Quick answer
Star Clusters 2 is a Big Time Gaming slot (2025) with 96.63% RTP, high volatility and a 34,500x max win. It uses cluster pays with tumbling reels, expanding reels and free spins. RTP can vary by casino.
Key specs
- RTP
- 96.63%
- Volatility
- High
- Max win
- 34,500x
- Pays
- Cluster pays
- Released
- 3 September 2025
- Bet range
- $0.20–$5
- Jackpot
- None
Not published by the provider: grid
Casinos with Big Time Gaming games
- Solstice Spins50 Free Spins No Deposit + 100% up to $50035x bonusCarries Big Time GamingPlay at Solstice Spins (opens in new tab)
18+. New customers. Min dep: none for the free spins; $20 for the match bonus. 35x bonus wagering. Max bet $5. 14 days. 50 spins on Starburst at $0.10. Spin wins capped at $100. Full T&Cs apply.
Key terms
18+. New customers only. No deposit needed for the free spins. Min deposit $20 for the match bonus. 35x bonus wagering requirement. Max bet $5 while wagering. Free spins on Starburst at $0.10 per spin. Max win from free spins $100. Offer valid 14 days. Full T&Cs apply. Please gamble responsibly.
Check Star Clusters 2 is in the lobby in your country.
Themes:
Part of the Star Clusters series.
How to play Star Clusters 2 (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.
Star Clusters 2 pays with cluster pays.
- Set your stake. Choose your total bet per spin between $0.20 and $5. 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.
- Optional bonus buy. Where permitted, pay a fixed price to start the bonus directly.
The full Star Clusters 2 guide: how winnings work, 6 features and 5 strategy tips
- Your stake plan: a $50 budget → about $0.17 a spin (high volatility)
- What 96.63% RTP costs per $100 wagered: $3.37 on average
- 6 features explained: tumbling reels, expanding reels, free spins, multipliers, bonus buy and 1 more
- Bonus-buy risk breakdown
- Stake plans for $20 to $250 budgets, checked against the $0.20 minimum bet
- 3 RTP versions compared: 96.63%, 94.6%, 86.49%
- 4 slots with the same style and a higher RTP (up to 98.18%)
- Strategy tips and a session planner for Star Clusters 2
Free · no card · 18+ only
Never sold · export or delete any time · What do members get?
How winnings work (members only)
What 96.63% RTP costs per $100 wagered, the 34,500x max win at a $1 stake
The top prize is capped at 34,500x your stake. On a $1 spin that is $34,500; on $0.20 it is $6,900. 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.
Multipliers are applied to wins as they land; in many games several multipliers add together or multiply each other, which is where the largest wins come from.
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 96.63% RTP means
Expected return = stake × 96.63%
Over $100 of total bets, the long-run average loss is $3.37
RTP is a long-run average across millions of spins. Any single session can finish far above or below it, especially on a high volatility game.
Features explained (members only)
6 features explained: tumbling reels, expanding reels, free spins, multipliers and more
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.
Expanding reels
The grid grows during play, adding rows or reels and increasing the number of ways or lines that can pay.
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.
Multipliers
Multipliers increase a win by a set factor, such as 2x or 10x. They can be attached to symbols, applied to a whole spin, or grow during a feature, and are a main driver of the biggest wins.
Bonus buy
Lets you pay a fixed multiple of your stake to enter the bonus feature straight away instead of waiting for it to trigger. It raises variance considerably and is not available in every country (it is banned in the UK).
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. High volatility concentrates the return in rare, large wins. Long losing runs are normal. Keep stakes small (around 1% of your session budget or less) so you can ride out the swings. A simple rule: bring at least 300 spins' worth of budget, so a $50 budget suggests a stake of about $0.17.
4 more tips and a session planner
- Check which RTP version you're playing. Big Time Gaming offers this game at 96.63%, 94.6%, 86.49%. Open the game rules at your casino and prefer sites running the 96.63% version.
- Treat bonus buys as high-risk. Buying the feature concentrates your budget into a few large-variance rounds. Many results return less than the price paid. Read our bonus buy guide first.
- Bonus wagering: at 96.63% RTP, clearing $1,000 of wagering costs about $33.70 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 $0.20 minimum bet
For high volatility we suggest a budget of at least 300 spins. This is what that means for Star Clusters 2 (bets from $0.20 up to a maximum bet of $5).
| Budget | Stake a spin | Bet range | Average cost of 300 spins |
|---|---|---|---|
| $20 | $0.07 | Below the $0.20 minimum bet | $0.67 |
| $50 | $0.17 | Below the $0.20 minimum bet | $1.69 |
| $100 | $0.33 | Fits | $3.37 |
| $250 | $0.83 | Fits | $8.43 |
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: 96.63%, 94.6%, 86.49%
Big Time Gaming supplies Star Clusters 2 in 3 RTP versions and each casino chooses which one to run. Over $1,000 of bets, the 86.49% version costs about $101.40 more on average than the 96.63% version.
| Version | Average cost per $100 wagered | Extra vs best |
|---|---|---|
| 96.63% (best) | $3.37 | — |
| 94.6% | $5.40 | +$2.03 |
| 86.49% | $13.51 | +$10.14 |
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 98.18%)
Slots with the same mechanic (cluster pays) and volatility (high) as Star Clusters 2, with a higher published RTP. Casinos can still run lower versions of any of them.
Jack in a Pot98.18% RTP · +1.55 pts
Candy Tower98% RTP · +1.37 pts
Magic Oak98% RTP · +1.37 pts
Frenzy Clusters97.11% RTP · +0.48 ptsQuestions
Frequently asked questions
Who makes Star Clusters 2?
Star Clusters 2 is developed by Big Time Gaming and was released in 2025.
What is the RTP of Star Clusters 2?
The default RTP of Star Clusters 2 is 96.63%. Big Time Gaming also supplies versions at 94.6%, 86.49%, so check the game's info screen at your casino.
Is Star Clusters 2 high volatility?
Star Clusters 2 is rated high volatility. High volatility concentrates the return in rare, large wins.
What is the max win on Star Clusters 2?
The maximum win on Star Clusters 2 is 34,500x your stake, which is $34,500 on a $1 spin.
Can I play Star Clusters 2 for free?
Not on GambGenius at the moment: we don't list an official Big Time Gaming demo of Star Clusters 2.
Does Star Clusters 2 have a bonus buy?
Yes. Star Clusters 2 includes a bonus buy option, although it is unavailable in some countries such as the UK.
Where can I play Star Clusters 2?
Solstice Spins carries Big Time Gaming games. Check Star Clusters 2 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
- bigtimegaming.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 © Big Time Gaming, shown to identify the game.
