Vampire Moon slot: RTP and max win
Vampire Moon is a medium-volatility slot by Rob Slots on Stake Engine, released 10 Aug 2026. Its base game returns 96.00%, below the median Engine slot (96.02%). The top payout is 25,000× the bet, bigger than 81% of Engine slots; from a base spin it lands about once every 2,500,000 spins. It has 4 bonus buys priced at 50× to 200× the bet; the best returns 96.00%, so each buy costs 2.00× the bet on average over the long run. It is the No. 2741 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% | 25,000× | 1 in 2,500,000 | 1 in 2.17 | 1 in 19 | 0.04× base | Simulate |
| Feature Boost | Boosted spin | 3.00× | 96.00% | 25,000× | 1 in 833,333 | 1 in 2.01 | 1 in 12 | 0.12× base | Simulate |
| Wild Storm | Bonus buy | 50× | 96.00% | 25,000× | 1 in 50,000 | 1 in 1.43 | 1 in 5.52 | 2.00× base | Simulate |
| Wild Eclipse | Bonus buy | 80× | 96.00% | 25,000× | 1 in 31,250 | 1 in 1.43 | 1 in 5.15 | 3.20× base | Simulate |
| Blood Moon | Bonus buy | 100× | 96.00% | 25,000× | 1 in 25,000 | – | 1 in 2.44 | 4.00× base | Simulate |
| Eclipse | Bonus buy | 200× | 96.00% | 25,000× | 1 in 12,500 | – | 1 in 4.36 | 8.00× base | Simulate |
Work out the cost of Vampire Moon 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 Vampire Moon?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 2. All 4 of its bonus buys return 96.00%.
What is the max win in Vampire Moon and how likely is it?
The top payout is 25,000× the base bet. On a base spin it lands 1 in 2,500,000 spins. In the Wild Storm buy (50×) 25,000× lands 1 in 50,000 buys.
Does Vampire Moon have a bonus buy, and what does it cost?
Yes, 4 buy modes. Wild Storm: 50× the base bet, 96.00% RTP, an expected cost of 2.00× the base bet per buy. Wild Eclipse: 80× the base bet, 96.00% RTP, an expected cost of 3.20× the base bet per buy. Blood Moon: 100× the base bet, 96.00% RTP, an expected cost of 4.00× the base bet per buy. Eclipse: 200× the base bet, 96.00% RTP, an expected cost of 8.00× the base bet per buy.
Is Vampire Moon high or low volatility?
Medium. Its base-mode standard deviation is 16.9× 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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