Crypto Casino - keno

About Keno Add-on

Keno is an add-on game for the Crypto Casino application.
This game can not be installed and used on its own without having Crypto Casino purchased and installed first.

How to play Keno?

Select 10 numbers from 1 to 80 by clicking on a specfic number. If it is too boring click “Pick randomly” to let your computer do that for you. Choose your bet and click “Play”.

20 unique random numbers will be generated. The goal is to match as many numbers you chose on the board with the generated numbers as possible.

Keno Features

Game features

  • Ability to choose numbers to bet on manually or pick randomly
  • Ability to set bet amount
  • Ability to turn sound on / off
  • Full screen mode

Provably fair

When you open the game page the server generates a secret and a seed and reveals its hash (using HMAC SHA256 algorithm). The server secret represents a list of 20 unique random numbers from 1 to 80. The server seed is a cryptographically secure random alpha-numeric string. The hash of these 2 strings helps to ensure that the initial roll of random numbers is not altered after you make a bet. After the game is finished the server secret and the server seed are revealed, so you can easily calculate and verify the hash.

When you play a game you can pass an extra custom string – client seed (if it’s not specified a random number is automatically generated by your browser). The server will then calculate another hash using the server secret, the server seed and the client seed. The last 5 chars of this hash (representing a hexadecimal value) will be converted to an integer. The result number will be used to adjust each of the 20 numbers generated before the game. Because the client seed can not be predicted by the server the adjustment is completely random and hence you can be sure that the game result is fair.

To check that a game you played was fair go to History >> My games page, select a game and click Verify button.

Game settings

A casino administrator can:

  • Set min and max bet amount
  • Set default bet amount
  • Set bet increment / decrement amount
  • Set payout for each number of hits
  • Set how many numbers to draw (20 by default)

Demo environment

Please sign up at Crypto Casino to test the application.
You can use the following credentials to check the backend features:

user: [email protected], password: admin

System requirements


Keno Game Add-on for Crypto Casino - 1


v1.1.0 - 12 January 2020
- Ability to manually input the bet amount.

v1.0.2 - 16 October 2019
- New color schemes support.
- New preloader image.

v1.0.1 - 08 October 2019
- Minor interface fixes.

v1.0.0 - 16 August 2019
- Initial release.