User to user games

Roulette - a new format of the popular roulette game with multiple online players! Players deposit their points and create the total bank (bet). After 60 seconds round, the roulette wheel selects one winner of all players. The winning place is determined by our fair play system. Read more in the “Fair Game” tab.

Duel - the game where two players make bets equivalent to the sum of the cell they select (10, 50, 100, 500). The winning place brings the prize which is equal to the sum of two bids. The winning place is determined by our fair play system. Read more in the “Fair Game” tab.

Сells - the multiplayer game in which 10 players select their places out of 10 available cells in the game. As soon as all 10 cells are occupied, the game starts. Only one of 10 players wins the prize comprising the bids made by all players, and thus gets all the bank of the game. The winning place is determined by our fair play system. Read more in the “Fair Game” tab.

Cash roulette

The ninja is throwing his shuriken at the target. There are 3 colors at the target. The player selects and takes the color he believes the shuriken will hit. You can select 1, 2 or 3 colors and make a bet on each of them. If you choose the right color the amount of your bet will be increased (twice for white and black, 14 times for red). After the shuriken is thrown the system automatically determines the winning color. Read more in the “Fair Game” tab.

Pyramid game

Amazing game, fun and easy to play. There are 10 rows, each of them has winning and losing cells in it. Your aim is to guess which cell is winning to move to the next row and reach the top. The prizes are predefined when you press start, and your luck is the only thing that matters. This means that BTC-ninja is 100% verifiably fair. Go ahead and try it out. You can also read more in the “Fair Game” tab.

How to participate in the games?

a. Authorize on the website (Sign Up for a first entry)

b. Sign in on the website (for existing users)

c. Add points to your balance on the website.

d. Play and win!

What is the minimum amount of Bitcoins I need to start playing?

You can start playing with any amount but please be aware that you can deposit bitcoins only.

What's the commission of the service?

User to user Roulette, Duel, Cells and Pyramid game charge the 10% commission of the joint points bank. The Cash Roulette game does not charge any commission.

How to claim the WIN?

After the game ends, you instantly and automatically claim the win (by earning points). You are able to exchange your points for bitcoins right away.

What is the minimum amount of Bitcoins I can withdraw?

You can withdraw your win to your Bitcoin wallet only. The minimum withdraw amount is 0.001BTC.

How to withdraw points from the website?

Request bitcoin withdrawal on the website. Enter your profile and select the withdrawal option. Enter the amount you wish to withdraw and your BTC wallet address, make quick and safe withdrawal.

You didn't get your winning points to your balance?

Please contact our support team and they will help you resolve this issue. To contact support use support@btc-ninja.com

Points price change

1 BTC equals to 100 000 points. BTC-ninja.com reservs the right to change the price of the point (in case of significant change in the cost of bitcoin or other coins). If such even appears, the recalculation of all previous deposits and games wins will be made automatically.

Why Bitcoin?

Bitcoin is the most fast growing cryptocurrency in the world. It is secure, convenient and easily converted into any currency. You can easily withdraw your bitcoins to any banking card and turn them to the real cash. Any currency, in any country of the world!

How to win Bitcoins?

Play multiplayer BTC games online -> win points -> retrieve your winning points through the bitcoin system!

Where I can create the Bitcoin wallet?

Use one of the respective services: Coinbase, Xapo, MultiBit, Blockchain, or Armory. All of them have friendly interfaces and high ratings. You can also use the original bitcoin wallet https://bitcoin.org/en/choose-your-wallet. It is easy and will take just a couple of minutes

How to create the Bitcoin wallet using Coinbase:

a. Authorize on the website (Sign Up for a first entry)

b. Sign in on the website (for existing users)

c. Add bitcoins to your balance on the website. You can do it using bitcoins only!

d. Play and win!

Rules of the "duel" game

Participants play tet-a-tet: they place bids 1 against another 1, and have equal chances to win. When both gamers select their places, the system determines 1 winner who gets all the bank. The winning place is determined by our fair play system. Read more in the “Fair Game” tab.

