Eye of Osiris slot: RTP and max win
Eye of Osiris is a low-volatility slot by Gainz Games on Stake Engine, released 29 May 2026. Its base game returns 95.00%, below the median Engine slot (96.02%). The top payout is 5,000× the bet; from a base spin it lands about once every 1,250,000 spins. It has 3 bonus buys priced at 50× to 200× the bet; the best returns 95.00%, so each buy costs 2.50× the bet on average over the long run. It is the No. 6117 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 v4. "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× | 95.00% | 5,000× | 1 in 1,250,000 | 1 in 3.25 | 1 in 23 | 0.05× base | Simulate |
| Bonus Hunt | Boosted spin | 2.00× | 95.00% | 5,000× | 1 in 250,000 | 1 in 2.92 | 1 in 11 | 0.10× base | Simulate |
| Scarab Spin | Bonus buy | 50× | 95.00% | 5,000× | 1 in 10,000 | 1 in 3.00 | 1 in 3.19 | 2.50× base | Simulate |
| Suns Awakening | Bonus buy | 100× | 95.00% | 5,000× | 1 in 2,500 | every round | 1 in 3.44 | 5.00× base | Simulate |
| Pharaohs Bounty | Bonus buy | 200× | 95.00% | 5,000× | 1 in 2,500 | every round | 1 in 3.11 | 10.00× base | Simulate |
Work out the cost of Eye of Osiris 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 | |
|---|---|---|
| v4 | 95.000% | Active |
Frequently asked
What is the RTP of Eye of Osiris?
Base spins return 95.00% of the amount wagered over the long run, from the published outcome table for version 4. All 3 of its bonus buys return 95.00%.
What is the max win in Eye of Osiris and how likely is it?
The top payout is 5,000× the base bet. On a base spin it lands 1 in 1,250,000 spins. In the Scarab Spin buy (50×) 5,000× lands 1 in 10,000 buys.
Does Eye of Osiris have a bonus buy, and what does it cost?
Yes, 3 buy modes. Scarab Spin: 50× the base bet, 95.00% RTP, an expected cost of 2.50× the base bet per buy. Suns Awakening: 100× the base bet, 95.00% RTP, an expected cost of 5.00× the base bet per buy. Pharaohs Bounty: 200× the base bet, 95.00% RTP, an expected cost of 10.00× the base bet per buy.
Is Eye of Osiris high or low volatility?
Low. Its base-mode standard deviation is 7.6× the bet, which puts it in the lowest 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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