Millionaires Bay slot: RTP and max win
Millionaires Bay is a medium-volatility slot by Grim Relic Gaming on Stake Engine, released 30 Oct 2026. Its base game returns 96.70%, above the median Engine slot (96.02%) and higher than 86% of them. The top payout is 20,000× the bet, bigger than 59% of Engine slots; from a base spin it lands about once every 2,500,001 spins. It has 4 bonus buys priced at 20× to 200× the bet; the best returns 96.70%, so each buy costs 0.66× the bet on average over the long run. It is the No. 3362 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 v3. "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× | 96.70% | 20,000× | 1 in 2,500,001 | 1 in 3.15 | 1 in 11 | 0.03× base | Simulate |
| Ante | Boosted spin | 2.00× | 96.70% | 20,000× | 1 in 1,250,000 | 1 in 3.01 | 1 in 14 | 0.07× base | Simulate |
| Two Wilds | Bonus buy | 20× | 96.70% | 20,000× | 1 in 500,000 | 1 in 1.58 | 1 in 11 | 0.66× base | Simulate |
| Three Wilds | Bonus buy | 50× | 96.70% | 20,000× | 1 in 200,000 | 1 in 1.19 | 1 in 6.59 | 1.65× base | Simulate |
| Bonus | Bonus buy | 100× | 96.70% | 20,000× | 1 in 100,001 | – | 1 in 4.83 | 3.30× base | Simulate |
| Super Bonus | Bonus buy | 200× | 96.70% | 20,000× | 1 in 33,334 | – | 1 in 4.70 | 6.61× base | Simulate |
Work out the cost of Millionaires Bay 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 | |
|---|---|---|
| v3 | 96.700% | Active |
Frequently asked
What is the RTP of Millionaires Bay?
Base spins return 96.70% of the amount wagered over the long run, from the published outcome table for version 3. All 4 of its bonus buys return 96.70%.
What is the max win in Millionaires Bay and how likely is it?
The top payout is 20,000× the base bet. On a base spin it lands 1 in 2,500,001 spins. In the Two Wilds buy (20×) 20,000× lands 1 in 500,000 buys.
Does Millionaires Bay have a bonus buy, and what does it cost?
Yes, 4 buy modes. Two Wilds: 20× the base bet, 96.70% RTP, an expected cost of 0.66× the base bet per buy. Three Wilds: 50× the base bet, 96.70% RTP, an expected cost of 1.65× the base bet per buy. Bonus: 100× the base bet, 96.70% RTP, an expected cost of 3.30× the base bet per buy. Super Bonus: 200× the base bet, 96.70% RTP, an expected cost of 6.61× the base bet per buy.
Is Millionaires Bay high or low volatility?
Medium. Its base-mode standard deviation is 16.5× the bet, which puts it in the middle 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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