Rules of the "roulette" game

The players deposit certain amount of points into the game. After each spin there is only one winner who gets all the points. The spin lasts 60 seconds. The more points you deposit, the higher winning chances you have. But there is the real chance to win even with the smallest bet! The winner is determined by our fair play system. Read more in the “Fair Game” tab.

Rules of the "cash roulette" game

The ninja is throwing his shuriken at the target. There are 3 colors at the target. The player selects and takes the color he believes the shuriken will hit. You can select 1, 2 or 3 colors and make a bet on each of them. If you choose the right color the amount of your bet will be increased (twice for white and black, 14 times for red). After the shuriken is thrown the system automatically determines the winning color. Read more in the “Fair Game” tab.

Rules of the "pyramid" game

1. Choose game level (EASY, MEDIUM, HARD).
EASY mode has 3 cells in a row: 2 winning, 1 losing.
MEDIUM mode has 2 cells in a row: 1 winning, 1 losing.
HARD mode has 3 cells in a row: 1 winning, 2 losing.

2. Select bet size or enter custom amount.
Click “+” to increase or “-“ to decrease the bet size (10 points set by default) or enter the amount manually. If you choose to click “MAX” you bet all points you have in your account (make sure you don’t click that option accidentally). If you click “MIN” you set a minimum possible bet (10 points).

3. Choose a cell in the first row and try to hit a winning cell.
If the words “You win” splash in the cell, you see a shuriken in that cell and second row starts to blink – it means you guessed it right in first row! Well done!
If you see the “crossed swords” in the cell, it means you lost the bet. Try again!

4. You can continue guessing upper rows with same logic to win much more or click “TAKE” and take your winnings.

Enjoy!

Rules of the "cells" game

The player selects and takes up 1 or more cells of 10 available free cells in the game. As soon as all 10 places are taken, the system automatically chooses one winner who hits the jackpot and gets the joint bank of the game. The winning place is determined by our fair play system. Read more in the “Fair Game” tab.

Fair game of the "duel" game

As each round begins the service will generate a Round Number 1 or 2 (for example, 1) + Round Key. Round Key is a random set of symbols (for example: iGwpMtsYs). These symbols are used to prevent the round's number decryption.

The Round Number and Round Key are encrypted by the service through algorithm sha224 and are shown as each round begins.

If the resulting number is 1, Player 1 wins;

If the resulting number is 2, Player 2 wins.

You can check that the result of the game wasn’t prearranged. For this, use any of the online services, for example, http://www.miniwebtool.com/sha224-hash-generator/. In the end of the round take the Round Number+Round Key, enter these two values to the text field and press “Generate hash” button. You will see the same hash value as the one specified in the beginning of the round. This will prove the accuracy of determining the winning point.

Fair game of the "roulette" game

As each round begins the service will generate a Round Number from 0 to 1 000 000 (for example, 174141) + Round Key. Round Key is a random set of symbols (for example: iGwpMtsYs). These symbols are used to prevent the round's number decryption.

The Round Number and Round Key are encrypted by the service through algorithm sha224 and are shown as each round begins.

In the end of the round previously encrypted number is multiplied by the total bank of the round points, thus getting the position of the winning point.

Please see the example: In the end the total round bank is 83657 points, and the Round Number was 21492. So the service multiplies this number by 83657 points, divides by maximum(1 000 000) and gets the number 1797.9, that’s will be the winning point. The winner of the round will be the player, who deposited this point.

The fair play stands at the principle that we cannot know what exactly the points bank will be in the end of the round, and the Round Number for multiplication is given right in the beginning of the game. That's why you can be sure that we have no ability to influence the game results .

You can check that the result of the game wasn’t prearranged. For this, use any of the online services, for example, http://www.miniwebtool.com/sha224-hash-generator/. In the end of the round take the Round Number+Round Key, enter these two values to the text field and press “Generate hash” button. You will see the same hash value as the one specified in the beginning of the round. This will prove the accuracy of determining the winning point.

