Monster Heist slot: RTP and max win
Monster Heist is a medium-volatility slot by Arcvenn on Stake Engine, released 1 Oct 2026. Its base game returns 96.00%, below the median Engine slot (96.02%). The top payout is 2,000× the bet. It has 1 bonus buy priced at 95× the bet; the best returns 96.00%, so each buy costs 3.80× the bet on average over the long run.
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 | |
|---|---|---|---|---|---|---|---|---|---|
| Standard | Base spin | 1.00× | 96.00% | 1,000× | 1 in 29,331 | 1 in 2.54 | 1 in 45 | 0.04× base | Simulate |
| Ante | Boosted spin | 1.50× | 96.00% | 1,500× | 1 in 52,707 | 1 in 2.76 | 1 in 25 | 0.06× base | Simulate |
| Hunt | Boosted spin | 2.00× | 96.00% | 2,000× | 1 in 22,246 | 1 in 2.19 | 1 in 20 | 0.08× base | Simulate |
| Bonus | Bonus buy | 95× | 96.00% | 1,000× | 1 in 742 | 1 in 1.01 | 1 in 3.35 | 3.80× base | Simulate |
Work out the cost of Monster Heist 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 | 96.000% | Active |
Frequently asked
What is the RTP of Monster Heist?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 2. Its bonus buy returns 96.00%.
What is the max win in Monster Heist and how likely is it?
The top payout is 2,000× the base bet. On a base spin the top payout of 1,000× lands 1 in 29,331 spins. In the Bonus buy (95×) 1,000× lands 1 in 742 buys.
Does Monster Heist have a bonus buy, and what does it cost?
Yes, 1 buy mode. Bonus: 95× the base bet, 96.00% RTP, an expected cost of 3.80× the base bet per buy.
Is Monster Heist high or low volatility?
Medium. Its base-mode standard deviation is 15.3× 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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