Skull King slot: RTP and max win
Skull King is a low-volatility slot by Ravensage on Stake Engine, released 17 Aug 2026. Its base game returns 95.00%, below the median Engine slot (96.02%). The top payout is 5,000× the bet; from a base spin it lands about once every 16,129,447 spins. It has 5 bonus buys priced at 100× to 1,000× the bet; the best returns 95.00%, so each buy costs 5.00× the bet on average over the long run. It is the No. 5697 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 v1. "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× | 95.00% | 5,000× | 1 in 16,129,447 | 1 in 3.40 | 1 in 14 | 0.05× base | Simulate |
| Soul Drain | Bonus buy | 100× | 95.00% | 5,000× | 1 in 161,290 | 1 in 2.70 | 1 in 7.35 | 5.00× base | Simulate |
| Max Soul Drain | Bonus buy | 300× | 95.00% | 5,000× | 1 in 53,763 | 1 in 1.33 | 1 in 3.82 | 15.00× base | Simulate |
| Standard Bonus | Bonus buy | 500× | 95.00% | 5,000× | 1 in 32,258 | 1 in 1.05 | 1 in 4.91 | 25.00× base | Simulate |
| Super Bonus | Bonus buy | 700× | 95.00% | 5,000× | 1 in 23,041 | – | 1 in 3.98 | 35.00× base | Simulate |
| Skull Bonus | Bonus buy | 1,000× | 95.00% | 5,000× | 1 in 16,129 | – | 1 in 4.07 | 50.00× base | Simulate |
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 | |
|---|---|---|
| v1 | 95.000% | Active |
Frequently asked
What is the RTP of Skull King?
Base spins return 95.00% of the amount wagered over the long run, from the published outcome table for version 1. All 5 of its bonus buys return 95.00%.
What is the max win in Skull King and how likely is it?
The top payout is 5,000× the base bet. On a base spin it lands 1 in 16,129,447 spins. In the Soul Drain buy (100×) 5,000× lands 1 in 161,290 buys.
Does Skull King have a bonus buy, and what does it cost?
Yes, 5 buy modes. Soul Drain: 100× the base bet, 95.00% RTP, an expected cost of 5.00× the base bet per buy. Max Soul Drain: 300× the base bet, 95.00% RTP, an expected cost of 15.00× the base bet per buy. Standard Bonus: 500× the base bet, 95.00% RTP, an expected cost of 25.00× the base bet per buy. Super Bonus: 700× the base bet, 95.00% RTP, an expected cost of 35.00× the base bet per buy. Skull Bonus: 1,000× the base bet, 95.00% RTP, an expected cost of 50.00× the base bet per buy.
Is Skull King high or low volatility?
Low. Its base-mode standard deviation is 5.8× 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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