SWAT Siege slot: RTP and max win
SWAT Siege is a high-volatility slot by Black Rift on Stake Engine, released 27 Sep 2026. Its base game returns 96.05%, above the median Engine slot (96.02%) and higher than 51% of them. The top payout is 40,000× the bet, bigger than 84% of Engine slots; from a base spin it lands about once every 4,000,000 spins. It has 3 bonus buys priced at 500× to 1,000× the bet; the best returns 96.05%, so each buy costs 20× the bet on average over the long run. It is the No. 3467 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 v50. "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× | 96.05% | 40,000× | 1 in 4,000,000 | 1 in 3.08 | 1 in 44 | 0.04× base | Simulate |
| Ante | Boosted spin | 3.00× | 96.05% | 40,000× | 1 in 1,333,333 | 1 in 4.49 | 1 in 89 | 0.12× base | Simulate |
| Hyper | Boosted spin | 5.00× | 96.05% | 40,000× | 1 in 799,361 | 1 in 4.49 | 1 in 87 | 0.20× base | Simulate |
| Bomb Site Raid | Bonus buy | 500× | 96.05% | 40,000× | 1 in 7,998 | – | 1 in 5.72 | 19.75× base | Simulate |
| Mystery Mission | Bonus buy | 750× | 96.05% | 40,000× | 1 in 5,332 | – | 1 in 5.03 | 29.62× base | Simulate |
| Tactical Overwatch | Bonus buy | 1,000× | 96.05% | 40,000× | 1 in 3,999 | – | 1 in 5.47 | 39.50× 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 | |
|---|---|---|
| v50 | 96.050% | Active |
Frequently asked
What is the RTP of SWAT Siege?
Base spins return 96.05% of the amount wagered over the long run, from the published outcome table for version 50. All 3 of its bonus buys return 96.05%.
What is the max win in SWAT Siege and how likely is it?
The top payout is 40,000× the base bet. On a base spin it lands 1 in 4,000,000 spins. In the Bomb Site Raid buy (500×) 40,000× lands 1 in 7,998 buys.
Does SWAT Siege have a bonus buy, and what does it cost?
Yes, 3 buy modes. Bomb Site Raid: 500× the base bet, 96.05% RTP, an expected cost of 19.75× the base bet per buy. Mystery Mission: 750× the base bet, 96.05% RTP, an expected cost of 29.62× the base bet per buy. Tactical Overwatch: 1,000× the base bet, 96.05% RTP, an expected cost of 39.50× the base bet per buy.
Is SWAT Siege high or low volatility?
High. Its base-mode standard deviation is 60.0× the bet, which puts it in the highest 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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