Castle Cluster slot: RTP and max win
Castle Cluster is a low-volatility slot by Golden Infinity on Stake Engine, released 27 Apr 2026. Its base game returns 96.30%, above the median Engine slot (96.02%) and higher than 61% of them. The top payout is 10,000× the bet; from a base spin it lands about once every 833,333 spins. It has 5 bonus buys priced at 50× to 500× the bet; the best returns 95.90%, so each buy costs 2.05× the bet on average over the long run. It is the No. 5759 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 v14. "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× | 96.30% | 10,000× | 1 in 833,333 | 1 in 9.44 | 1 in 10 | 0.04× base | Simulate |
| Bonus Booster | Boosted spin | 2.00× | 96.30% | 10,000× | 1 in 416,667 | 1 in 8.70 | 1 in 9.35 | 0.07× base | Simulate |
| Feature 2x | Bonus buy | 50× | 95.90% | 10,000× | 1 in 16,667 | 1 in 8.00 | 1 in 8.04 | 2.05× base | Simulate |
| Bonus | Bonus buy | 100× | 95.90% | 10,000× | 1 in 8,333 | every round | 1 in 3.58 | 4.10× base | Simulate |
| Feature 4x | Bonus buy | 100× | 95.90% | 10,000× | 1 in 8,333 | 1 in 7.99 | 1 in 8.13 | 4.10× base | Simulate |
| Feature 8x | Bonus buy | 200× | 95.90% | 10,000× | 1 in 4,167 | 1 in 7.98 | 1 in 8.17 | 8.20× base | Simulate |
| Super Bonus | Bonus buy | 500× | 95.90% | 10,000× | 1 in 1,667 | every round | 1 in 3.48 | 20.50× base | Simulate |
Work out the cost of Castle Cluster 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 | |
|---|---|---|
| v14 | 96.300% | Active |
| v11 | 96.300% |
Frequently asked
What is the RTP of Castle Cluster?
Base spins return 96.30% of the amount wagered over the long run, from the published outcome table for version 14. All 5 of its bonus buys return 95.90%.
What is the max win in Castle Cluster and how likely is it?
The top payout is 10,000× the base bet. On a base spin it lands 1 in 833,333 spins. In the Feature 2x buy (50×) 10,000× lands 1 in 16,667 buys.
Does Castle Cluster have a bonus buy, and what does it cost?
Yes, 5 buy modes. Feature 2x: 50× the base bet, 95.90% RTP, an expected cost of 2.05× the base bet per buy. Bonus: 100× the base bet, 95.90% RTP, an expected cost of 4.10× the base bet per buy. Feature 4x: 100× the base bet, 95.90% RTP, an expected cost of 4.10× the base bet per buy. Feature 8x: 200× the base bet, 95.90% RTP, an expected cost of 8.20× the base bet per buy. Super Bonus: 500× the base bet, 95.90% RTP, an expected cost of 20.50× the base bet per buy.
Is Castle Cluster high or low volatility?
Low. Its base-mode standard deviation is 13.3× the bet, which puts it in the lowest 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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