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Connect 21 Binary Puzzle 1.0.0

11.7 MB / 1+ Downloads / Rating 4.9 - 7 reviews


See previous versions

Connect 21 Binary Puzzle, developed and published by CardzyGames, has released its latest version, 1.0.0, on 2023-01-25. This app falls under the Casual category on the Google Play Store and has achieved over 100 installs. It currently holds an overall rating of 4.9, based on 7 reviews.

Connect 21 Binary Puzzle APK available on this page is compatible with all Android devices that meet the required specifications (Android 2.2+). It can also be installed on PC and Mac using an Android emulator such as Bluestacks, LDPlayer, and others.

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Game Screenshot

Game Screenshot

Game Details

Package name: air.Connect21

Updated: 2 years ago

Developer Name: CardzyGames

Category: Casual

App Permissions: Show more

Installation Instructions

This article outlines two straightforward methods for installing Connect 21 Binary Puzzle on PC Windows and Mac.

Using BlueStacks

  1. Download the APK/XAPK file from this page.
  2. Install BlueStacks by visiting http://bluestacks.com.
  3. Open the APK/XAPK file by double-clicking it. This action will launch BlueStacks and begin the application's installation. If the APK file does not automatically open with BlueStacks, right-click on it and select 'Open with...', then navigate to BlueStacks. Alternatively, you can drag-and-drop the APK file onto the BlueStacks home screen.
  4. Wait a few seconds for the installation to complete. Once done, the installed app will appear on the BlueStacks home screen. Click its icon to start using the application.

Using LDPlayer

  1. Download and install LDPlayer from https://www.ldplayer.net.
  2. Drag the APK/XAPK file directly into LDPlayer.

If you have any questions, please don't hesitate to contact us.

Game Rating

4.9
Total 7 reviews

Previous Versions

Connect 21 Binary Puzzle 1.0.0
2023-01-25 / 11.7 MB / Android 2.2+

About this app

Connect 21 is a straightforward binary puzzle game, relaxing and easy to play on your spare time or whenever you feel bored.
Inspired by the beauty of numbers and math, Connect 21 was created to be an addicting brain teasing game, especially for math games lovers.


*** About Connect 21 game: ***

✔ Straightforward rules: connect as many numbers as possible to score 21 points.
✔ Not just a simple game. Connect 21 is also a game for children to improve their brain and math in fun and entertaining way and can also help casino dealers to train their card counting skill for Blackjack.
✔ Compare scores in leaderboards (by Google Games Play).
✔ Play in 2 modes: levels or sandbox (highscore)
✔ Designed to give hard time to lazy brains
✔ Simple and clean design
✔ Brain teasing game
✔ Easy and relaxing game
✔ Very useful app for kids, simple math adding becomes very easy after they play this game for a while
✔ Different grid sizes
✔ Fill up the green or blue bars in sandbox mode to clear all tiles of that color.


If you love binary or puzzle games this is a must play game for you. If you like Connect 21 please give a moment to rate it. In the future more levels could be created and even a multiplayer version. Until then, relax and enjoy a fun number game.

Please read and accept our privacy policy and also Google partners policy before installing: http://cardzygames.com/PrivacyApps.html and http://www.google.com/policies/privacy/partners/

App Permissions

Allows applications to open network sockets.
Allows applications to access information about networks.