Coasters slot: RTP and max win
Coasters is a high-volatility slot by Butter on Stake Engine, released 17 Sep 2026. Its base game returns 96.70%, above the median Engine slot (96.02%) and higher than 86% 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 20,802,858 spins. It has 5 bonus buys priced at 100× to 1,000× the bet; the best returns 96.70%, so each buy costs 3.30× the bet on average over the long run. It is the No. 144 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 v89. "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× | 96.70% | 50,000× | 1 in 20,802,858 | 1 in 3.89 | 1 in 8.91 | 0.03× base | Simulate |
| Double Chance | Boosted spin | 3.00× | 96.69% | 50,000× | 1 in 20,000,708 | 1 in 2.87 | 1 in 7.68 | 0.10× base | Simulate |
| Bonus | Bonus buy | 100× | 96.70% | 50,000× | 1 in 2,855 | every round | 1 in 8.91 | 3.30× base | Simulate |
| Savage Spins | Bonus buy | 100× | 96.70% | 50,000× | 1 in 7,000 | 1 in 49 | 1 in 49 | 3.30× base | Simulate |
| Super Bonus | Bonus buy | 200× | 96.70% | 50,000× | 1 in 1,894 | every round | 1 in 9.26 | 6.60× base | Simulate |
| Random Bonus | Bonus buy | 500× | 96.70% | 50,000× | 1 in 2,707 | every round | 1 in 6.08 | 16.50× base | Simulate |
| Full Tilt Spins | Bonus buy | 1,000× | 96.70% | 50,000× | 1 in 1,111 | every round | 1 in 5.68 | 33.00× 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 | |
|---|---|---|
| v89 | 96.700% | Active |
Frequently asked
What is the RTP of Coasters?
Base spins return 96.70% of the amount wagered over the long run, from the published outcome table for version 89. All 5 of its bonus buys return 96.70%.
What is the max win in Coasters and how likely is it?
The top payout is 50,000× the base bet. On a base spin it lands 1 in 20,802,858 spins. In the Savage Spins buy (100×) 50,000× lands 1 in 7,000 buys.
Does Coasters have a bonus buy, and what does it cost?
Yes, 5 buy modes. Bonus: 100× the base bet, 96.70% RTP, an expected cost of 3.30× the base bet per buy. Savage Spins: 100× the base bet, 96.70% RTP, an expected cost of 3.30× the base bet per buy. Super Bonus: 200× the base bet, 96.70% RTP, an expected cost of 6.60× the base bet per buy. Random Bonus: 500× the base bet, 96.70% RTP, an expected cost of 16.50× the base bet per buy. Full Tilt Spins: 1,000× the base bet, 96.70% RTP, an expected cost of 33.00× the base bet per buy.
Is Coasters high or low volatility?
High. Its base-mode standard deviation is 29.9× 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.
Slots with similar math to Coasters
Matched on volatility, max win, RTP and whether there's a bonus buy. Not on theme.
Vampire AnthemHigh Jackers RTP96.70%Max win50,000×Volatility
Yuzu SpringsDarkframe RTP96.70%Max win50,000×Volatility
Fat CatLimitless Studios RTP96.70%Max win50,000×Volatility
Sky LordGator Rolls RTP96.70%Max win50,000×Volatility
Bikers ClubKorky Games RTP96.70%Max win50,000×Volatility
Hathors BlessingGlass Cannon RTP96.70%Max win50,000×Volatility