Fair game of the "cells" game

As each round begins the service will generate a Round Number from 1 to 10 (for example, 1) + Round Key. Round Key is a random set of symbols (for example: iGwpMtsYs). These symbols are used to prevent the round's number decryption.

The Round Number and Round Key are encrypted by the service through algorithm sha224 and are shown as each round begins.

You can check that the result of the game wasn’t prearranged. For this, use any of the online services, for example, http://www.miniwebtool.com/sha224-hash-generator/. In the end of the round take the Round Number+Round Key, enter these two values to the text field and press “Generate hash” button. You will see the same hash value as the one specified in the beginning of the round. This will prove the accuracy of determining the winning point.

Fair game of the "pyramid" game

How to calculate positions of all Winning/Losing cells after hash

“EASY” LEVEL

Sum up figures from “Server Seed” and “Client Seed” fields. (Keeping the order of numbers strictly, i.e. first number from one figure add to first number from another figure etc).

Transform the result due to following scheme: 0 = 0, 1 = 1, 2 = 2, 3 = 0, 4 = 1.

EXAMPLE: 4132131020 to be transformed to 1102101020.

3. Result must coincide with “Round Number” field from Website.

4. Next check positions of LOSING cells (all other cells would be WINNING cells respectively). Position of a number in the 10-digit figure also indicates number of a row of the game to which it relates (starting from below). It means first number relates to first row, second number relates to second row etc.

Numbers from 0 to 2 indicate positions of LOSING cells due to following order:

0 – first cell (left)

1 – second cell (middle)

2 – third cell (right)

“MEDIUM” LEVEL

Sum up figures from “Server Seed” and “Client Seed” fields. (Keeping the order of numbers strictly, i.e. first number from one figure add to first number from another figure etc).

Transform the result due to following scheme: 0 = 0 1 = 1 2 = 0

EXAMPLE: 1100112200 to be transformed to 1100110000.

3. Result must coincide with “Round Number” field from Website.

4. Next check positions of WINNING cell (other cell would be losing cell respectively). Position of a number in the 10-digit figure also indicates number of a row of the game to which it relates (starting from below). It means first number relates to first row, second number relates to second row etc.

Numbers 0 and 1 indicate position of WINNING cells due to following order: 0 – first cell (left) 1 – second cell (right).

“HARD” LEVEL

Sum up figures from “Server Seed” and “Client Seed” fields. (Keeping the order of numbers strictly, i.e. first number from one figure add to first number from another figure).

Transform the result due to following scheme: 0 = 0 1 = 1 2 = 2 3 = 0 4 = 1

EXAMPLE: 4311221000 to be transformed to 1011221000.

3. Result must coincide with “RESULT” field from Website.

4. Next check positions of LOSING cells (all other cells would be WINNING cells respectively). Position of a number in the 10-digit figure also indicates number of a row of the game to which it relates (starting from below). It means first number relates to first row, second number relates to second row etc.

Numbers from 0 to 2 indicate position of WINNING cells due to following order: 0 – first cell (left), 1 – second cell (middle), 2 – third cell (right).


How to check LAST PLAYED ticket

You can check that the result of the game wasn’t prearranged. For this, use any of the online services, for example, http://www.miniwebtool.com/sha224-hash-generator/. In the end of the round take the Round's Number + Round Key(for example 012012012+kahsdovbkfn), enter these two values to the text field and press “Generate hash” button.

You will see the same hash value as the one specified in the beginning of the round. This will prove the accuracy of determining the winning point.

Fair game of the "cash roulette" game

As each round begins the service will generate a Round Number from 1 to 15 (for example, 7) + Round Key. Round Key is a random set of symbols (for example: iGwpMtsYs). These symbols are used to prevent the round's number decryption.

The Round Number and Round Key are encrypted by the service through algorithm sha224 and are shown as each round begins.

You can check that the result of the game wasn’t prearranged. For this, use any of the online services, for example, http://www.miniwebtool.com/sha224-hash-generator/. In the end of the round take the Round Number+Round Key, enter these two values to the text field and press “Generate hash” button. You will see the same hash value as the one specified in the beginning of the round. This will prove the accuracy of determining the winning point.