About Video Poker Add-on
How to play Video Poker
The rules of Video Poker (Jacks or better) game are simple: the machine gives you five cards, you choose which to hold and which to discard, the machine replaces your discards and pays you off according to the value of your hand.
Video Poker Features
5 paylines with different payouts are supported, user can choose a payline before each round.
User can choose how much to bet.
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 randomly shuffled card deck. The server seed is a cryptographically secure random alpha-numeric string. The hash of these 2 strings helps to ensure that the initial card deck is not altered after you choose the bet amount. 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 divided by 52 (number of cards in the deck) and N cards will be cut (moved from the top to the bottom of the deck), where N is the remainder of the division. Because the client seed can not be predicted by the server the number of cards cut from the initial deck 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.
A casino administrator can:
- Cutomize paytable (set payout for each poker combination and payline)
- Set min and max bet amount
- Set bet increment / decrement amount
- Set default payline
- Set default bet amount
Please sign up at Crypto Casino to test the application.
You can use the following credentials to check the backend features:
user: firstname.lastname@example.org, password: admin
- Crypto Casino 1.13.0 or higher.
v1.3.0 - 12 January 2020 - Ability to manually input the bet amount. v1.2.2 - 16 October 2019 - New color schemes support. - New preloader image. v1.2.0 - 23 September 2019 - Game page re-design. v1.1.1 - 13 June 2019 - Disable access to the game page if 2FA is enabled and not yet passed. v1.1.0 - 31 May 2019 - Ability to specify by how much the bet size should be incremented / decremented when +/- buttons are clicked. v1.0.4 - 20 Apr 2019 - Bug fix: HTML content is displayed inside the <title> on games pages. v1.0.3 - 15 Apr 2019 - Bug fix: the game doesn't work in Firefox. v1.0.2 - 06 Apr 2019 - Minor bug fixes. v1.0.1 - 03 Apr 2019 - Minor bug fixes. v1.0.0 - 24 Mar 2019 - Initial release.