Lucky Block slot: RTP and max win
Lucky Block is a low-volatility slot by NUMA STUDIO GAMES on Stake Engine, released 4 Aug 2026. Its base game returns 95.61%, below the median Engine slot (96.02%). The top payout is 25,000× the bet, bigger than 81% of Engine slots. It has 2 bonus buys priced at 100× the bet; the best returns 95.79%, so each buy costs 4.21× the bet on average over the long run. It is the No. 5443 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 v6. "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 | |
|---|---|---|---|---|---|---|---|---|---|
| Standard | Base spin | 1.00× | 95.61% | 250× | 1 in 2,564 | 1 in 1.01 | 1 in 6.31 | 0.04× base | Simulate |
| Ante | Boosted spin | 2.00× | 95.34% | 500× | 1 in 5,263 | 1 in 1.13 | 1 in 6.19 | 0.09× base | Simulate |
| Battle High | Bonus buy | 100× | 95.79% | 12,500× | 1 in 2,083 | 1 in 2.50 | 1 in 4.92 | 4.21× base | Simulate |
| Battle Very High | Bonus buy | 100× | 95.51% | 25,000× | 1 in 3,226 | 1 in 5.05 | 1 in 8.70 | 4.49× base | Simulate |
Work out the cost of Lucky Block 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 | |
|---|---|---|
| v6 | 95.611% | Active |
| v4 | 96.351% |
Frequently asked
What is the RTP of Lucky Block?
Base spins return 95.61% of the amount wagered over the long run, from the published outcome table for version 6. Its bonus buys return between 95.51% and 95.79%.
What is the max win in Lucky Block and how likely is it?
The top payout is 25,000× the base bet. On a base spin the top payout of 250× lands 1 in 2,564 spins. In the Battle High buy (100×) 12,500× lands 1 in 2,083 buys.
Does Lucky Block have a bonus buy, and what does it cost?
Yes, 2 buy modes. Battle High: 100× the base bet, 95.79% RTP, an expected cost of 4.21× the base bet per buy. Battle Very High: 100× the base bet, 95.51% RTP, an expected cost of 4.49× the base bet per buy.
Is Lucky Block high or low volatility?
Low. Its base-mode standard deviation is 7.1× 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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