Pick up to 10 numbers from 40. We draw 10. The more you hit, the bigger the multiplier. Four risk levels reshape the paytable — Classic for steady grinding, High for moonshot 1,000× hits. Provably fair HMAC-SHA256 draws, USDT-BSC payouts, real autoplay with stop-on-profit and stop-on-loss.
Stake-style Keno on a 40-number board. We draw 10 — the more you match, the bigger the payout.
Classic, Low, Medium, High. Each risk level reshapes the paytable. Same house edge, different variance curve.
Bet count, stop-on-profit, stop-on-loss, live P&L strip. Set it and let Keno grind.
Keno predates casinos. The game is older than blackjack, older than poker, older than the wheel. In the on-chain era it has a quiet renaissance because the math is simple: hypergeometric distribution, no continuous-time tricks, easy to verify, easy to autoplay. Pick numbers. Wait for the draw. Match. Either you hit or you don't. There's nothing for a casino to hide.
Each (risk level, pick count) combination has its own paytable. We calibrated every row to raw EV ≈ 0.98 before scaling by (1 – edge_keno), so the final house take across all 40 combos lands in the 18-25% range at the default 20% edge setting. The Classic top payout is 1,000×. Medium peaks at 9,402× (picks 9, all hit — vanishingly rare). High focuses everything on the extreme tails. Full paytable visible in-game before you bet.
Each Keno draw consumes 10 unique random numbers between 1 and 40. We derive them from an HMAC-SHA256 stream keyed on the server seed, with your client seed and a rotating nonce as additional inputs. The server seed hash is published before your bet (commit). After the round, the seed is revealed and anyone can re-derive the exact 10 numbers we drew. Verifier tools at /fairness.
The Keno API accepts a risk level, an array of picks, and a stake. The response returns the draw, hit count, multiplier, and gross payout. Bots can run thousands of rounds an hour at 600 req/min (agent rate limit). REST docs; LLM skill spec.
Keno not your speed? Try Plinko (12-row physics drop) or Crash (rocket cashout) for higher decision density. For pure 50/50: Coin Flip. For grid risk: Mines. For the macro bet: live sportsbook on Champions League, NBA, IPL, ATP.
3 free spins · no deposit needed · provably fair
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