LeadStone slot: RTP and max win
LeadStone is a high-volatility slot by SuperFlip Gaming on Stake Engine, released 23 Sep 2026. Its base game returns 95.95%, below the median Engine slot (96.02%). The top payout is 20,000× the bet, bigger than 59% of Engine slots; from a base spin it lands about once every 249,988 spins. It has 5 bonus buys priced at 40× to 500× the bet; the best returns 96.05%, so each buy costs 1.58× the bet on average over the long run. It is the No. 2942 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× | 95.95% | 20,000× | 1 in 249,988 | 1 in 2.66 | 1 in 18 | 0.04× base | Simulate |
| Flip Boost | Boosted spin | 1.50× | 96.01% | 20,000× | 1 in 249,960 | 1 in 2.35 | 1 in 20 | 0.06× base | Simulate |
| Giant Symbol | Bonus buy | 40× | 96.05% | 20,000× | 1 in 427,305 | 1 in 1.65 | 1 in 14 | 1.58× base | Simulate |
| Giant Wild | Bonus buy | 80× | 96.05% | 20,000× | 1 in 150,191 | – | 1 in 47 | 3.16× base | Simulate |
| Free Spins | Bonus buy | 100× | 96.05% | 20,000× | 1 in 71,976 | every round | 1 in 9.80 | 3.95× base | Simulate |
| Mystery | Bonus buy | 250× | 96.05% | 20,000× | 1 in 48,364 | 1 in 2.83 | 1 in 8.69 | 9.87× base | Simulate |
| Super Free Spins | Bonus buy | 500× | 96.05% | 20,000× | 1 in 22,634 | – | 1 in 11 | 19.76× 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 | |
|---|---|---|
| v2 | 95.952% | Active |
Frequently asked
What is the RTP of LeadStone?
Base spins return 95.95% of the amount wagered over the long run, from the published outcome table for version 2. All 5 of its bonus buys return 96.05%.
What is the max win in LeadStone and how likely is it?
The top payout is 20,000× the base bet. On a base spin it lands 1 in 249,988 spins. In the Giant Symbol buy (40×) 20,000× lands 1 in 427,305 buys.
Does LeadStone have a bonus buy, and what does it cost?
Yes, 5 buy modes. Giant Symbol: 40× the base bet, 96.05% RTP, an expected cost of 1.58× the base bet per buy. Giant Wild: 80× the base bet, 96.05% RTP, an expected cost of 3.16× the base bet per buy. Free Spins: 100× the base bet, 96.05% RTP, an expected cost of 3.95× the base bet per buy. Mystery: 250× the base bet, 96.05% RTP, an expected cost of 9.87× the base bet per buy. Super Free Spins: 500× the base bet, 96.05% RTP, an expected cost of 19.76× the base bet per buy.
Is LeadStone high or low volatility?
High. Its base-mode standard deviation is 44.0× 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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