Star Bound slot: RTP and max win
Star Bound is a medium-volatility slot by v9 Studios on Stake Engine, released 3 Aug 2026. Its base game returns 96.00%, below the median Engine slot (96.02%). The top payout is 10,000× the bet. It has 2 bonus buys priced at 100× to 400× the bet; the best returns 96.00%, so each buy costs 4.00× the bet on average over the long run. It is the No. 4174 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 v7. "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× | 96.00% | 1,169× | 1 in 27,105 | 1 in 3.32 | 1 in 8.66 | 0.04× base | Simulate |
| Black Hole Boost | Boosted spin | 2.00× | 96.00% | 3,682× | 1 in 15,430 | 1 in 4.25 | 1 in 9.26 | 0.08× base | Simulate |
| Star Map | Boosted spin | 5.00× | 96.00% | 5,176× | 1 in 13,491 | 1 in 3.54 | 1 in 22 | 0.20× base | Simulate |
| Bonus | Bonus buy | 100× | 96.00% | 10,000× | 1 in 28,561 | every round | 1 in 4.25 | 4.00× base | Simulate |
| Super Bonus | Bonus buy | 400× | 96.00% | 10,000× | 1 in 2,140 | every round | 1 in 3.72 | 16.00× 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 | |
|---|---|---|
| v7 | 96.000% | Active |
Frequently asked
What is the RTP of Star Bound?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 7. All 2 of its bonus buys return 96.00%.
What is the max win in Star Bound and how likely is it?
The top payout is 10,000× the base bet. On a base spin the top payout of 1,169× lands 1 in 27,105 spins. In the Bonus buy (100×) 10,000× lands 1 in 28,561 buys.
Does Star Bound have a bonus buy, and what does it cost?
Yes, 2 buy modes. Bonus: 100× the base bet, 96.00% RTP, an expected cost of 4.00× the base bet per buy. Super Bonus: 400× the base bet, 96.00% RTP, an expected cost of 16.00× the base bet per buy.
Is Star Bound high or low volatility?
Medium. Its base-mode standard deviation is 15.1× 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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