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How to Play KENO Single
How to Play KENO Single
COCO. avatar
Written by COCO.
Updated over a week ago

Keno Single is an exciting and fast-paced game that allows players to select numbers, place wagers, and potentially win big. With its straightforward gameplay and customizable options, Keno Single offers a thrilling experience for players of all skill levels. In this comprehensive guide, we will explore the rules, auto mode operation, house edge, and the fairness verification process of Keno Single.

How to Play Keno Single

Keno Single is played by choosing up to 10 numbers from a set of numbers ranging from 1 to 40. Here's a step-by-step breakdown of the gameplay:

  1. Select Your Numbers: Start by selecting the numbers you wish to play with. You can choose up to 10 numbers from the available set.

  2. Determine Your Wager: Decide how many coins you want to wager on your chosen numbers. Remember that the potential payout increases with the number of combinations selected.

  3. Hit Successful Selections: The objective is to hit as many successful selections as possible. The more selections you hit, the higher your payout multiplier will be. Note that the maximum number of possible selections and successful hits is 10.

  4. Check Your Winning Numbers: Once the game is complete, you can check the winning numbers and see if they match the selections you made. If your chosen numbers match the winning numbers, you will receive the corresponding payout based on the number of successful hits.

To modify your selection or start a new game, simply press the "Clear Table" button.

Keno Single

Auto Mode Operation Instructions

Keno Single also offers an Auto Mode feature that allows you to automate certain aspects of the gameplay. Here's how the Auto Mode operates:

  • On Win: When you win, the next bet amount can either increase by a specified value or reset to the initial amount, depending on your preference.

  • On Loss: After a loss, you can set the next bet amount to either increase by a specific value or reset to the initial amount.

  • Stop on Win: Auto Mode will stop once the total amount won from the start of the betting session reaches or exceeds a predetermined value.

  • Stop on Loss: Auto Mode will stop if the total amount lost from the start of the betting session reaches or surpasses a specified value.

These customizable settings allow you to tailor your betting strategy and manage your gameplay according to your preferences.

Understanding the House Edge

In Keno Single, the house edge is 1%. This means that, on average, the house retains 1% of the wagers placed by players. The remaining 99% is distributed as potential winnings.

Fairness Verification Process

Keno Single ensures fairness through a transparent verification process. The results of each game are calculated using a chain of SHA256 hashes. Here's how the verification process works:

  1. Hash Chain Generation: A secret is used to generate a chain of 10,000,000 SHA256 hashes. Each hash in the chain is derived from the previous hash, forming a sequential chain of elements.

  2. Mapping Game Results: Each game in Keno Single is mapped to a specific hash in the chain. The 10,000,000th element of the chain corresponds to game #1, while the first element represents game #10,000,000.

  3. Verifying Game Results: To verify the result of a specific game, hash the corresponding hash n times and compare the result with the terminating hash. If they match, the hash belongs to game #n.

  4. Result Calculation: To calculate a game's result from its hash, a specific algorithm is used. The provided code snippet demonstrates the calculation process using the hash:

    const crypto = require("crypto");

    function seedGenerator(hash, salt) {
    const hmac = CryptoJS.HmacSHA256(CryptoJS.enc.Hex.parse(hash), salt);
    return hmac.toString(CryptoJS.enc.Hex);

    function createNums(allNums, hash) {
    const nums = [];
    let h = CryptoJS.SHA256(hash).toString(CryptoJS.enc.Hex);
    allNums.forEach((c) => {
    nums.push({ num: c, hash: h });
    h = h.substring(1) + h.charAt(0);
    nums.sort(function (o1, o2) {
    if (o1.hash < o2.hash) {
    return -1;
    } else if (o1.hash === o2.hash) {
    return 0;
    } else {
    return 1;
    return nums;

    function keno(hash) {
    const allNums = [
    1, 30, 11, 40, 2, 29, 12, 39, 3,
    28, 13, 38, 4, 27, 14, 37, 5, 26,
    15, 36, 6, 25, 16, 35, 7, 24, 17,
    34, 8, 23, 18, 33, 9, 22, 19, 32,
    10, 21, 20, 31

    let seed = hash;
    let finalNums = createNums(allNums, seed);

    seed = String(CryptoJS.SHA256(seed));
    finalNums = createNums(finalNums, seed);

    return finalNums.slice(0, 10).map((m) => m.num);

    let hash = "game hash";
    console.log("result =>", keno(hash).map((item) => item.num).join(","));

  5. By following this verification process, players can ensure the integrity and fairness of the game results.

    In conclusion, Keno Single offers a thrilling and fast-paced gaming experience. With the freedom to choose numbers, customize wagers, and automate gameplay through Auto Mode, players can enjoy the game with convenience and flexibility. The 1% house edge ensures fair gameplay, and the transparent verification process adds an extra layer of trust. So, select your lucky numbers, place your wagers, and let the excitement of Keno Single unfold as you aim for successful hits and exciting payouts!

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