Sushi Serious slot: RTP and max win
Sushi Serious is a high-volatility slot by SERIOUS BOOK on Stake Engine, released 7 Aug 2026. Its base game returns 96.01%, below the median Engine slot (96.02%). The top payout is 50,000× the bet, bigger than 97% of Engine slots; from a base spin it lands about once every 1,039,998 spins. It has 4 bonus buys priced at 100× to 1,000× the bet; the best returns 96.04%, so each buy costs 24× the bet on average over the long run. It is the No. 3966 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 v31. "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 Game | Base spin | 1.00× | 96.01% | 50,000× | 1 in 1,039,998 | 1 in 45 | 1 in 103 | 0.04× base | Simulate |
| Extra Fs | Bonus buy | 100× | 96.02% | 50,000× | 1 in 3,190 | 1 in 5.81 | 1 in 6.37 | 3.98× base | Simulate |
| Gold Bonus | Bonus buy | 300× | 96.00% | 50,000× | 1 in 23,328 | – | 1 in 3.62 | 11.99× base | Simulate |
| Diamond Bonus | Bonus buy | 600× | 96.04% | 50,000× | 1 in 12,106 | – | 1 in 3.35 | 23.77× base | Simulate |
| Serious Bonus | Bonus buy | 1,000× | 96.00% | 50,000× | 1 in 100 | 1 in 12 | 1 in 12 | 40.00× base | Simulate |
Work out the cost of Sushi Serious 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 | |
|---|---|---|
| v31 | 96.006% | Active |
Frequently asked
What is the RTP of Sushi Serious?
Base spins return 96.01% of the amount wagered over the long run, from the published outcome table for version 31. Its bonus buys return between 96.00% and 96.04%.
What is the max win in Sushi Serious and how likely is it?
The top payout is 50,000× the base bet. On a base spin it lands 1 in 1,039,998 spins. In the Diamond Bonus buy (600×) 50,000× lands 1 in 12,106 buys.
Does Sushi Serious have a bonus buy, and what does it cost?
Yes, 4 buy modes. Extra Fs: 100× the base bet, 96.02% RTP, an expected cost of 3.98× the base bet per buy. Gold Bonus: 300× the base bet, 96.00% RTP, an expected cost of 11.99× the base bet per buy. Diamond Bonus: 600× the base bet, 96.04% RTP, an expected cost of 23.77× the base bet per buy. Serious Bonus: 1,000× the base bet, 96.00% RTP, an expected cost of 40.00× the base bet per buy.
Is Sushi Serious high or low volatility?
High. Its base-mode standard deviation is 57.5× 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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