Keno Reactor slot: RTP and max win
Keno Reactor is a low-volatility slot by Chatty Games on Stake Engine, released 7 Oct 2026. The top payout is 50,000× the bet; from a base spin it lands about once every 2,734,389 spins. It has 5 bonus buys priced at 50× to 100× the bet; the best returns 96.70%, so each buy costs 1.65× the bet on average over the long run. It is the No. 297 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 v1. "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 | |
|---|---|---|---|---|---|---|---|---|---|
| Chain Reaction | Base spin | 1.00× | 96.70% | 50,000× | 1 in 2,734,389 | 1 in 3.88 | 1 in 3.88 | 0.03× base | Simulate |
| Classic 1 | Base spin | 1.00× | 96.70% | 360× | 1 in 44,060 | 1 in 4.00 | 1 in 4.00 | 0.03× base | Simulate |
| Classic 10 | Base spin | 1.00× | 96.70% | 20,000× | 1 in 3,050,389 | 1 in 2.06 | 1 in 4.85 | 0.03× base | Simulate |
| Classic 2 | Base spin | 1.00× | 96.70% | 600× | 1 in 106,169 | 1 in 2.26 | 1 in 2.26 | 0.03× base | Simulate |
| Classic 3 | Base spin | 1.00× | 96.70% | 2,000× | 1 in 251,171 | 1 in 1.70 | 1 in 6.31 | 0.03× base | Simulate |
| Classic 4 | Base spin | 1.00× | 96.70% | 3,500× | 1 in 339,097 | 1 in 3.91 | 1 in 3.91 | 0.03× base | Simulate |
| Classic 5 | Base spin | 1.00× | 96.70% | 5,000× | 1 in 893,049 | 1 in 2.73 | 1 in 2.73 | 0.03× base | Simulate |
| Classic 6 | Base spin | 1.00× | 96.70% | 6,000× | 1 in 861,824 | 1 in 2.11 | 1 in 6.20 | 0.03× base | Simulate |
| Classic 7 | Base spin | 1.00× | 96.70% | 10,000× | 1 in 1,679,761 | 1 in 1.75 | 1 in 4.21 | 0.03× base | Simulate |
| Classic 8 | Base spin | 1.00× | 96.70% | 12,500× | 1 in 1,532,261 | 1 in 3.21 | 1 in 3.21 | 0.03× base | Simulate |
| Classic 9 | Base spin | 1.00× | 96.70% | 15,000× | 1 in 1,563,941 | 1 in 2.51 | 1 in 6.54 | 0.03× base | Simulate |
| Meltdown | Base spin | 1.00× | 96.70% | 50,000× | 1 in 3,548,069 | 1 in 4.70 | 1 in 4.70 | 0.03× base | Simulate |
| Overcharge | Base spin | 1.00× | 96.70% | 50,000× | 1 in 3,720,270 | 1 in 4.49 | 1 in 6.09 | 0.03× base | Simulate |
| Twin Core | Boosted spin | 2.00× | 96.70% | 50,000× | 1 in 3,669,244 | 1 in 1.72 | 1 in 3.54 | 0.07× base | Simulate |
| Quantum Core | Boosted spin | 10× | 96.70% | 50,000× | 1 in 504,529 | 1 in 3.12 | 1 in 8.32 | 0.33× base | Simulate |
| Ignition | Bonus buy | 50× | 96.70% | 50,000× | 1 in 123,835 | every round | 1 in 3.56 | 1.65× base | Simulate |
| Zen 1 | Bonus buy | 100× | 96.70% | 111× | 1 in 4.00 | – | 1 in 4.00 | 3.30× base | Simulate |
| Zen 2 | Bonus buy | 100× | 96.70% | 159× | 1 in 17 | – | 1 in 2.26 | 3.30× base | Simulate |
| Zen 3 | Bonus buy | 100× | 96.70% | 224× | 1 in 82 | – | 1 in 1.70 | 3.30× base | Simulate |
| Zen 4 | Bonus buy | 100× | 96.70% | 421× | 1 in 435 | – | 1 in 1.43 | 3.30× base | Simulate |
Work out the cost of Keno Reactor 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 | |
|---|---|---|
| v1 | 96.700% | Active |
Frequently asked
What is the RTP of Keno Reactor?
Base spins return 96.70% of the amount wagered over the long run, from the published outcome table for version 1. All 5 of its bonus buys return 96.70%.
What is the max win in Keno Reactor and how likely is it?
The top payout is 50,000× the base bet. On a base spin it lands 1 in 2,734,389 spins. In the Ignition buy (50×) 50,000× lands 1 in 123,835 buys.
Does Keno Reactor have a bonus buy, and what does it cost?
Yes, 5 buy modes. Ignition: 50× the base bet, 96.70% RTP, an expected cost of 1.65× the base bet per buy. Zen 1: 100× the base bet, 96.70% RTP, an expected cost of 3.30× the base bet per buy. Zen 2: 100× the base bet, 96.70% RTP, an expected cost of 3.30× the base bet per buy. Zen 3: 100× the base bet, 96.70% RTP, an expected cost of 3.30× the base bet per buy. Zen 4: 100× the base bet, 96.70% RTP, an expected cost of 3.30× the base bet per buy.
Is Keno Reactor high or low volatility?
Low. Its base-mode standard deviation is 11.2× 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.