Boss Raid! slot: RTP and max win
Boss Raid! is a low-volatility slot by Luna Vault on Stake Engine, released 15 Aug 2026. Its base game returns 96.40%, above the median Engine slot (96.02%) and higher than 64% of them. The top payout is 5,000× the bet; from a base spin it lands about once every 833,333 spins. It has 2 bonus buys priced at 135× to 176× the bet; the best returns 96.40%, so each buy costs 4.86× the bet on average over the long run. It is the No. 4654 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× | 96.40% | 5,000× | 1 in 833,333 | 1 in 3.83 | 1 in 7.49 | 0.04× base | Simulate |
| Enhancer | Boosted spin | 1.35× | 96.40% | 5,000× | 1 in 617,284 | 1 in 3.83 | 1 in 8.02 | 0.05× base | Simulate |
| Bonus | Bonus buy | 135× | 96.40% | 5,000× | 1 in 18,519 | – | 1 in 3.21 | 4.86× base | Simulate |
| Loot Vault | Bonus buy | 176× | 96.40% | 5,000× | 1 in 94,589 | – | 1 in 2.27 | 6.34× 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 | 96.400% | Active |
Frequently asked
What is the RTP of Boss Raid!?
Base spins return 96.40% of the amount wagered over the long run, from the published outcome table for version 2. All 2 of its bonus buys return 96.40%.
What is the max win in Boss Raid! and how likely is it?
The top payout is 5,000× the base bet. On a base spin it lands 1 in 833,333 spins. In the Bonus buy (135×) 5,000× lands 1 in 18,519 buys.
Does Boss Raid! have a bonus buy, and what does it cost?
Yes, 2 buy modes. Bonus: 135× the base bet, 96.40% RTP, an expected cost of 4.86× the base bet per buy. Loot Vault: 176× the base bet, 96.40% RTP, an expected cost of 6.34× the base bet per buy.
Is Boss Raid! high or low volatility?
Low. Its base-mode standard deviation is 7.1× 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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