MENTAL KILLERS slot: RTP and max win
MENTAL KILLERS is a medium-volatility slot by 0xEDGE on Stake Engine, released 5 Oct 2026. Its base game returns 96.11%, above the median Engine slot (96.02%) and higher than 54% of them. The top payout is 20,000× the bet, bigger than 59% of Engine slots; from a base spin it lands about once every 5,000,010 spins. It has 5 bonus buys priced at 58× to 1,000× the bet; the best returns 96.11%, so each buy costs 2.26× the bet on average over the long run. It is the No. 756 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× | 96.11% | 20,000× | 1 in 5,000,010 | 1 in 7.37 | 1 in 54 | 0.04× base | Simulate |
| Ante 5x | Boosted spin | 5.00× | 96.11% | 20,000× | 1 in 2,000,000 | 1 in 5.17 | 1 in 17 | 0.19× base | Simulate |
| Bonus Chance | Bonus buy | 58× | 96.11% | 20,000× | 1 in 200,016 | 1 in 3.33 | 1 in 4.25 | 2.26× base | Simulate |
| Bonus | Bonus buy | 100× | 96.11% | 20,000× | 1 in 50,000 | 1 in 1.14 | 1 in 2.61 | 3.89× base | Simulate |
| Triple Spin | Bonus buy | 150× | 96.11% | 20,000× | 1 in 100,025 | 1 in 1.67 | 1 in 5.33 | 5.84× base | Simulate |
| Super Bonus | Bonus buy | 500× | 96.11% | 20,000× | 1 in 20,001 | 1 in 1.64 | 1 in 5.05 | 19.47× base | Simulate |
| Quad Spin | Bonus buy | 1,000× | 96.11% | 20,000× | 1 in 50,000 | 1 in 1.82 | 1 in 4.74 | 38.90× base | Simulate |
Work out the cost of MENTAL KILLERS 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 | |
|---|---|---|
| v2 | 96.110% | Active |
Frequently asked
What is the RTP of MENTAL KILLERS?
Base spins return 96.11% of the amount wagered over the long run, from the published outcome table for version 2. All 5 of its bonus buys return 96.11%.
What is the max win in MENTAL KILLERS and how likely is it?
The top payout is 20,000× the base bet. On a base spin it lands 1 in 5,000,010 spins. In the Bonus Chance buy (58×) 20,000× lands 1 in 200,016 buys.
Does MENTAL KILLERS have a bonus buy, and what does it cost?
Yes, 5 buy modes. Bonus Chance: 58× the base bet, 96.11% RTP, an expected cost of 2.26× the base bet per buy. Bonus: 100× the base bet, 96.11% RTP, an expected cost of 3.89× the base bet per buy. Triple Spin: 150× the base bet, 96.11% RTP, an expected cost of 5.84× the base bet per buy. Super Bonus: 500× the base bet, 96.11% RTP, an expected cost of 19.47× the base bet per buy. Quad Spin: 1,000× the base bet, 96.11% RTP, an expected cost of 38.90× the base bet per buy.
Is MENTAL KILLERS high or low volatility?
Medium. Its base-mode standard deviation is 16.6× 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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