What is this game?

Keno is a lottery-like gambling game where 10 numbers are drawn from a pool of 40. The object of the game is for the player to guess what some (or all) of those numbers will be. You indicate your choices before the draw begins and after the draw, you receive winnings according to how many numbers you guessed correctly.

How to play?

The following is a brief explanation of how to play Keno on CryptoGames:

1. Prior to submitting your keno card, enter the amount you would like to wager in the 'Bet size' box.
2. Pick out the numbers you think will win by clicking up to 10 squares, then hit start.
3. Any winning squares you picked will be revealed as CryptoGames chips. Crosses will reveal the location of the remaining winning squares.

We only accept bets that have a profit smaller than 550 SOL (maximum win per bet).

Hotkeys:

• D - Start
• M - Mute/Unmute
• N - Slow/Fast
• A - Add
• S - Sub
• E - Double
• W - 1/2 bet
• Q - Min bet
• R - Max bet
• X - Random
• ESCAPE - Close
• C - Clear

I understand the risks, I want to manually change my client seed

Provably Fair gambling is a technology that is unique to Bitcoin gambling that makes it impossible for a player or casino to cheat.
You no longer have to doubt the house for your every loss. So, whatever game you are playing, you can be confident that the result is fair and accurate given its fairness is provable.

Seeds are generated strings that are used for cryptographic purpose.

Last server seed SHA256: Last seed generated on our side (encrypted SHA256)
Last server seed: Last server seed generated by our side
Last client seed:Last client seed generated on your side
Next server seed SHA256: Next server seed (encrypted SHA256)
Next client seed: Your next client seed
SHA512 hash: Server seed and client seed combined and encrypted in SHA512

To verify that your last bet was processed in a truly fair manner, you can go to an online SHA512 generator, merge your Server seed (A) and Client seed (B) by using a step indicator (#), something you might need later on, and calculate the hash of this string (A#B, where A and B are your seeds and # is an increasing number starting at 0). You'll receive the SHA512 hashes used for generating the sfield.

Now convert the first two characters of your bethash from Hexadecimal to Decimal. Use the result to calculate modulo 41 (the remainder of a division by 40, for example 55%41=15) and you will get the number for the first winning field. 0 is not a valid field, since the fields are numbered from 1 to 40. So if the result is 0, this pair is skipped.

Repeat the last step until you have found as many different coordinates as there are keno in your game. In the case of hash exhaustion (meaning you progress all characters in your bethash without finding enough mines for your game), start from the beginning, and increase your step indicator by one.

A video about the provably fair system we use Youtube.