Spartan Stacks slot: RTP and max win
Spartan Stacks is a high-volatility slot by Creative City on Stake Engine, released 17 Jun 2026. Its base game returns 96.00%, below the median Engine slot (96.02%). The top payout is 30,000× the bet, bigger than 83% of Engine slots. It has 7 bonus buys priced at 25× to 500× the bet; the best returns 96.00%, so each buy costs 1.00× the bet on average over the long run. It is the No. 1194 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 v6. "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% | 15,000× | 1 in 3,000,009 | 1 in 5.36 | 1 in 96 | 0.04× base | Simulate |
| Extra Chance | Boosted spin | 2.00× | 96.00% | 15,000× | 1 in 1,500,002 | 1 in 6.58 | 1 in 52 | 0.08× base | Simulate |
| Degen | Bonus buy | 25× | 96.00% | 30,000× | 1 in 240,000 | 1 in 6.45 | 1 in 26 | 1.00× base | Simulate |
| Bonus | Bonus buy | 100× | 96.00% | 15,000× | 1 in 30,000 | – | 1 in 4.52 | 4.00× base | Simulate |
| Super Degen | Bonus buy | 100× | 96.00% | 30,000× | 1 in 6,000 | 1 in 7.15 | 1 in 30 | 4.00× base | Simulate |
| Mega Zap Spins | Bonus buy | 200× | 96.00% | 15,000× | 1 in 750 | 1 in 1.50 | 1 in 12 | 8.00× base | Simulate |
| Mysterybonus | Bonus buy | 300× | 96.00% | 15,000× | 1 in 626 | – | 1 in 4.96 | 12.00× base | Simulate |
| Super Bonus | Bonus buy | 300× | 96.00% | 15,000× | 1 in 10,000 | – | 1 in 4.10 | 12.00× base | Simulate |
| Riskymysterybonus | Bonus buy | 500× | 96.00% | 15,000× | 1 in 177 | 1 in 1.19 | 1 in 5.60 | 20.00× base | Simulate |
Work out the cost of Spartan Stacks 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 | |
|---|---|---|
| v6 | 96.000% | Active |
Frequently asked
What is the RTP of Spartan Stacks?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 6. All 7 of its bonus buys return 96.00%.
What is the max win in Spartan Stacks and how likely is it?
The top payout is 30,000× the base bet. On a base spin the top payout of 15,000× lands 1 in 3,000,009 spins. In the Degen buy (25×) 30,000× lands 1 in 240,000 buys.
Does Spartan Stacks have a bonus buy, and what does it cost?
Yes, 7 buy modes. Degen: 25× the base bet, 96.00% RTP, an expected cost of 1.00× the base bet per buy. Bonus: 100× the base bet, 96.00% RTP, an expected cost of 4.00× the base bet per buy. Super Degen: 100× the base bet, 96.00% RTP, an expected cost of 4.00× the base bet per buy. Mega Zap Spins: 200× the base bet, 96.00% RTP, an expected cost of 8.00× the base bet per buy. Mysterybonus: 300× the base bet, 96.00% RTP, an expected cost of 12.00× the base bet per buy. Super Bonus: 300× the base bet, 96.00% RTP, an expected cost of 12.00× the base bet per buy. Riskymysterybonus: 500× the base bet, 96.00% RTP, an expected cost of 20.00× the base bet per buy.
Is Spartan Stacks high or low volatility?
High. Its base-mode standard deviation is 32.4× 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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