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Solar Storm is a high-volatility slot by ORVANTA on Stake Engine, released 2 Aug 2026. Its base game returns 95.54%, below the median Engine slot (96.02%). The top payout is 10,000× the bet; from a base spin it lands about once every 301,000 spins. It has 4 bonus buys priced at 50× to 250× the bet; the best returns 95.58%, so each buy costs 2.21× 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 v3. "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× | 95.54% | 10,000× | 1 in 301,000 | 1 in 2.77 | 1 in 11 | 0.04× base | Simulate |
| Extra Chance | Boosted spin | 2.00× | 95.52% | 10,000× | 1 in 300,008 | 1 in 2.64 | 1 in 11 | 0.09× base | Simulate |
| Feature Spin | Bonus buy | 50× | 95.58% | 10,000× | 1 in 50,004 | 1 in 1.03 | 1 in 3.69 | 2.21× base | Simulate |
| Regular Bonus | Bonus buy | 100× | 95.57% | 10,000× | 1 in 50,004 | 1 in 1.03 | 1 in 3.67 | 4.43× base | Simulate |
| Random Bonus | Bonus buy | 250× | 95.53% | 10,000× | 1 in 50,012 | every round | 1 in 5.62 | 11.18× base | Simulate |
| Super Bonus | Bonus buy | 250× | 95.51% | 10,000× | 1 in 50,020 | every round | 1 in 5.62 | 11.23× base | Simulate |
Work out the cost of Solar Storm 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 | |
|---|---|---|
| v3 | 95.540% | Active |
Frequently asked
What is the RTP of Solar Storm?
Base spins return 95.54% of the amount wagered over the long run, from the published outcome table for version 3. Its bonus buys return between 95.51% and 95.58%.
What is the max win in Solar Storm and how likely is it?
The top payout is 10,000× the base bet. On a base spin it lands 1 in 301,000 spins. In the Feature Spin buy (50×) 10,000× lands 1 in 50,004 buys.
Does Solar Storm have a bonus buy, and what does it cost?
Yes, 4 buy modes. Feature Spin: 50× the base bet, 95.58% RTP, an expected cost of 2.21× the base bet per buy. Regular Bonus: 100× the base bet, 95.57% RTP, an expected cost of 4.43× the base bet per buy. Random Bonus: 250× the base bet, 95.53% RTP, an expected cost of 11.18× the base bet per buy. Super Bonus: 250× the base bet, 95.51% RTP, an expected cost of 11.23× the base bet per buy.
Is Solar Storm high or low volatility?
High. Its base-mode standard deviation is 43.1× 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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