BRAINS AND BEAKERS slot: RTP and max win
BRAINS AND BEAKERS is a low-volatility slot by KeyTurn Gaming on Stake Engine, released 4 Jul 2026. The top payout is 10,000× the bet. It has 9 bonus buys priced at 50× to 500× the bet; the best returns 96.00%, so each buy costs 2.00× the bet on average over the long run. It is the No. 2698 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 v1. "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 High | Base spin | 1.00× | 96.00% | 5,000× | 1 in 500,001 | 1 in 3.22 | 1 in 58 | 0.04× base | Simulate |
| Base Low | Base spin | 1.00× | 96.20% | 5,000× | 1 in 500,000 | 1 in 1.54 | 1 in 2.90 | 0.04× base | Simulate |
| Bonus Boost High | Boosted spin | 3.00× | 96.01% | 5,000× | 1 in 166,667 | 1 in 1.95 | 1 in 14 | 0.12× base | Simulate |
| Bonus Boost Low | Boosted spin | 3.00× | 95.96% | 5,000× | 1 in 166,667 | 1 in 1.08 | 1 in 2.63 | 0.12× base | Simulate |
| Doubledrop High | Bonus buy | 50× | 95.99% | 5,000× | 1 in 10,000 | – | 1 in 11 | 2.00× base | Simulate |
| Doubledrop Low | Bonus buy | 50× | 96.00% | 5,000× | 1 in 10,000 | – | 1 in 3.09 | 2.00× base | Simulate |
| Regular Bonus High | Bonus buy | 100× | 96.00% | 5,000× | 1 in 5,000 | 1 in 1.33 | 1 in 6.25 | 4.00× base | Simulate |
| Regular Bonus Low | Bonus buy | 100× | 96.00% | 5,000× | 1 in 5,000 | 1 in 1.05 | 1 in 6.30 | 4.00× base | Simulate |
| Mystery Bonus High | Bonus buy | 250× | 96.00% | 5,000× | 1 in 2,000 | 1 in 1.43 | 1 in 8.43 | 10.00× base | Simulate |
| Mystery Bonus Low | Bonus buy | 250× | 96.00% | 5,000× | 1 in 2,000 | 1 in 1.05 | 1 in 2.14 | 10.00× base | Simulate |
| Super Bonus High | Bonus buy | 250× | 96.00% | 5,000× | 1 in 2,000 | 1 in 1.43 | 1 in 8.72 | 10.00× base | Simulate |
| Super Bonus Low | Bonus buy | 250× | 96.00% | 5,000× | 1 in 2,000 | 1 in 1.05 | 1 in 2.32 | 10.00× base | Simulate |
| Rip Spin | Bonus buy | 500× | 95.92% | 10,000× | 1 in 2,000 | 1 in 1.05 | 1 in 2.06 | 20.41× base | Simulate |
Work out the cost of BRAINS AND BEAKERS 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 | |
|---|---|---|
| v1 | 96.000% | Active |
Frequently asked
What is the RTP of BRAINS AND BEAKERS?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 1. Its bonus buys return between 95.92% and 96.00%.
What is the max win in BRAINS AND BEAKERS and how likely is it?
The top payout is 10,000× the base bet. On a base spin the top payout of 5,000× lands 1 in 500,001 spins. In the Doubledrop Low buy (50×) 5,000× lands 1 in 10,000 buys.
Does BRAINS AND BEAKERS have a bonus buy, and what does it cost?
Yes, 9 buy modes. Doubledrop High: 50× the base bet, 95.99% RTP, an expected cost of 2.00× the base bet per buy. Doubledrop Low: 50× the base bet, 96.00% RTP, an expected cost of 2.00× the base bet per buy. Regular Bonus High: 100× the base bet, 96.00% RTP, an expected cost of 4.00× the base bet per buy. Regular Bonus Low: 100× the base bet, 96.00% RTP, an expected cost of 4.00× the base bet per buy. Mystery Bonus High: 250× the base bet, 96.00% RTP, an expected cost of 10.00× the base bet per buy. Mystery Bonus Low: 250× the base bet, 96.00% RTP, an expected cost of 10.00× the base bet per buy. Super Bonus High: 250× the base bet, 96.00% RTP, an expected cost of 10.00× the base bet per buy. Super Bonus Low: 250× the base bet, 96.00% RTP, an expected cost of 10.00× the base bet per buy. Rip Spin: 500× the base bet, 95.92% RTP, an expected cost of 20.41× the base bet per buy.
Is BRAINS AND BEAKERS high or low volatility?
Low. Its base-mode standard deviation is 9.0× 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.