Valley of Bones slot: RTP and max win
Valley of Bones is a high-volatility slot by GOLDIE GAMES on Stake Engine, released 27 Aug 2026. Its base game returns 95.00%, below the median Engine slot (96.02%). The top payout is 50,000× the bet, bigger than 97% of Engine slots; from a base spin it lands about once every 12,544,118 spins. It has 5 bonus buys priced at 100× to 500× the bet; the best returns 95.00%, so each buy costs 12× the bet on average over the long run.
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% | 50,000× | 1 in 12,544,118 | 1 in 7.21 | 1 in 53 | 0.05× base | Simulate |
| Hunt | Boosted spin | 3.00× | 94.99% | 50,000× | 1 in 740,412 | 1 in 18 | 1 in 36 | 0.15× base | Simulate |
| Bonus | Bonus buy | 100× | 95.00% | 50,000× | 1 in 24,845 | – | 1 in 5.64 | 5.00× base | Simulate |
| Power Spin | Bonus buy | 100× | 95.00% | 50,000× | 1 in 26,364 | 1 in 6.22 | 1 in 9.56 | 5.00× base | Simulate |
| Hyper Spin | Bonus buy | 250× | 95.00% | 50,000× | 1 in 21,513 | 1 in 1.66 | 1 in 4.37 | 12.50× base | Simulate |
| Mystery Bonus | Bonus buy | 500× | 95.00% | 50,000× | 1 in 39,400 | 1 in 1.67 | 1 in 4.17 | 25.00× base | Simulate |
| Power Bonus | Bonus buy | 500× | 95.00% | 50,000× | 1 in 215,167 | every round | 1 in 4.31 | 25.00× base | Simulate |
Work out the cost of Valley of Bones 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 | |
|---|---|---|
| v1 | 94.996% | Active |
Frequently asked
What is the RTP of Valley of Bones?
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 Valley of Bones and how likely is it?
The top payout is 50,000× the base bet. On a base spin it lands 1 in 12,544,118 spins. In the Hyper Spin buy (250×) 50,000× lands 1 in 21,513 buys.
Does Valley of Bones have a bonus buy, and what does it cost?
Yes, 5 buy modes. Bonus: 100× the base bet, 95.00% RTP, an expected cost of 5.00× the base bet per buy. Power Spin: 100× the base bet, 95.00% RTP, an expected cost of 5.00× the base bet per buy. Hyper Spin: 250× the base bet, 95.00% RTP, an expected cost of 12.50× the base bet per buy. Mystery Bonus: 500× the base bet, 95.00% RTP, an expected cost of 25.00× the base bet per buy. Power Bonus: 500× the base bet, 95.00% RTP, an expected cost of 25.00× the base bet per buy.
Is Valley of Bones high or low volatility?
High. Its base-mode standard deviation is 34.5× 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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