Codebreaker Plus

5+
Downloads
Content rating
Everyone
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About this game

This game is popularly known as Mastermind or MOOCOW. Aim of game is to deduce a sequence using two clues. This app allows games up to 10 in length (default is 4), up to 10 shapes, and allowing duplicates or not. For a total of almost 100 game modes.

Game is mostly written in one single HTML file, the game is totally free and open-sourced, you can have the game app deposit a copy of core file for you and read source code at your leisure, if it is requested, I'll update and put app source code in a small in-app purchase. Audio in portable form is not copied and will not be available. While game is free and source code is freely available, I will release Android Kotlin wrapper source code as part of In-app Purchase if I have the time to do it.
Updated on
Dec 7, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
Learn more about how developers declare collection

What’s new

Changing the cursor in the game from just a red outline to entire red overlay over that cell.
Another change is to disable audio for those turned off or set audio volume to 0, which means it would not interfere audio in a two-app multitasking mode.