Everest Expedition slot: RTP and max win
Everest Expedition is a medium-volatility slot by Ferista Studio on Stake Engine, released 20 Jul 2026. Its base game returns 96.70%, above the median Engine slot (96.02%) and higher than 86% of them. The top payout is 15,000× the bet, bigger than 50% of Engine slots; from a base spin it lands about once every 10,000,000 spins. It has 4 bonus buys priced at 25× to 500× the bet; the best returns 96.70%, so each buy costs 0.83× the bet on average over the long run. It is the No. 5839 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 v20. "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% | 15,000× | 1 in 10,000,000 | 1 in 4.00 | 1 in 10 | 0.03× base | Simulate |
| 3x Bonus Chance | Boosted spin | 2.00× | 96.70% | 15,000× | 1 in 10,000,000 | 1 in 3.33 | 1 in 7.69 | 0.07× base | Simulate |
| Rune | Boosted spin | 10× | 96.70% | 15,000× | 1 in 10,000,000 | 1 in 2.94 | 1 in 8.33 | 0.33× base | Simulate |
| Expanding Wild | Bonus buy | 25× | 96.70% | 15,000× | 1 in 10,000,000 | 1 in 2.63 | 1 in 5.56 | 0.83× base | Simulate |
| 3Scatter Bonus | Bonus buy | 100× | 96.70% | 15,000× | 1 in 10,000,000 | – | 1 in 5.00 | 3.30× base | Simulate |
| 4Scatter Bonus | Bonus buy | 250× | 96.70% | 15,000× | 1 in 10,000,000 | – | 1 in 5.00 | 8.25× base | Simulate |
| 5Scatter Bonus | Bonus buy | 500× | 96.70% | 15,000× | 1 in 10,000,000 | – | 1 in 5.00 | 16.50× base | Simulate |
Work out the cost of Everest Expedition 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 | |
|---|---|---|
| v20 | 96.700% | Active |
Frequently asked
What is the RTP of Everest Expedition?
Base spins return 96.70% of the amount wagered over the long run, from the published outcome table for version 20. All 4 of its bonus buys return 96.70%.
What is the max win in Everest Expedition and how likely is it?
The top payout is 15,000× the base bet. On a base spin it lands 1 in 10,000,000 spins. In the Expanding Wild buy (25×) 15,000× lands 1 in 10,000,000 buys.
Does Everest Expedition have a bonus buy, and what does it cost?
Yes, 4 buy modes. Expanding Wild: 25× the base bet, 96.70% RTP, an expected cost of 0.83× the base bet per buy. 3Scatter Bonus: 100× the base bet, 96.70% RTP, an expected cost of 3.30× the base bet per buy. 4Scatter Bonus: 250× the base bet, 96.70% RTP, an expected cost of 8.25× the base bet per buy. 5Scatter Bonus: 500× the base bet, 96.70% RTP, an expected cost of 16.50× the base bet per buy.
Is Everest Expedition high or low volatility?
Medium. Its base-mode standard deviation is 19.7× 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.
Slots with similar math to Everest Expedition
Matched on volatility, max win, RTP and whether there's a bonus buy. Not on theme.
Agent RageMeta Gaming RTP96.70%Max win15,000×Volatility
Scarab SwarmIMWIW RTP96.70%Max win15,000×Volatility
Star WardensTwist Gaming RTP96.70%Max win15,000×Volatility
OVERGROWNJuicebox RTP96.70%Max win15,000×Volatility
Gold DiggerAnarchy Studios RTP96.65%Max win15,000×Volatility
Lunatic LodgeChatty Games RTP96.50%Max win15,000×Volatility