Extreme Blackjack slot: RTP and max win
Extreme Blackjack is a low-volatility slot by Bolly Games on Stake Engine, released 3 May 2026. Its base game returns 97.03%, above the median Engine slot (96.02%) and higher than 98% of them. The top payout is 194× the bet. It has 3 bonus buys priced at 50× to 100× the bet; the best returns 97.28%, so each buy costs 2.72× the bet on average over the long run. It is the No. 574 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 v38. "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 | |
|---|---|---|---|---|---|---|---|---|---|
| Classic 2v1 | Bonus buy | 50× | 97.03% | 73× | 1 in 1.50 | 1 in 1.50 | 1 in 1.50 | 1.48× base | Simulate |
| Bigger Wins | Bonus buy | 100× | 97.27% | 194× | 1 in 2.09 | 1 in 1.91 | 1 in 1.91 | 2.73× base | Simulate |
| Drake Vs Eddie | Bonus buy | 100× | 97.28% | 144× | 1 in 1.55 | 1 in 1.45 | 1 in 1.45 | 2.72× base | Simulate |
| Base | Unknown | – | 97.47% | – | – | – | – | – | |
| Bonus Buy | Unknown | – | 97.36% | – | – | – | – | – |
Work out the cost of Extreme Blackjack 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 | |
|---|---|---|
| v38 | 97.033% | Active |
Frequently asked
What is the RTP of Extreme Blackjack?
Base spins return 97.03% of the amount wagered over the long run, from the published outcome table for version 38. Its bonus buys return between 97.03% and 97.28%.
What is the max win in Extreme Blackjack and how likely is it?
The top payout is 194× the base bet. On a base spin the top payout of 73× lands 1 in 1.50 spins. In the Drake Vs Eddie buy (100×) 144× lands 1 in 1.55 buys.
Does Extreme Blackjack have a bonus buy, and what does it cost?
Yes, 3 buy modes. Classic 2v1: 50× the base bet, 97.03% RTP, an expected cost of 1.48× the base bet per buy. Bigger Wins: 100× the base bet, 97.27% RTP, an expected cost of 2.73× the base bet per buy. Drake Vs Eddie: 100× the base bet, 97.28% RTP, an expected cost of 2.72× the base bet per buy.
Is Extreme Blackjack high or low volatility?
Low. Its base-mode standard deviation is 1.7× 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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