Core Breach slot: RTP and max win
Core Breach is a high-volatility slot by Big Ducking Wings on Stake Engine, released 17 Sep 2026. Its base game returns 94.99%, 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 3,333,332 spins. It has 4 bonus buys priced at 100× to 200× the bet; the best returns 95.00%, so each buy costs 5.00× the bet on average over the long run. It is the No. 4138 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 v2. "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× | 94.99% | 50,000× | 1 in 3,333,332 | 1 in 3.36 | 1 in 6.36 | 0.05× base | Simulate |
| Feature Spins | Boosted spin | 3.00× | 95.01% | 50,000× | 1 in 1,111,111 | 1 in 2.88 | 1 in 9.54 | 0.15× base | Simulate |
| Containment | Bonus buy | 100× | 95.00% | 50,000× | 1 in 98,039 | – | 1 in 5.04 | 5.00× base | Simulate |
| Reactor Roulette | Bonus buy | 180× | 95.00% | 50,000× | 1 in 18,519 | – | 1 in 5.58 | 9.00× base | Simulate |
| Chain Reaction | Bonus buy | 200× | 95.00% | 50,000× | 1 in 25,000 | – | 1 in 4.56 | 10.00× base | Simulate |
| Mystery Meltdown | Bonus buy | 200× | 95.00% | 50,000× | 1 in 25,000 | 1 in 2.00 | 1 in 5.77 | 10.00× base | Simulate |
Work out the cost of Core Breach 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 | |
|---|---|---|
| v2 | 94.990% | Active |
Frequently asked
What is the RTP of Core Breach?
Base spins return 94.99% of the amount wagered over the long run, from the published outcome table for version 2. All 4 of its bonus buys return 95.00%.
What is the max win in Core Breach and how likely is it?
The top payout is 50,000× the base bet. On a base spin it lands 1 in 3,333,332 spins. In the Containment buy (100×) 50,000× lands 1 in 98,039 buys.
Does Core Breach have a bonus buy, and what does it cost?
Yes, 4 buy modes. Containment: 100× the base bet, 95.00% RTP, an expected cost of 5.00× the base bet per buy. Reactor Roulette: 180× the base bet, 95.00% RTP, an expected cost of 9.00× the base bet per buy. Chain Reaction: 200× the base bet, 95.00% RTP, an expected cost of 10.00× the base bet per buy. Mystery Meltdown: 200× the base bet, 95.00% RTP, an expected cost of 10.00× the base bet per buy.
Is Core Breach high or low volatility?
High. Its base-mode standard deviation is 47.5× 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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