new symbols drop in to fill the new empty spaces for another chance of winning. The avalanches continue until no more new wins are formed.

Symbol Upgrade feature

All symbols come in 4 different forms. They will appear as singles, doubles, triples or quads. When symbols are next to a winning cluster, the Symbol Upgrade feature is triggered.

The symbols will then be upgraded to the next size, for example: Singles → Doubles → Triples → Quads

Multiplier feature


There are also wild multipliers which land with 1x, 2x, 3x, 4x, 5x and 10x as their base multiplier. When multipliers appear next to winning clusters, they are upgraded too, like the normal symbols.

For every upgrade, the multiplier increases with an equal amount to the corresponding base multiplier. Each multiplier can be upgraded 3 times. This is known as the Multiplier feature.

Mini features

Kluster Krystals Megaclusters comes with 3 random mini features. They are guaranteed to be triggered after a sequence of 6 avalanches. Here’s what to expect:

Krystal Vanish feature 1 symbol group (colour) is chosen and removed from the grid
Krystal Boost feature this upgrades all visible normal symbols by 1 stage
Krystal Kut feature this removes all visible single normal symbols

Free Spins feature


The Free Spins feature is triggered by upgrading the bonus symbol fully to quad size. This happens when the bonus symbol is next to a winning cluster.

With 7 free spins awarded, you can upgrade a bonus symbol fully in the feature. This retriggers the feature to give you an additional 4 free spins. There’s no limit to how many free spins you can play with. As in the base game, you can benefit from multipliers up to 10, the mini features, tumbles and symbol upgrades.

Kluster Krystals Megaclusters Review Summary – a must-play 

The Kluster Krystals Megaclusters slot is different to other Megaclusters slots from Big Time Gaming. Visually quite simple, the gameplay has a mesmerising quality to it like NetEnt’s Starburst.

The key to big wins is from the wild multipliers which can reach 10x. With a high RTP of 96.49%, it has plenty of bonus features to keep the action ticking along nicely.

It’s the first non-Big Time Gaming Megaclusters slot and Relax Gaming have done a good job to make it different from the 2 previously released games, Star Clusters Megaclusters and Cyberslot Megaclusters.

Kluster Krystals Megaclusters FAQs

What is the Kluster Krystals Megaclusters RTP?

The Kluster Krystals Megaclusters return to player rate is 96.49% which is higher than most slot games (96% average). The variance is in the high category with the bigger wins coming from the various bonus features.

What is the Kluster Krystals Megaclusters max win?

The maximum win per spin is 9,921.7 x your total stake. It comes with a 21.39% hit frequency rate so you’ll get wins pretty often.

Is there a Kluster Krystals Megaclusters free spins feature?

Yes. The Free Spins feature begins with 7 free spins. With unlimited free spins available, there are tumbles, symbol upgrades, mini features and multipliers up to 10x.

How does the Megaclusters engine work?

Clusters are formed by landing a minimum of 8 symbols adjacent to one another. The bigger the cluster, the bigger the payout. When you form clusters, adjacent symbols are upgraded and multipliers of the wilds are increased.

Kluster Krystals Megaclusters Slot Information

  • Game:
    Kluster Krystals Megaclusters
  • Provider:
    Relax Gaming
  • Type:
    Megaclusters Slot
  • Reels:
  • Paylines:
  • Stakes Range:
    10p to £100
  • Bonus Features:
    Yes (7)
  • Free Spins/Multiplier:
  • RTP %:
  • Max Win:
    9,921.7 x stake
Review by Chris Taylor

Review by Chris Taylor

Chris is a slots expert that has reviewed and played over 4,000 online slots. Having being in the iGaming industry for over 16 years, he knows how slots work, how bonus features are triggered and how the RTP and variance affect the gameplay.