Forbidden Lecture slot: RTP and max win
Forbidden Lecture is a medium-volatility slot by 3One Studios on Stake Engine, released 1 Aug 2026. Its base game returns 90.10%, below the median Engine slot (96.02%). The top payout is 2,500× the bet; from a base spin it lands about once every 100,713 spins. It has 3 bonus buys priced at 20× to 500× the bet; the best returns 90.10%, so each buy costs 1.98× the bet on average over the long run. It is the No. 6087 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 v7. "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× | 90.10% | 2,500× | 1 in 100,713 | 1 in 2.09 | 1 in 7.63 | 0.10× base | Simulate |
| Bonus | Bonus buy | 20× | 90.10% | 2,500× | 1 in 1,568 | – | 1 in 65 | 1.98× base | Simulate |
| Bonus Super | Bonus buy | 100× | 90.10% | 2,500× | 1 in 1,468 | – | 1 in 4.64 | 9.90× base | Simulate |
| Bonus Ultra | Bonus buy | 500× | 90.10% | 2,500× | 1 in 61 | – | 1 in 5.04 | 49.50× base | Simulate |
Work out the cost of Forbidden Lecture 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 | |
|---|---|---|
| v7 | 90.100% | Active |
Frequently asked
What is the RTP of Forbidden Lecture?
Base spins return 90.10% of the amount wagered over the long run, from the published outcome table for version 7. All 3 of its bonus buys return 90.10%.
What is the max win in Forbidden Lecture and how likely is it?
The top payout is 2,500× the base bet. On a base spin it lands 1 in 100,713 spins. In the Bonus buy (20×) 2,500× lands 1 in 1,568 buys.
Does Forbidden Lecture have a bonus buy, and what does it cost?
Yes, 3 buy modes. Bonus: 20× the base bet, 90.10% RTP, an expected cost of 1.98× the base bet per buy. Bonus Super: 100× the base bet, 90.10% RTP, an expected cost of 9.90× the base bet per buy. Bonus Ultra: 500× the base bet, 90.10% RTP, an expected cost of 49.50× the base bet per buy.
Is Forbidden Lecture high or low volatility?
Medium. Its base-mode standard deviation is 17.3× 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.
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