Monster Scream slot: RTP and max win
Monster Scream is a high-volatility slot by Whale Games on Stake Engine, released 22 Aug 2026. Its base game returns 96.50%, above the median Engine slot (96.02%) and higher than 66% of them. The top payout is 50,000× the bet, bigger than 97% of Engine slots; from a base spin it lands about once every 2,300,000 spins. It has 6 bonus buys priced at 100× to 1,500× the bet; the best returns 96.58%, so each buy costs 10× the bet on average over the long run. It is the No. 2040 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 v71. "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× | 96.50% | 50,000× | 1 in 2,300,000 | 1 in 3.33 | 1 in 97 | 0.04× base | Simulate |
| Ante | Boosted spin | 3.00× | 96.50% | 50,000× | 1 in 1,500,000 | 1 in 3.33 | 1 in 51 | 0.11× base | Simulate |
| Capsule Spins | Bonus buy | 100× | 96.50% | 50,000× | 1 in 25,000 | every round | 1 in 5.81 | 3.50× base | Simulate |
| Bonus | Bonus buy | 200× | 96.50% | 50,000× | 1 in 40,000 | every round | 1 in 8.47 | 7.00× base | Simulate |
| Hidden | Bonus buy | 300× | 96.58% | 50,000× | 1 in 4,996 | 1 in 2.50 | 1 in 9.11 | 10.27× base | Simulate |
| Super Bonus | Bonus buy | 500× | 96.50% | 50,000× | 1 in 20,000 | every round | 1 in 5.18 | 17.50× base | Simulate |
| Super Capsule Spins | Bonus buy | 1,000× | 96.50% | 50,000× | 1 in 12,500 | every round | 1 in 3.20 | 35.00× base | Simulate |
| Max Zero Even | Bonus buy | 1,500× | 96.50% | 50,000× | 1 in 1,852 | 1 in 1.06 | 1 in 1.06 | 52.50× base | Simulate |
Work out the cost of Monster Scream 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 | |
|---|---|---|
| v71 | 96.500% | Active |
Frequently asked
What is the RTP of Monster Scream?
Base spins return 96.50% of the amount wagered over the long run, from the published outcome table for version 71. Its bonus buys return between 96.50% and 96.58%.
What is the max win in Monster Scream and how likely is it?
The top payout is 50,000× the base bet. On a base spin it lands 1 in 2,300,000 spins. In the Hidden buy (300×) 50,000× lands 1 in 4,996 buys.
Does Monster Scream have a bonus buy, and what does it cost?
Yes, 6 buy modes. Capsule Spins: 100× the base bet, 96.50% RTP, an expected cost of 3.50× the base bet per buy. Bonus: 200× the base bet, 96.50% RTP, an expected cost of 7.00× the base bet per buy. Hidden: 300× the base bet, 96.58% RTP, an expected cost of 10.27× the base bet per buy. Super Bonus: 500× the base bet, 96.50% RTP, an expected cost of 17.50× the base bet per buy. Super Capsule Spins: 1,000× the base bet, 96.50% RTP, an expected cost of 35.00× the base bet per buy. Max Zero Even: 1,500× the base bet, 96.50% RTP, an expected cost of 52.50× the base bet per buy.
Is Monster Scream high or low volatility?
High. Its base-mode standard deviation is 50.4× 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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