Osaka Rush slot: RTP and max win
Osaka Rush is a medium-volatility slot by Slots Factory on Stake Engine, released 2 Sep 2026. Its base game returns 92.00%, below the median Engine slot (96.02%). The top payout is 50,000× the bet, bigger than 97% of Engine slots; from a base spin it lands about once every 50,000,000 spins. It has 3 bonus buys priced at 150× to 500× the bet; the best returns 92.00%, so each buy costs 12× the bet on average over the long run. It is the No. 5764 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 v3. "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× | 92.00% | 50,000× | 1 in 50,000,000 | 1 in 3.38 | 1 in 47 | 0.08× base | Simulate |
| Bonus 100 | Boosted spin | 3.00× | 92.00% | 50,000× | 1 in 16,666,667 | 1 in 3.11 | 1 in 21 | 0.24× base | Simulate |
| Bonus 200 | Boosted spin | 6.00× | 92.00% | 50,000× | 1 in 8,333,333 | 1 in 2.82 | 1 in 14 | 0.48× base | Simulate |
| Bonus 150 | Bonus buy | 150× | 92.00% | 50,000× | 1 in 333,333 | every round | 1 in 5.00 | 12.00× base | Simulate |
| Bonus 300 | Bonus buy | 300× | 92.00% | 50,000× | 1 in 166,667 | every round | 1 in 3.42 | 24.00× base | Simulate |
| Bonus 500 | Bonus buy | 500× | 92.00% | 50,000× | 1 in 100,000 | every round | 1 in 4.36 | 40.00× 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 | |
|---|---|---|
| v3 | 92.000% | Active |
Frequently asked
What is the RTP of Osaka Rush?
Base spins return 92.00% of the amount wagered over the long run, from the published outcome table for version 3. All 3 of its bonus buys return 92.00%.
What is the max win in Osaka Rush and how likely is it?
The top payout is 50,000× the base bet. On a base spin it lands 1 in 50,000,000 spins. In the Bonus 150 buy (150×) 50,000× lands 1 in 333,333 buys.
Does Osaka Rush have a bonus buy, and what does it cost?
Yes, 3 buy modes. Bonus 150: 150× the base bet, 92.00% RTP, an expected cost of 12.00× the base bet per buy. Bonus 300: 300× the base bet, 92.00% RTP, an expected cost of 24.00× the base bet per buy. Bonus 500: 500× the base bet, 92.00% RTP, an expected cost of 40.00× the base bet per buy.
Is Osaka Rush high or low volatility?
Medium. Its base-mode standard deviation is 14.0× 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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