Cluster Tumble

Cluster Tumble

The Cluster Tumble slot game is the fifth edition of the adventure-themed Tumble series from Relax Gaming. It features a daring female explorer on the ultimate search and rescue mission for her missing husband. This Cluster Tumble slot review gives you an overall breakdown of what to expect, which symbols correspond to greater wins and much more. So if you want to know how to win up to x20,000 your wager, keep reading this Cluster Tumble review.

Rating: 82% | Made By Relax Gaming | Reviewed On

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An Introduction to Cluster Tumble

The Cluster Tumble slot game is set in the thick groves of the Himalayan mountains. Its grid is made up of eight reels and eight rows.

Cluster Tumble Slot Layout
Cluster Tumble Slot Layout

A backdrop of citadel walls, foreboding skulls on the ground and a pair of totem-filled columns complete the game’s setting.

Relax Gaming, the game’s developers, included brief movie-like sequences that set the tone for the spins. The game begins with a female explorer climbing up a mountain before encountering a massive gate. At this point, the game transitions to the main slot reel setup.

Betting and Layout

The grid layout has eight reels and eight rows. At the start of each spin, between 15 and 18 of the symbols on the reels actually pay. This number varies as the game goes along. The remaining stone tiles are blocker tiles, which are eliminated when winning clusters form next to them.

In the default game mode, Cluster Tumble RTP is set at 96.40%, rising to 96.47% when purchasing standard free spins. It is 96.57% for the more volatile free spins option. The slot offers less frequent winning combinations but a maximum jackpot of x20,000, symbolising high slot volatility.

You can bet as little as 0.1 credits per spin and as much as 50 credits. Additionally, exciting special stone blocks reward you with multipliers when you trigger the free spin. In the background, an adventure-style soundtrack and movie-like scenes keeps you engaged throughout the game.

Key Information

Developer Relax Gaming
RTP 96.40%
No. Reels 8
No. Rows 8
Volatility High
Min. Wager 0.10
Max. Wager 50
Max. Payout 20,000x

Gameplay and Features

Players can purchase the free spins feature in select territories, excluding the United Kingdom. There are two options available for you to choose from.

  • The first option is a standard round of five free spins for the cost of 100x your wager. The Cluster Tumble RTP increases slightly to 96.48% from 96.4%.
  • The second option rewards you with five volatile free spins. The cost of this is 200x stake with the RTP increasing to 96.57%.

In return, the value of the potential multipliers when you use the free spins begins at 6x. This increases by six for each following trigger, to 12x, 18x and so on.

Cluster Tumble Playing Mode
Cluster Tumble Playing Mode

Regular Symbols

Gems in the colours blue, green and red are the lower-paying symbols. If you land a minimum of four of the same, you are rewarded with 0.3x your wager. Meanwhile, landing 40 or more of the same symbol multiplies your stake by 50.

The higher paying symbols are a mask, a scarab and a mountain lion. When you land a minimum of four, you will be rewarded with 0.4x your wager. While landing 40 or more of the same symbol pays between 100x and 2,000x your stake.

Scatter Symbols

The game’s scatter symbol is a blue gem encased in gold with a skull on top. Landing 3 or more anywhere on the grid in one spin triggers the free spin feature. Additionally, finding any scatter symbol during free spins will award an additional free spin.

Cluster Tumble Free Spins
Cluster Tumble Free Spins

Free Spins

There are two ways to activate the Free Spins feature.

  • Landing three or more scatter symbols anywhere on the grid in the same spin.
  • Clearing the reels.

You are rewarded with five free spins and a 3x win multiplier if either of these things happens. The win multiplier will grow by multiples of 3 each time you clear the reels – 6x, 9x, 12x and so on. When a multiplier is turned on, it either stays the same or increases. It doesn’t go back to 1x until you return to the base game.

Additionally, when the free spin feature is activated, one extra free spin is added to your total each time a scatter symbol lands on the grid. This could result in an endless number of free spins.

Wild Symbols

Wild symbols are a red ‘W’ on a golden block. They often carry numbers representing lives. When a wild lands, it can have up to five lives, decreasing as it participates in combinations. It is typically used to create more winning combinations by substituting for other symbols.

Another symbol is the Lightning Win which transforms into a regular pay symbol. It rewards you with a win no matter where it is located on the board. A final notable symbol in Cluster Tumble is the Fire Transform symbol which turns into a random pay symbol.

How to Win at Cluster Tumble

As with other high volatility slots, Cluster Tumble requires patience. The trick to winning is to landing high paying symbols either horizontally or vertically. Utilising the volatile bonus buy option also rewards you with an increased multiplier that is sure to help you win big.

It’s advisable to play Cluster Tumble free at any of our top-rated casinos found within this review, to get a feel for how to play this slot. These sites offer great bonuses which can be used to win real money, as well as practice playing.

Cluster Tumble Epic Win
Cluster Tumble Epic Win

Payout Structure for Cluster Tumble

Clusters pay up to 2,000x wager depending on the number of symbols matched and the type. Unlocking all the stone blocks on the grid rewards you with a 3x multiplier boost. Repeating the process increases the multiplier by multiples of 3.

You will be awarded a multiplier boost that increases by multiples of 6 when you purchase the volatile free spins. Other features that boost your rewards are Wild Symbols, Lightning Win and Fire Transform.


This video slot by Relax Gaming transports you to the Himalayas, potentially rewarding you with wins of up to x20,000 into the bargain. Its storyline is captivating and the soundtrack adds an extra depth to your spins, no to mention the quality sound effects from the falling blocks.

To discover this adventurous world and stand a chance to win big rewards, play at one of our recommended casinos found on this page. Just like with this Cluster Tumble review, we have tested each one and can highly recommend them. They offer generous welcome bonuses, convenient payment methods and top notch customer support. Get involved today.


Who makes the Cluster Tumble slot game?

Relax Gaming developed this online slot as the fifth addition to their “Tumble” series.

Where can I play Cluster Tumble?

You can play Cluster Tumble at any of the recommended online casinos listed on our website.

What is the max win of Cluster Tumble?

The maximum win while playing Cluster Tumble is 20,000x your wager.

What is the volatility of Cluster Tumble?

The volatility of Relax Gaming’s Cluster Tumble slot is high.

Can I play Cluster Tumble for free?

You can play Cluster Tumble free using the recommended websites listed on this page. They offer a freeplay demo at no cost before you invest real money.

Does Cluster Tumble have a free spins feature?

As explained in this Cluster Tumble slot review, you can activate the free spins feature by landing three or more scatters, or by clearing the reels.

Can I play Cluster Tumble on my mobile or tablet?

The game makes use of HTML5, making it compatible with desktop, mobile and tablet devices. It can be enjoyed on any operating system.

Which online casinos have Cluster Tumble?

Use the list of Cluster Tumble casinos to see all online casinos that have Cluster Tumble. We filter the casino top list to only show Cluster Tumble casinos that accept players from your location.

What is the Return to Player (RTP) for Cluster Tumble?

The Cluster Tumble RTP is 96.40%. An RTP of 96.40% puts Cluster Tumble among slots with an average Return to Players. To be a high RTP slot it would have to be 98% or more.