Slime Lab slot: RTP and max win
Slime Lab is a low-volatility slot by Dads of Gambling on Stake Engine, released 2 Sep 2026. Its base game returns 96.50%, above the median Engine slot (96.02%) and higher than 66% of them. The top payout is 10,000× the bet; from a base spin it lands about once every 1,000,000 spins. It has 3 bonus buys priced at 50× to 100× the bet; the best returns 96.50%, so each buy costs 1.75× the bet on average over the long run. It is the No. 6122 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× | 96.50% | 10,000× | 1 in 1,000,000 | 1 in 3.44 | 1 in 23 | 0.04× base | Simulate |
| Cold Fusion | Base spin | 1.00× | 96.50% | 10,000× | 1 in 2,000,001 | 1 in 2.18 | 1 in 44 | 0.04× base | Simulate |
| Vial Boost | Boosted spin | 1.50× | 96.50% | 10,000× | 1 in 666,667 | 1 in 3.44 | 1 in 25 | 0.05× base | Simulate |
| Pure Culture | Bonus buy | 50× | 96.50% | 10,000× | 1 in 20,000 | 1 in 1.42 | 1 in 8.69 | 1.75× base | Simulate |
| Get Bonus Meltdown | Bonus buy | 100× | 96.50% | 10,000× | 1 in 10,000 | – | 1 in 5.76 | 3.50× base | Simulate |
| Get Bonus Overreaction | Bonus buy | 100× | 96.50% | 10,000× | 1 in 10,000 | – | 1 in 4.44 | 3.50× base | Simulate |
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 | 96.500% | Active |
Frequently asked
What is the RTP of Slime Lab?
Base spins return 96.50% of the amount wagered over the long run, from the published outcome table for version 2. All 3 of its bonus buys return 96.50%.
What is the max win in Slime Lab and how likely is it?
The top payout is 10,000× the base bet. On a base spin it lands 1 in 1,000,000 spins. In the Pure Culture buy (50×) 10,000× lands 1 in 20,000 buys.
Does Slime Lab have a bonus buy, and what does it cost?
Yes, 3 buy modes. Pure Culture: 50× the base bet, 96.50% RTP, an expected cost of 1.75× the base bet per buy. Get Bonus Meltdown: 100× the base bet, 96.50% RTP, an expected cost of 3.50× the base bet per buy. Get Bonus Overreaction: 100× the base bet, 96.50% RTP, an expected cost of 3.50× the base bet per buy.
Is Slime Lab high or low volatility?
Low. Its base-mode standard deviation is 12.7× 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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