Quick answer
Cluster Tumble is a Relax Gaming slot (2021) with 96.4% RTP, very high volatility and a 20,000x max win. It uses cluster pays with free spins, wild symbols and tumbling reels. An official free demo is available. RTP can vary by casino.
Key specs
- RTP
- 96.4%
- Volatility
- Very high
- Hit frequency
- 20.29% (about 1 in 4.9 spins)
- Max win
- 20,000x
- Grid
- 8 reels
- Pays
- Cluster pays
- Released
- 3 November 2021
- Bet range
- $0.10–$50
- Jackpot
- None
Casinos with Relax Gaming games
- Aurivo Casino100% up to $1,000 + 200 Free Spins30x bonusCarries Relax GamingPlay at Aurivo Casino (opens in new tab)
18+. New customers. Min dep $20. 30x bonus wagering. Max bet $5. 30 days. 200 spins on Book of Dead at $0.20. Credited in daily batches of 20 over 10 days. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $20. 30x bonus wagering requirement. Max bet $5 while wagering. Free spins on Book of Dead at $0.20 per spin. Spins credited in daily batches of 20 over 10 days. Offer valid 30 days. Full T&Cs apply. Please gamble responsibly.
Check Cluster Tumble is in the lobby in your country.
Themes:
Part of the Cluster Tumble series.
Free demo Members
Try Cluster Tumble with play money before deciding whether to play for real. Official Relax Gaming demos are free for GambGenius members.
How to play Cluster Tumble (members only)
Wins pay for groups of matching symbols that touch horizontally or vertically. Larger clusters pay more, and winning clusters usually disappear to make room for new symbols.
Cluster Tumble is played on a 8 reels grid with cluster pays.
- Set your stake. Choose your total bet per spin between $0.10 and $50. Wins are paid as multiples of this stake.
- Check the paytable. Open the game's info screen to see what each symbol pays and the exact rules for this version.
- Spin. Each spin's result is decided by a certified random number generator, independent of previous spins.
- Trigger the bonus. Land the required scatter symbols to start the free spins feature.
The full Cluster Tumble guide: how winnings work, 4 features and 4 strategy tips
- Your stake plan: a $50 budget → about $0.12 a spin (very high volatility)
- What 96.4% RTP costs per $100 wagered: $3.60 on average
- 4 features explained: free spins, wild symbols, tumbling reels, cluster pays
- Stake plans for $20 to $250 budgets, checked against the $0.10 minimum bet
- 3 RTP versions compared: 96.4%, 94%, 90%
- 4 slots with the same style and a higher RTP (up to 98%)
- Strategy tips and a session planner for Cluster Tumble
Free · no card · 18+ only
Never sold · export or delete any time · What do members get?
How winnings work (members only)
What 96.4% RTP costs per $100 wagered, the 20,000x max win at a $1 stake
The top prize is capped at 20,000x your stake. On a $1 spin that is $20,000; on $0.20 it is $4,000. When the cap is reached the round usually ends immediately.
Because wins don't depend on lines, every symbol in view can count towards a pay. The paytable lists how many matching symbols each tier needs.
Because winning symbols tumble away and are replaced, one paid spin can produce a chain of wins. All of them count towards that spin's total.
What 96.4% RTP means
Expected return = stake × 96.4%
Over $100 of total bets, the long-run average loss is $3.60
RTP is a long-run average across millions of spins. Any single session can finish far above or below it, especially on a very high volatility game.
The published hit frequency is 20.29%, meaning roughly one spin in 4.9 returns something — though many of those wins are smaller than the stake.
Features explained (members only)
4 features explained: free spins, wild symbols, tumbling reels, cluster pays
Free spins
A bonus round of spins played at no cost to your balance, usually triggered by landing three or more scatter symbols. Wins during the round are added to your balance, and many games let you retrigger extra spins.
Wild symbols
Wilds substitute for regular paying symbols to help complete winning combinations. They do not normally replace scatter or bonus symbols.
Tumbling reels
After a win, the winning symbols are removed and new ones fall into their place. This can create several consecutive wins from a single paid spin. Also called cascades or avalanches.
Cluster pays
Wins are formed by groups of matching symbols touching horizontally or vertically, rather than along lines.
