Onebit Vault slot: RTP and max win
Onebit Vault is a low-volatility slot by Onebit Forge on Stake Engine, released 23 Jul 2026. The top payout is 10,000× the bet. It has 10 bonus buys priced at 94× to 350× the bet; the best returns 96.50%, so each buy costs 3.29× the bet on average over the long run. It is the No. 6806 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 v13. "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 10Steps | Base spin | 1.00× | 96.50% | 300× | 1 in 19,803 | – | 1 in 3.84 | 0.04× base | Simulate |
| Base 11Steps | Base spin | 1.00× | 96.50% | 340× | 1 in 48,803 | – | 1 in 3.57 | 0.04× base | Simulate |
| Base 12Steps | Base spin | 1.00× | 96.50% | 400× | 1 in 95,237 | – | 1 in 3.45 | 0.04× base | Simulate |
| Base 13Steps | Base spin | 1.00× | 96.50% | 540× | 1 in 95,214 | – | 1 in 3.40 | 0.04× base | Simulate |
| Base 14Steps | Base spin | 1.00× | 96.50% | 700× | 1 in 1,999,203 | – | 1 in 3.38 | 0.04× base | Simulate |
| Base 5Steps | Base spin | 1.00× | 96.50% | 120× | 1 in 1,722 | – | 1 in 3.49 | 0.04× base | Simulate |
| Base 6Steps | Base spin | 1.00× | 96.50% | 130× | 1 in 2,127 | – | 1 in 6.29 | 0.04× base | Simulate |
| Base 7Steps | Base spin | 1.00× | 96.50% | 150× | 1 in 3,536 | – | 1 in 13 | 0.04× base | Simulate |
| Base 8Steps | Base spin | 1.00× | 96.50% | 160× | 1 in 3,840 | – | 1 in 6.04 | 0.04× base | Simulate |
| Base 9Steps | Base spin | 1.00× | 96.50% | 180× | 1 in 5,549 | – | 1 in 4.44 | 0.04× base | Simulate |
| Amulet 5Steps | Boosted spin | 1.20× | 96.50% | 120× | 1 in 1,466 | – | 1 in 2.68 | 0.04× base | Simulate |
| Treasure Pick 5Steps | Boosted spin | 1.50× | 96.50% | 330× | 1 in 7,544 | – | 1 in 6.91 | 0.05× base | Simulate |
| Amulet 6Steps | Boosted spin | 1.80× | 96.50% | 130× | 1 in 1,160 | – | 1 in 2.43 | 0.06× base | Simulate |
| Treasure Pick 6Steps | Boosted spin | 1.80× | 96.50% | 340× | 1 in 5,504 | – | 1 in 8.62 | 0.06× base | Simulate |
| Treasure Pick 7Steps | Boosted spin | 2.10× | 96.50% | 360× | 1 in 3,433 | – | 1 in 12 | 0.07× base | Simulate |
| Treasure Pick 8Steps | Boosted spin | 2.40× | 96.50% | 380× | 1 in 4,143 | – | 1 in 17 | 0.08× base | Simulate |
| Treasure Pick 9Steps | Boosted spin | 2.70× | 96.50% | 420× | 1 in 3,988 | – | 1 in 23 | 0.09× base | Simulate |
| Treasure Pick 10Steps | Boosted spin | 3.00× | 96.50% | 780× | 1 in 19,787 | – | 1 in 35 | 0.11× base | Simulate |
| Amulet 7Steps | Boosted spin | 3.20× | 96.50% | 150× | 1 in 835 | – | 1 in 2.08 | 0.11× base | Simulate |
| Treasure Pick 11Steps | Boosted spin | 3.30× | 96.50% | 900× | 1 in 16,524 | – | 1 in 59 | 0.12× base | Simulate |
| Treasure Pick 12Steps | Boosted spin | 3.70× | 96.50% | 1,120× | 1 in 48,781 | – | 1 in 38 | 0.13× base | Simulate |
| Amulet 8Steps | Boosted spin | 3.90× | 96.50% | 160× | 1 in 818 | – | 1 in 2.76 | 0.14× base | Simulate |
| Treasure Pick 13Steps | Boosted spin | 4.00× | 96.50% | 1,740× | 1 in 1,999,942 | – | 1 in 36 | 0.14× base | Simulate |
| Amulet 9Steps | Boosted spin | 4.40× | 96.50% | 180× | 1 in 953 | – | 1 in 3.78 | 0.15× base | Simulate |
| Treasure Pick 14Steps | Boosted spin | 4.40× | 96.50% | 3,000× | 1 in 1,999,996 | – | 1 in 78 | 0.15× base | Simulate |
| Amulet 10Steps | Boosted spin | 4.90× | 96.50% | 300× | 1 in 4,526 | – | 1 in 5.73 | 0.17× base | Simulate |
