Monster Party slot: RTP and max win
Monster Party is a high-volatility slot by BABA on Stake Engine, released 2 May 2026. Its base game returns 96.00%, below the median Engine slot (96.02%). The top payout is 20,000× the bet, bigger than 59% of Engine slots; from a base spin it lands about once every 6,729,183 spins. It has 5 bonus buys priced at 50× to 500× the bet; the best returns 96.32%, so each buy costs 18× the bet on average over the long run. It is the No. 1237 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 v4. "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% | 20,000× | 1 in 6,729,183 | 1 in 4.17 | 1 in 8.25 | 0.04× base | Simulate |
| Hunt | Boosted spin | 5.00× | 96.00% | 20,000× | 1 in 343,750 | 1 in 6.86 | 1 in 9.80 | 0.20× base | Simulate |
| Super Spin | Bonus buy | 50× | 96.01% | 20,000× | 1 in 19,458 | 1 in 4.20 | 1 in 11 | 2.00× base | Simulate |
| Bonus | Bonus buy | 100× | 96.11% | 20,000× | 1 in 20,009 | – | 1 in 3.95 | 3.89× base | Simulate |
| Monster Spin | Bonus buy | 250× | 96.14% | 20,000× | 1 in 19,422 | – | 1 in 4.54 | 9.66× base | Simulate |
| Super Bonus | Bonus buy | 250× | 96.13% | 20,000× | 1 in 22,662 | – | 1 in 3.81 | 9.68× base | Simulate |
| Monster Bonus | Bonus buy | 500× | 96.32% | 20,000× | 1 in 18,096 | – | 1 in 4.38 | 18.42× base | Simulate |
Work out the cost of Monster Party 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 | |
|---|---|---|
| v4 | 95.997% | Active |
Frequently asked
What is the RTP of Monster Party?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 4. Its bonus buys return between 96.01% and 96.32%.
What is the max win in Monster Party and how likely is it?
The top payout is 20,000× the base bet. On a base spin it lands 1 in 6,729,183 spins. In the Monster Bonus buy (500×) 20,000× lands 1 in 18,096 buys.
Does Monster Party have a bonus buy, and what does it cost?
Yes, 5 buy modes. Super Spin: 50× the base bet, 96.01% RTP, an expected cost of 2.00× the base bet per buy. Bonus: 100× the base bet, 96.11% RTP, an expected cost of 3.89× the base bet per buy. Monster Spin: 250× the base bet, 96.14% RTP, an expected cost of 9.66× the base bet per buy. Super Bonus: 250× the base bet, 96.13% RTP, an expected cost of 9.68× the base bet per buy. Monster Bonus: 500× the base bet, 96.32% RTP, an expected cost of 18.42× the base bet per buy.
Is Monster Party high or low volatility?
High. Its base-mode standard deviation is 27.1× 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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