Biolab Mayhem slot: RTP and max win
Biolab Mayhem is a low-volatility slot by Shockwave Gaming on Stake Engine, released 7 Dec 2025. 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. It has 5 bonus buys priced at 30× to 1,000× the bet; the best returns 96.06%, so each buy costs 39× the bet on average over the long run. It is the No. 2966 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 v46. "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% | 2,032× | 1 in 481,924 | 1 in 2.83 | 1 in 8.89 | 0.04× base | Simulate |
| Boost 2x | Bonus buy | 30× | 96.05% | 6,937× | 1 in 8,722,309 | 1 in 2.67 | 1 in 5.98 | 1.19× base | Simulate |
| Bonus | Bonus buy | 100× | 96.00% | 25,000× | 1 in 15,243,091 | – | 1 in 2.93 | 4.00× base | Simulate |
| Boost 8x | Bonus buy | 100× | 96.00% | 25,000× | 1 in 2,357,449 | 1 in 2.00 | 1 in 5.56 | 4.00× base | Simulate |
| Super Bonus | Bonus buy | 500× | 96.00% | 25,000× | 1 in 243,377 | – | 1 in 2.95 | 20.00× base | Simulate |
| Boost 16x | Bonus buy | 1,000× | 96.06% | 25,000× | 1 in 12,647 | 1 in 2.86 | 1 in 7.62 | 39.45× base | Simulate |
Work out the cost of Biolab 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 | |
|---|---|---|
| v46 | 96.000% | Active |
| v45 | 96.000% |
Frequently asked
What is the RTP of Biolab Mayhem?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 46. Its bonus buys return between 96.00% and 96.06%.
What is the max win in Biolab Mayhem and how likely is it?
The top payout is 25,000× the base bet. On a base spin the top payout of 2,032× lands 1 in 481,924 spins. In the Boost 16x buy (1,000×) 25,000× lands 1 in 12,647 buys.
Does Biolab Mayhem have a bonus buy, and what does it cost?
Yes, 5 buy modes. Boost 2x: 30× the base bet, 96.05% RTP, an expected cost of 1.19× the base bet per buy. Bonus: 100× the base bet, 96.00% RTP, an expected cost of 4.00× the base bet per buy. Boost 8x: 100× the base bet, 96.00% RTP, an expected cost of 4.00× the base bet per buy. Super Bonus: 500× the base bet, 96.00% RTP, an expected cost of 20.00× the base bet per buy. Boost 16x: 1,000× the base bet, 96.06% RTP, an expected cost of 39.45× the base bet per buy.
Is Biolab Mayhem high or low volatility?
Low. Its base-mode standard deviation is 11.0× the bet, which puts it in the lowest 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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