BOOMSHAFT slot: RTP and max win
BOOMSHAFT is a low-volatility slot by Bad Habit on Stake Engine, released 28 May 2026. Its base game returns 96.00%, below the median Engine slot (96.02%). The top payout is 10,000× the bet; from a base spin it lands about once every 2,411,160 spins. It has 4 bonus buys priced at 100× to 500× the bet; the best returns 96.00%, so each buy costs 4.00× the bet on average over the long run. It is the No. 1570 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 v17. "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× | 96.00% | 10,000× | 1 in 2,411,160 | 1 in 6.67 | 1 in 7.76 | 0.04× base | Simulate |
| Extra Blast | Boosted spin | 2.00× | 96.00% | 10,000× | 1 in 1,443,065 | 1 in 8.33 | 1 in 8.69 | 0.08× base | Simulate |
| Deep Mine | Boosted spin | 5.00× | 96.00% | 10,000× | 1 in 1,883,536 | 1 in 7.69 | 1 in 7.93 | 0.20× base | Simulate |
| Boomshaft | Bonus buy | 100× | 96.00% | 10,000× | 1 in 1,015,181 | 1 in 1.06 | 1 in 2.19 | 4.00× base | Simulate |
| Tnt Frenzy | Bonus buy | 100× | 96.00% | 10,000× | 1 in 1,397,598 | 1 in 1.03 | 1 in 2.91 | 4.00× base | Simulate |
| Boomshaft Extended | Bonus buy | 250× | 96.00% | 10,000× | 1 in 1,850,614 | 1 in 1.02 | 1 in 2.23 | 10.00× base | Simulate |
| Dig For Hidden | Bonus buy | 500× | 96.00% | 10,000× | 1 in 1,594,209 | 1 in 1.03 | 1 in 2.44 | 20.00× 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 | |
|---|---|---|
| v17 | 96.000% | Active |
Frequently asked
What is the RTP of BOOMSHAFT?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 17. All 4 of its bonus buys return 96.00%.
What is the max win in BOOMSHAFT and how likely is it?
The top payout is 10,000× the base bet. On a base spin it lands 1 in 2,411,160 spins. In the Boomshaft buy (100×) 10,000× lands 1 in 1,015,181 buys.
Does BOOMSHAFT have a bonus buy, and what does it cost?
Yes, 4 buy modes. Boomshaft: 100× the base bet, 96.00% RTP, an expected cost of 4.00× the base bet per buy. Tnt Frenzy: 100× the base bet, 96.00% RTP, an expected cost of 4.00× the base bet per buy. Boomshaft Extended: 250× the base bet, 96.00% RTP, an expected cost of 10.00× the base bet per buy. Dig For Hidden: 500× the base bet, 96.00% RTP, an expected cost of 20.00× the base bet per buy.
Is BOOMSHAFT high or low volatility?
Low. Its base-mode standard deviation is 10.0× 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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