Cluster Tumble
- RTP
- 96.40%
- Volatility
- HIGH
- Max win
- 20,000×
- Hit freq
- -
- Grid
- -
- Bet
- -
- Released
- 2021-11-03
A playable demo is not available in your region.
Our take
An 8×8 cluster-pays grid from Relax Gaming with tumbling reels, temple-raider theming, and stacking multipliers pushing toward a colossal 20,000× max win on 96.40% RTP.
Cluster Tumble is an 8×8 grid-based slot from Relax Gaming that swaps traditional paylines for cluster-pays mechanics. The 5-symbol horizontal matches and expanding reels mean wins can cascade and reels can grow mid-spin, creating momentum-building gameplay. The adventure theme—a female explorer in an ancient temple, inspired by Tomb Raider—is cohesive and visually polished, with cinematic intros and well-characterised supporting players.
The core appeal lies in the feature set: free spins come with unlimited stacking multipliers that can compound across multiple cascade rounds. Unlike many cluster games that cap multiplier growth, Cluster Tumble's multipliers can accumulate without ceiling, theoretically allowing single cascades to reach the full 20,000× potential in a single spin if multipliers align. Dynamic reels expand during the round, adding another layer of variance. The 20.29% hit frequency suggests decent base-game activity; players will see frequent wins, though most will be modest.
At 96.40% RTP and high volatility, Cluster Tumble is pitched at experienced players willing to endure long droughts for the chance at 5-figure payouts. The mechanic is complex but well-animated and intuitive to follow. Mobile performance is smooth, and the game supports buy-bonus features for players chasing the bonus round directly.
Pros
- Unlimited stacking multipliers in free spins allow theoretical 20,000× wins in a single cascade
- Dynamic expanding reels and cascading mechanics create momentum and visual variety
- 20.29% hit frequency keeps base game engaging without constant drought periods
- High-quality visuals, soundtrack, and Tomb Raider-esque theming elevates presentation
Cons
- 8×8 grid is complex; new players may find cascade mechanics overwhelming at first
- Hit frequency of 20.29% means 80% of spins are non-wins; high volatility can feel punishing
- Free-spin frequency not disclosed; bonus rounds may be rare, extending losing streaks
- Max-win probability data missing; cannot assess odds of reaching 20,000× realistically
Math & maxes
Math breakdown
- Volatility score
- 3 / 5
- Max win
- 20,000x the stake
Gameplay video
Videos open in-place on click. Some uploaders disable embedded playback — those will redirect to YouTube.
FAQ
What is cluster pays and how does it differ from paylines?
Cluster pays require 5+ identical symbols to touch horizontally or vertically; wins do not follow fixed paylines, allowing more flexible matching.
How do the expanding reels work?
During free spins, the grid can grow beyond 8×8, adding more rows or columns and increasing win potential during cascades.
Can multipliers go beyond 20,000×?
No. 20,000× is the hard ceiling. Multipliers stack until they hit this limit.
What's the minimum and maximum bet?
Minimum €0.10, maximum €50 per spin.
Is there a buy-bonus feature?
Yes. Players can purchase entry into the free-spins round directly, bypassing the natural trigger.
How often do free spins trigger naturally?
Free-spin frequency is not disclosed in available data. Expect them to be less common than in low-volatility slots.
