Mr Jack Riches slot: RTP and max win
Mr Jack Riches is a high-volatility slot by Big Bad Radish on Stake Engine, released 9 Apr 2026. Its base game returns 96.00%, below the median Engine slot (96.02%). The top payout is 15,555× the bet, bigger than 50% of Engine slots; from a base spin it lands about once every 1,555,501 spins. It has 3 bonus buys priced at 20× to 200× the bet; the best returns 96.00%, so each buy costs 0.80× the bet on average over the long run. It is the No. 2016 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 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.
| 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% | 15,555× | 1 in 1,555,501 | 1 in 3.44 | 1 in 20 | 0.04× base | Simulate |
| Bonus | Boosted spin | 3.00× | 96.00% | 15,555× | 1 in 518,500 | 1 in 3.85 | 1 in 11 | 0.12× base | Simulate |
| Super | Boosted spin | 3.00× | 96.00% | 15,555× | 1 in 518,500 | 1 in 2.00 | 1 in 37 | 0.12× base | Simulate |
| Feature Spin | Bonus buy | 20× | 96.00% | 15,555× | 1 in 77,776 | – | 1 in 9.42 | 0.80× base | Simulate |
| Ante | Bonus buy | 150× | 95.99% | 15,555× | 1 in 10,371 | – | 1 in 16 | 6.01× base | Simulate |
| Super Spin | Bonus buy | 200× | 95.99% | 15,555× | 1 in 7,778 | – | 1 in 10 | 8.02× base | Simulate |
Work out the cost of Mr Jack Riches 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 | |
|---|---|---|
| v2 | 96.000% | Active |
Frequently asked
What is the RTP of Mr Jack Riches?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 2. Its bonus buys return between 95.99% and 96.00%.
What is the max win in Mr Jack Riches and how likely is it?
The top payout is 15,555× the base bet. On a base spin it lands 1 in 1,555,501 spins. In the Feature Spin buy (20×) 15,555× lands 1 in 77,776 buys.
Does Mr Jack Riches have a bonus buy, and what does it cost?
Yes, 3 buy modes. Feature Spin: 20× the base bet, 96.00% RTP, an expected cost of 0.80× the base bet per buy. Ante: 150× the base bet, 95.99% RTP, an expected cost of 6.01× the base bet per buy. Super Spin: 200× the base bet, 95.99% RTP, an expected cost of 8.02× the base bet per buy.
Is Mr Jack Riches high or low volatility?
High. Its base-mode standard deviation is 35.9× 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.
Slots with similar math to Mr Jack Riches
Matched on volatility, max win, RTP and whether there's a bonus buy. Not on theme.
Jinx JarMidnight Gaming RTP96.00%Max win15,000×Volatility
Lucky DetourMojito Games RTP96.00%Max win15,000×Volatility
snarks.exeNOTDED RTP96.00%Max win15,000×Volatility
Scarlet ReignTapLab RTP96.00%Max win15,555×Volatility
Turd FlingersProbably Fair Gaming RTP96.00%Max win15,000×Volatility
Shelf DestructAlpha Male Gaming RTP96.00%Max win15,000×Volatility