| Amulet 11Steps | Boosted spin | 6.10× | 96.50% | 340× | 1 in 3,844 | – | 1 in 9.02 | 0.21× base | Simulate |
| Amulet 12Steps | Boosted spin | 6.80× | 96.50% | 400× | 1 in 4,534 | – | 1 in 16 | 0.24× base | Simulate |
| Amulet 13Steps | Boosted spin | 7.40× | 96.50% | 540× | 1 in 4,338 | – | 1 in 32 | 0.26× base | Simulate |
| Amulet 14Steps | Boosted spin | 8.00× | 96.50% | 700× | 1 in 19,781 | – | 1 in 27 | 0.28× base | Simulate |
| Triple Idol 5Steps | Bonus buy | 94× | 96.50% | 1,200× | 1 in 3,725 | – | 1 in 3.37 | 3.29× base | Simulate |
| Triple Idol 6Steps | Bonus buy | 109× | 96.50% | 1,600× | 1 in 13,567 | – | 1 in 3.47 | 3.82× base | Simulate |
| Triple Idol 7Steps | Bonus buy | 118× | 96.50% | 2,200× | 1 in 764,997 | – | 1 in 3.40 | 4.13× base | Simulate |
| Triple Idol 8Steps | Bonus buy | 132× | 96.50% | 3,000× | 1 in 1,731,109 | – | 1 in 3.46 | 4.62× base | Simulate |
| Triple Idol 9Steps | Bonus buy | 160× | 96.50% | 4,000× | 1 in 2,025,496 | – | 1 in 3.13 | 5.60× base | Simulate |
| Triple Idol 10Steps | Bonus buy | 192× | 96.50% | 5,200× | 1 in 2,319,554 | – | 1 in 2.86 | 6.72× base | Simulate |
| Triple Idol 11Steps | Bonus buy | 224× | 96.50% | 6,400× | 1 in 1,924,672 | – | 1 in 2.89 | 7.84× base | Simulate |
| Triple Idol 12Steps | Bonus buy | 264× | 96.50% | 7,600× | 1 in 2,136,441 | – | 1 in 2.91 | 9.24× base | Simulate |
| Triple Idol 13Steps | Bonus buy | 305× | 96.50% | 8,800× | 1 in 2,021,512 | – | 1 in 2.84 | 10.68× base | Simulate |
| Triple Idol 14Steps | Bonus buy | 350× | 96.50% | 10,000× | 1 in 2,010,792 | – | 1 in 2.98 | 12.25× base | Simulate |
Work out the cost of Onebit 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.
| Version | Base RTP | |
|---|---|---|
| v13 | 96.500% | Active |
Frequently asked
What is the RTP of Onebit Vault?
Base spins return 96.50% of the amount wagered over the long run, from the published outcome table for version 13. All 10 of its bonus buys return 96.50%.
What is the max win in Onebit Vault and how likely is it?
The top payout is 10,000× the base bet. On a base spin the top payout of 300× lands 1 in 19,803 spins. In the Triple Idol 5Steps buy (94×) 1,200× lands 1 in 3,725 buys.
Does Onebit Vault have a bonus buy, and what does it cost?
Yes, 10 buy modes. Triple Idol 5Steps: 94× the base bet, 96.50% RTP, an expected cost of 3.29× the base bet per buy. Triple Idol 6Steps: 109× the base bet, 96.50% RTP, an expected cost of 3.82× the base bet per buy. Triple Idol 7Steps: 118× the base bet, 96.50% RTP, an expected cost of 4.13× the base bet per buy. Triple Idol 8Steps: 132× the base bet, 96.50% RTP, an expected cost of 4.62× the base bet per buy. Triple Idol 9Steps: 160× the base bet, 96.50% RTP, an expected cost of 5.60× the base bet per buy. Triple Idol 10Steps: 192× the base bet, 96.50% RTP, an expected cost of 6.72× the base bet per buy. Triple Idol 11Steps: 224× the base bet, 96.50% RTP, an expected cost of 7.84× the base bet per buy. Triple Idol 12Steps: 264× the base bet, 96.50% RTP, an expected cost of 9.24× the base bet per buy. Triple Idol 13Steps: 305× the base bet, 96.50% RTP, an expected cost of 10.68× the base bet per buy. Triple Idol 14Steps: 350× the base bet, 96.50% RTP, an expected cost of 12.25× the base bet per buy.
Is Onebit Vault high or low volatility?
Low. Its base-mode standard deviation is 4.9× 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.