Pay table
Pick 1 to 5 of the 20 board numbers; the chain draws 10. The more of your picks it finds, the higher the multiplier. Picking more numbers raises the ceiling but makes the top hit rarer — both are shown below.
| You pick | Top prize | Chance of top |
|---|
| 1 numbers | 1.9× | 50.00% |
| 2 numbers | 2.9× | 23.68% |
| 3 numbers | 5.2× | 10.53% |
| 4 numbers | 11× | 4.33% |
| 5 numbers | 19.9× | 1.63% |
How to win
- Choose 1–5 numbers, place your bet, and the chain draws 10 of the 20.
- Your payout depends on how many of your picks are among the drawn 10 — the paytable changes with how many you picked.
- Missing most of your picks loses the stake; that is Keno's rule, unlike Plinko.
RTP & house edge
Every paytable returns exactly 95% (a 5% house edge), generated from one merkle-committed source and proved on-chain at load — the number on the board is the number paid, to the digit. Every bet also has a chance at the shared system jackpot.
Why the RTP is exactly 95% — add it up yourself
The return rate is not a claim we make; it is a sum. Take how OFTEN each hit count happens, multiply by what that hit count PAYS, and add the results. The table below prints all three columns, so you can check it on a calculator — the last column has to total 95%. Chances come from the hypergeometric distribution of drawing 10 from a 20-number board; multipliers are read straight from the table compiled into the on-chain program.
When you pick 1| Hits | Chance | Pays | Adds to RTP |
|---|
| 0 of 1 | 50.00000% | 0× | 0.000% |
| 1 of 1 | 50.00000% | 1.9× | 95.000% |
| Total = RTP | 95.000% |
When you pick 2| Hits | Chance | Pays | Adds to RTP |
|---|
| 0 of 2 | 23.68421% | 0× | 0.000% |
| 1 of 2 | 52.63158% | 0.5× | 26.316% |
| 2 of 2 | 23.68421% | 2.9× | 68.684% |
| Total = RTP | 95.000% |
When you pick 3| Hits | Chance | Pays | Adds to RTP |
|---|
| 0 of 3 | 10.52632% | 0× | 0.000% |
| 1 of 3 | 39.47368% | 0× | 0.000% |
| 2 of 3 | 39.47368% | 1.02× | 40.263% |
| 3 of 3 | 10.52632% | 5.2× | 54.737% |
| Total = RTP | 95.000% |
When you pick 4| Hits | Chance | Pays | Adds to RTP |
|---|
| 0 of 4 | 4.334365% | 0× | 0.000% |
| 1 of 4 | 24.767802% | 0× | 0.000% |
| 2 of 4 | 41.795666% | 0.51× | 21.316% |
| 3 of 4 | 24.767802% | 1.05× | 26.006% |
| 4 of 4 | 4.334365% | 11× | 47.678% |
| Total = RTP | 95.000% |
When you pick 5| Hits | Chance | Pays | Adds to RTP |
|---|
| 0 of 5 | 1.625387% | 0× | 0.000% |
| 1 of 5 | 13.544892% | 0× | 0.000% |
| 2 of 5 | 34.829721% | 0× | 0.000% |
| 3 of 5 | 34.829721% | 1.06× | 36.920% |
| 4 of 5 | 13.544892% | 1.9× | 25.735% |
| 5 of 5 | 1.625387% | 19.9× | 32.345% |
| Total = RTP | 95.000% |
Every pick count lands on exactly 95% — picking more or fewer numbers does not move the house edge, only the shape of the risk: few picks hit often and pay shallow, more picks hit rarely and pay deep. The 5% house edge is already inside these multipliers; nothing further is deducted at payout.
Provably fair
The draw is not made by your browser. The chain produces verifiable randomness (Chainlink VRF on Arbitrum, Switchboard on Solana — committed before your bet and verified at reveal), and the ten numbers are drawn from it with ten shrinking-modulo divisions over a 20-cell deck. Take the published value, run the same ten divisions, and you get the same ten numbers. The five paytables are merkle-committed, live in the program, and return exactly 95% — a 5% house edge.
Frequently asked questions
- How does Keno work?
- Pick 1 to 5 of the 20 board numbers and place your bet. The chain draws 10; the more of your picks it finds, the higher the multiplier. The paytable changes with how many you pick and is shown on the board — few picks hit often, five picks open a 19.9× top prize.
- Can the draw be tampered with?
- No. The randomness comes from a verifiable random function — Chainlink VRF on Arbitrum, Switchboard on Solana — committed in advance and verified by the program at reveal. From the published value, the 10 numbers are drawn with exactly ten shrinking-modulo divisions (bases 20, 19, … 11) over a 20-cell deck — run those ten divisions yourself and you get the same ten numbers.
- Where do the multipliers come from?
- The five paytables (one per pick count) are generated from a single source, merkle-committed, and live in the on-chain program. Every table returns exactly 95% (a 5% house edge), and every entry sits on the 0.01× grid — the number on the label is the number paid, to the digit.
- Can I lose everything?
- Yes — that is Keno's rule, unlike Plinko. Missing most of your picks loses the stake (the 0× cells in the table). In exchange the top hits pay well: pick 5, hit 5, and the table pays 19.9×.
- What are the minimum and maximum bets?
- The minimum is 1 USDT. The ceiling is set by the bankroll from the Kelly fraction that travels with each table: the spiky 5-pick table is capped tighter than the flat 1-pick one, so every winning draw stays fully payable.