Pirates Vault cover art

Pirates Vault slot: RTP and max win

By Ovryx Gaming. Released 28 Oct 2026, math version 2.
High volatilityNo. 450 most played this monthMini game

Pirates Vault is a high-volatility slot by Ovryx Gaming on Stake Engine, released 28 Oct 2026. The top payout is 49,000× the bet; from a base spin it lands about once every 1,755,131 spins. It has 20 bonus buys priced at 20× to 1,000× the bet; the best returns 96.01%, so each buy costs 0.80× the bet on average over the long run. It is the No. 450 most played Engine slot over the last 30 days.

Base RTP
96.01%
catalogue figure 96.010%
Max win
49,000×
of the base bet
Max win, base spins
1 in 1,755,131
49,000× top payout per spin
Base spin pays nothing
65.4%
of spins
Players, last 30 days
4,002
$672K wagered (Engine Insights)

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.

ModeTypeCostRTPMax winMax win oddsPays anythingReturns the costExpected cost per round
BaseBase spin1.00×96.01%49,000×1 in 1,755,1311 in 2.901 in 6.150.04× base Simulate
Base UngatedBase spin1.00×96.01%49,000×1 in 1,000,0001 in 111 in 110.04× base Simulate
Ante 2xBoosted spin2.00×96.01%49,000×1 in 835,2681 in 5.371 in 9.510.08× base Simulate
Ante 2x UngatedBoosted spin2.00×96.01%49,000×1 in 250,0001 in 6.731 in 6.730.08× base Simulate
Ante 3xBoosted spin3.00×96.01%49,000×1 in 560,2001 in 5.081 in 9.720.12× base Simulate
Ante 3x UngatedBoosted spin3.00×96.01%49,000×1 in 109,9991 in 8.191 in 160.12× base Simulate
Ante 5xBoosted spin5.00×96.01%49,000×1 in 343,6931 in 4.561 in 8.480.20× base Simulate
Ante 5x UngatedBoosted spin5.00×96.01%49,000×1 in 50,0001 in 201 in 230.20× base Simulate
Ante 10xBoosted spin10×96.01%49,000×1 in 167,0661 in 4.251 in 8.820.40× base Simulate
Ante 10x UngatedBoosted spin10×96.01%49,000×1 in 20,0001 in 3.761 in 9.690.40× base Simulate
Ante 20xBonus buy20×96.01%49,000×1 in 83,5421 in 3.301 in 6.630.80× base Simulate
Ante 20x UngatedBonus buy20×96.01%49,000×1 in 8,0001 in 1.571 in 5.400.80× base Simulate
BonusBonus buy100×96.01%49,000×1 in 22,129–1 in 5.003.99× base Simulate
Bonus UngatedBonus buy100×96.01%49,000×1 in 1,500–1 in 123.99× base Simulate
Prismatic 100Bonus buy100×96.01%49,000×1 in 7,3231 in 301 in 303.99× base Simulate
Prismatic 100 UngatedBonus buy100×96.01%49,000×1 in 9001 in 431 in 433.99× base Simulate
Prismatic 250Bonus buy250×96.01%49,000×1 in 2,0101 in 131 in 139.98× base Simulate
Prismatic 250 UngatedBonus buy250×96.01%49,000×1 in 3001 in 311 in 319.98× base Simulate
Ultra BonusBonus buy350×96.01%49,000×1 in 3,917–1 in 6.4513.97× base Simulate
Ultra Bonus UngatedBonus buy350×96.01%49,000×1 in 350–1 in 1513.97× base Simulate
Mystery BonusBonus buy500×96.01%49,000×1 in 2,4211 in 2.661 in 5.4519.95× base Simulate
Mystery Bonus UngatedBonus buy500×96.01%49,000×1 in 2001 in 101 in 1319.95× base Simulate
Prismatic 500Bonus buy500×96.01%49,000×1 in 9511 in 7.781 in 7.7819.95× base Simulate
Prismatic 500 UngatedBonus buy500×96.01%49,000×1 in 1701 in 141 in 1419.95× base Simulate
Ultra Bonus PlusBonus buy700×96.01%49,000×1 in 1,871–1 in 6.1527.93× base Simulate
Ultra Bonus Plus UngatedBonus buy700×96.01%49,000×1 in 170–1 in 7.8927.93× base Simulate
Max SpinBonus buy1,000×96.01%49,000×1 in 1,101–1 in 4.9239.90× base Simulate
Max Spin UngatedBonus buy1,000×96.01%49,000×1 in 120–1 in 8.6939.90× base Simulate
Mystery Bonus PlusBonus buy1,000×96.01%49,000×1 in 1,4441 in 2.001 in 2.6739.90× base Simulate
Mystery Bonus Plus UngatedBonus buy1,000×96.01%49,000×1 in 1301 in 3.931 in 4.3639.90× base Simulate

