Spellstrike slot: RTP and max win
Spellstrike is a high-volatility slot by Black Rift on Stake Engine, released 26 Oct 2026. Its base game returns 96.05%, above the median Engine slot (96.02%) and higher than 51% of them. The top payout is 50,000× the bet, bigger than 97% of Engine slots; from a base spin it lands about once every 802,568 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. 1695 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 v13. "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% | 50,000× | 1 in 802,568 | 1 in 6.15 | 1 in 13 | 0.04× base | Simulate |
| Ante | Boosted spin | 3.00× | 96.05% | 50,000× | 1 in 327,761 | 1 in 6.19 | 1 in 14 | 0.12× base | Simulate |
| Hyper | Boosted spin | 5.00× | 96.05% | 50,000× | 1 in 40,245 | 1 in 6.19 | 1 in 14 | 0.20× base | Simulate |
| Monster Raid | Bonus buy | 500× | 96.05% | 50,000× | 1 in 8,214 | – | 1 in 4.12 | 19.75× base | Simulate |
| Mystery | Bonus buy | 750× | 96.05% | 50,000× | 1 in 1,899 | – | 1 in 4.78 | 29.62× base | Simulate |
| Titan Siege | Bonus buy | 1,000× | 96.05% | 50,000× | 1 in 1,074 | – | 1 in 4.12 | 39.50× base | Simulate |
Work out the cost of Spellstrike 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 | |
|---|---|---|
| v13 | 96.050% | Active |
Frequently asked
What is the RTP of Spellstrike?
Base spins return 96.05% of the amount wagered over the long run, from the published outcome table for version 13. All 3 of its bonus buys return 96.05%.
What is the max win in Spellstrike and how likely is it?
The top payout is 50,000× the base bet. On a base spin it lands 1 in 802,568 spins. In the Monster Raid buy (500×) 50,000× lands 1 in 8,214 buys.
Does Spellstrike have a bonus buy, and what does it cost?
Yes, 3 buy modes. Monster Raid: 500× the base bet, 96.05% RTP, an expected cost of 19.75× the base bet per buy. Mystery: 750× the base bet, 96.05% RTP, an expected cost of 29.62× the base bet per buy. Titan Siege: 1,000× the base bet, 96.05% RTP, an expected cost of 39.50× the base bet per buy.
Is Spellstrike high or low volatility?
High. Its base-mode standard deviation is 59.9× 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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