Monkey Mayhem slot: RTP and max win
Monkey Mayhem is a medium-volatility slot by Wild Grin Games on Stake Engine, released 29 Oct 2026. Its base game returns 96.10%, above the median Engine slot (96.02%) and higher than 53% 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 8,333,339 spins. It has 6 bonus buys priced at 100× to 2,000× the bet; the best returns 96.10%, so each buy costs 20× the bet on average over the long run. It is the No. 3757 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× | 96.10% | 50,000× | 1 in 8,333,339 | 1 in 2.98 | 1 in 55 | 0.04× base | Simulate |
| Bonus Hunt | Boosted spin | 3.00× | 96.10% | 50,000× | 1 in 2,777,778 | 1 in 2.93 | 1 in 17 | 0.12× base | Simulate |
| Bonus | Bonus buy | 100× | 96.08% | 50,000× | 1 in 500,000 | – | 1 in 6.31 | 3.92× base | Simulate |
| Super Bonus | Bonus buy | 300× | 96.09% | 50,000× | 1 in 166,667 | – | 1 in 2.94 | 11.72× base | Simulate |
| Ball Frenzy | Bonus buy | 500× | 96.10% | 50,000× | 1 in 100,000 | – | 1 in 4.99 | 19.52× base | Simulate |
| Big Drop | Bonus buy | 500× | 96.10% | 50,000× | 1 in 59,988 | – | 1 in 4.19 | 19.52× base | Simulate |
| Hidden | Bonus buy | 500× | 96.10% | 50,000× | 1 in 100,000 | 1 in 1.82 | 1 in 3.30 | 19.50× base | Simulate |
| Bullseye | Bonus buy | 2,000× | 96.10% | 50,000× | 1 in 1,111 | – | 1 in 2.19 | 78.00× base | Simulate |
Work out the cost of Monkey Mayhem 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 | 96.100% | Active |
Frequently asked
What is the RTP of Monkey Mayhem?
Base spins return 96.10% of the amount wagered over the long run, from the published outcome table for version 4. Its bonus buys return between 96.08% and 96.10%.
What is the max win in Monkey Mayhem and how likely is it?
The top payout is 50,000× the base bet. On a base spin it lands 1 in 8,333,339 spins. In the Hidden buy (500×) 50,000× lands 1 in 100,000 buys.
Does Monkey Mayhem have a bonus buy, and what does it cost?
Yes, 6 buy modes. Bonus: 100× the base bet, 96.08% RTP, an expected cost of 3.92× the base bet per buy. Super Bonus: 300× the base bet, 96.09% RTP, an expected cost of 11.72× the base bet per buy. Ball Frenzy: 500× the base bet, 96.10% RTP, an expected cost of 19.52× the base bet per buy. Big Drop: 500× the base bet, 96.10% RTP, an expected cost of 19.52× the base bet per buy. Hidden: 500× the base bet, 96.10% RTP, an expected cost of 19.50× the base bet per buy. Bullseye: 2,000× the base bet, 96.10% RTP, an expected cost of 78.00× the base bet per buy.
Is Monkey Mayhem high or low volatility?
Medium. Its base-mode standard deviation is 20.0× 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.
Slots with similar math to Monkey Mayhem
Matched on volatility, max win, RTP and whether there's a bonus buy. Not on theme.
Underwater LoveNoctra Games RTP96.02%Max win50,000×Volatility
Candy CatchStackhaus RTP96.10%Max win50,000×Volatility
Last DropArshoPlay RTP96.00%Max win50,000×Volatility
Fat EddieObscure Studio RTP96.05%Max win50,000×Volatility
Sonar SalvageWildCatch Studio RTP96.00%Max win50,000×Volatility
Crimson ThunderPigeon Studios RTP96.00%Max win50,000×Volatility