Work out the cost of Pirates Vault 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.

VersionBase RTP
v296.010%Active

Frequently asked

What is the RTP of Pirates Vault?

Base spins return 96.01% of the amount wagered over the long run, from the published outcome table for version 2. All 20 of its bonus buys return 96.01%.

What is the max win in Pirates Vault and how likely is it?

The top payout is 49,000× the base bet. On a base spin it lands 1 in 1,755,131 spins. In the Ante 20x buy (20×) 49,000× lands 1 in 83,542 buys.

Does Pirates Vault have a bonus buy, and what does it cost?

Yes, 20 buy modes. Ante 20x: 20× the base bet, 96.01% RTP, an expected cost of 0.80× the base bet per buy. Ante 20x Ungated: 20× the base bet, 96.01% RTP, an expected cost of 0.80× the base bet per buy. Bonus: 100× the base bet, 96.01% RTP, an expected cost of 3.99× the base bet per buy. Bonus Ungated: 100× the base bet, 96.01% RTP, an expected cost of 3.99× the base bet per buy. Prismatic 100: 100× the base bet, 96.01% RTP, an expected cost of 3.99× the base bet per buy. Prismatic 100 Ungated: 100× the base bet, 96.01% RTP, an expected cost of 3.99× the base bet per buy. Prismatic 250: 250× the base bet, 96.01% RTP, an expected cost of 9.98× the base bet per buy. Prismatic 250 Ungated: 250× the base bet, 96.01% RTP, an expected cost of 9.98× the base bet per buy. Ultra Bonus: 350× the base bet, 96.01% RTP, an expected cost of 13.97× the base bet per buy. Ultra Bonus Ungated: 350× the base bet, 96.01% RTP, an expected cost of 13.97× the base bet per buy. Mystery Bonus: 500× the base bet, 96.01% RTP, an expected cost of 19.95× the base bet per buy. Mystery Bonus Ungated: 500× the base bet, 96.01% RTP, an expected cost of 19.95× the base bet per buy. Prismatic 500: 500× the base bet, 96.01% RTP, an expected cost of 19.95× the base bet per buy. Prismatic 500 Ungated: 500× the base bet, 96.01% RTP, an expected cost of 19.95× the base bet per buy. Ultra Bonus Plus: 700× the base bet, 96.01% RTP, an expected cost of 27.93× the base bet per buy. Ultra Bonus Plus Ungated: 700× the base bet, 96.01% RTP, an expected cost of 27.93× the base bet per buy. Max Spin: 1,000× the base bet, 96.01% RTP, an expected cost of 39.90× the base bet per buy. Max Spin Ungated: 1,000× the base bet, 96.01% RTP, an expected cost of 39.90× the base bet per buy. Mystery Bonus Plus: 1,000× the base bet, 96.01% RTP, an expected cost of 39.90× the base bet per buy. Mystery Bonus Plus Ungated: 1,000× the base bet, 96.01% RTP, an expected cost of 39.90× the base bet per buy.

Is Pirates Vault high or low volatility?

High. Its base-mode standard deviation is 39.5× 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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