Spellbound slot: RTP and max win
Spellbound is a medium-volatility slot by Scatterbrain Games on Stake Engine, released 20 Jul 2026. Its base game returns 95.05%, below the median Engine slot (96.02%). The top payout is 15,000× the bet, bigger than 50% of Engine slots; from a base spin it lands about once every 10,799,439 spins. It has 4 bonus buys priced at 100× to 400× the bet; the best returns 95.05%, so each buy costs 4.95× the bet on average over the long run. It is the No. 2519 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 v11. "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× | 95.05% | 15,000× | 1 in 10,799,439 | 1 in 4.24 | 1 in 9.70 | 0.05× base | Simulate |
| Ante | Boosted spin | 3.00× | 95.05% | 15,000× | 1 in 4,515,211 | 1 in 4.62 | 1 in 47 | 0.15× base | Simulate |
| Magic Battle | Bonus buy | 100× | 95.05% | 15,000× | 1 in 125,000 | 1 in 2.22 | 1 in 3.33 | 4.95× base | Simulate |
| Bonus | Bonus buy | 150× | 95.03% | 15,000× | 1 in 80,016 | – | 1 in 4.00 | 7.45× base | Simulate |
| Risk It All | Bonus buy | 300× | 95.05% | 15,000× | 1 in 40,000 | 1 in 2.00 | 1 in 4.00 | 14.85× base | Simulate |
| Super Bonus | Bonus buy | 400× | 95.03% | 15,000× | 1 in 30,007 | – | 1 in 4.00 | 19.88× 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 | |
|---|---|---|
| v11 | 95.050% | Active |
Frequently asked
What is the RTP of Spellbound?
Base spins return 95.05% of the amount wagered over the long run, from the published outcome table for version 11. Its bonus buys return between 95.03% and 95.05%.
What is the max win in Spellbound and how likely is it?
The top payout is 15,000× the base bet. On a base spin it lands 1 in 10,799,439 spins. In the Magic Battle buy (100×) 15,000× lands 1 in 125,000 buys.
Does Spellbound have a bonus buy, and what does it cost?
Yes, 4 buy modes. Magic Battle: 100× the base bet, 95.05% RTP, an expected cost of 4.95× the base bet per buy. Bonus: 150× the base bet, 95.03% RTP, an expected cost of 7.45× the base bet per buy. Risk It All: 300× the base bet, 95.05% RTP, an expected cost of 14.85× the base bet per buy. Super Bonus: 400× the base bet, 95.03% RTP, an expected cost of 19.88× the base bet per buy.
Is Spellbound high or low volatility?
Medium. Its base-mode standard deviation is 13.8× 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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