Cosmic Clusters slot: RTP and max win
Cosmic Clusters is a high-volatility slot by Kek Studios on Stake Engine, released 17 Jul 2026. Its base game returns 96.00%, below the median Engine slot (96.02%). The top payout is 25,000× the bet, bigger than 81% of Engine slots; from a base spin it lands about once every 2,507,925 spins. It has 5 bonus buys priced at 100× to 500× the bet; the best returns 96.00%, so each buy costs 4.00× the bet on average over the long run. It is the No. 6515 most played Engine slot over the last 30 days.
Every mode, side by side
Costs are multiples of the base bet. Odds come from the published outcome table for v2. "Returns the cost" counts rounds that pay back at least what the mode cost. Expected cost is cost × (1 − RTP): the average amount lost per round over the long run.
| Mode | Type | Cost | RTP | Max win | Max win odds | Pays anything | Returns the cost | Expected cost per round | |
|---|---|---|---|---|---|---|---|---|---|
| Base | Base spin | 1.00× | 96.00% | 25,000× | 1 in 2,507,925 | 1 in 3.33 | 1 in 16 | 0.04× base | Simulate |
| Bonus Chance | Boosted spin | 3.00× | 96.00% | 25,000× | 1 in 2,501,401 | 1 in 3.33 | 1 in 17 | 0.12× base | Simulate |
| Bonus | Bonus buy | 100× | 96.00% | 25,000× | 1 in 200,001 | – | 1 in 5.83 | 4.00× base | Simulate |
| Mystery Bonus | Bonus buy | 250× | 96.00% | 25,000× | 1 in 1,252,129 | – | 1 in 4.58 | 10.00× base | Simulate |
| Super Bonus | Bonus buy | 250× | 96.00% | 25,000× | 1 in 200,244 | – | 1 in 4.55 | 10.00× base | Simulate |
| Hail Mary | Bonus buy | 300× | 96.00% | 25,000× | 1 in 500,404 | 1 in 1.72 | 1 in 3.66 | 12.00× base | Simulate |
| Meteor Storm | Bonus buy | 500× | 96.00% | 25,000× | 1 in 206,741 | – | 1 in 3.31 | 20.00× base | Simulate |
Work out the cost of Cosmic Clusters bonus buys at your bet size
Version history
Base-mode RTP per published math version. Older versions stay public in the fairness API, so changes can be checked.
| Version | Base RTP | |
|---|---|---|
| v2 | 96.000% | Active |
Frequently asked
What is the RTP of Cosmic Clusters?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 2. All 5 of its bonus buys return 96.00%.
What is the max win in Cosmic Clusters and how likely is it?
The top payout is 25,000× the base bet. On a base spin it lands 1 in 2,507,925 spins. In the Bonus buy (100×) 25,000× lands 1 in 200,001 buys.
Does Cosmic Clusters have a bonus buy, and what does it cost?
Yes, 5 buy modes. Bonus: 100× the base bet, 96.00% RTP, an expected cost of 4.00× the base bet per buy. Mystery Bonus: 250× the base bet, 96.00% RTP, an expected cost of 10.00× the base bet per buy. Super Bonus: 250× the base bet, 96.00% RTP, an expected cost of 10.00× the base bet per buy. Hail Mary: 300× the base bet, 96.00% RTP, an expected cost of 12.00× the base bet per buy. Meteor Storm: 500× the base bet, 96.00% RTP, an expected cost of 20.00× the base bet per buy.
Is Cosmic Clusters high or low volatility?
High. Its base-mode standard deviation is 41.6× the bet, which puts it in the highest third of Engine games. What volatility means.
Can I check that a result was fair?
Yes. Engine games use provably fair seeds. Once your server seed is revealed you can replay any round against the published outcome table. See how to verify a result.
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