Strategy tips (members only)
- Size your stake to the volatility. Very high volatility means most spins lose and a large share of the return comes from rare big features. Treat it as entertainment with a strict budget and a stake of around 0.5% of your session budget or less. A simple rule: bring at least 400 spins' worth of budget, so a $50 budget suggests a stake of about $0.12.
3 more tips and a session planner
- Check which RTP version you're playing. Relax Gaming offers this game at 96.4%, 94%, 90%. Open the game rules at your casino and prefer sites running the 96.4% version.
- Bonus wagering: at 96.4% RTP, clearing $1,000 of wagering costs about $36.00 on average. Check the bonus terms, as some casinos exclude specific games. Run your numbers in the wagering calculator.
- Set limits before you spin. Decide your loss limit and session time in advance and stop when you reach either. No pattern or betting system changes the outcome of a spin.
More on this in slot RTP and volatility explained and bankroll management.
Does it fit your budget? (members only)
Stake plans for $20 to $250 budgets, checked against the $0.10 minimum bet
For very high volatility we suggest a budget of at least 400 spins. This is what that means for Cluster Tumble (bets from $0.10 up to a maximum bet of $50).
| Budget | Stake a spin | Bet range | Average cost of 400 spins |
|---|---|---|---|
| $20 | $0.05 | Below the $0.10 minimum bet | $0.72 |
| $50 | $0.12 | Fits | $1.80 |
| $100 | $0.25 | Fits | $3.60 |
| $250 | $0.62 | Fits | $9 |
Averages only: a short session can end far above or below them. Set a loss limit before you play.
RTP versions (members only)
3 RTP versions compared: 96.4%, 94%, 90%
Relax Gaming supplies Cluster Tumble in 3 RTP versions and each casino chooses which one to run. Over $1,000 of bets, the 90% version costs about $64 more on average than the 96.4% version.
| Version | Average cost per $100 wagered | Extra vs best |
|---|---|---|
| 96.4% (best) | $3.60 | — |
| 94% | $6.00 | +$2.40 |
| 90% | $10.00 | +$6.40 |
Open the game's rules or info screen at your casino to see which version it runs.
Seen a different version at a casino? How member RTP reports work
Same style, better RTP (members only)
4 slots with the same style and a higher RTP (up to 98%)
Slots with the same mechanic (cluster pays) and volatility (very high) as Cluster Tumble, with a higher published RTP. Casinos can still run lower versions of any of them.
Techno Tumble98% RTP · +1.6 pts
Lucky 8 Merge Up97.25% RTP · +0.85 pts
Wild Card Gang97.25% RTP · +0.85 pts
Lucky Ducky97.25% RTP · +0.85 ptsQuestions
Frequently asked questions
Who makes Cluster Tumble?
Cluster Tumble is developed by Relax Gaming and was released in 2021.
What is the RTP of Cluster Tumble?
The default RTP of Cluster Tumble is 96.4%. Relax Gaming also supplies versions at 94%, 90%, so check the game's info screen at your casino.
Is Cluster Tumble high volatility?
Cluster Tumble is rated very high volatility. Very high volatility means most spins lose and a large share of the return comes from rare big features.
What is the max win on Cluster Tumble?
The maximum win on Cluster Tumble is 20,000x your stake, which is $20,000 on a $1 spin.
Can I play Cluster Tumble for free?
Yes. GambGenius members can play the official Relax Gaming demo of Cluster Tumble free on this page. It uses play money only, so demo wins can't be withdrawn, and it is for players aged 18 and over.
Does Cluster Tumble have a bonus buy?
No bonus buy is listed for Cluster Tumble in the sources we checked.
Where can I play Cluster Tumble?
Aurivo Casino carries Relax Gaming games. Check Cluster Tumble is in the lobby in your country before you sign up. 18+ · New customers · T&Cs apply. Availability varies by country.
Where this data comes from
- relax-gaming.com Provider
- bigwinboard.com Slot database
Specs come from the provider's own site and 1 independent slot database. Casinos can run lower-RTP versions, so always check the game rules before you play.
Game artwork © Relax Gaming, shown to identify the game.
