# MasterCode: Code Breaker > Logic puzzle & brain game: crack the secret color code in 10 attempts. Canonical page: [https://chrome-stats.com/d/com.tekinsight.mastercode](https://chrome-stats.com/d/com.tekinsight.mastercode) ## Overview - **ID:** `com.tekinsight.mastercode` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** Tekinsight - **Category:** GAME\_PUZZLE - **Downloads:** 10 - **Version:** 1.0.0 - **Last updated:** 2026-10-15 - **First published:** 2026-10-15 - **Publisher country:** PT - **Size:** 33 MB - **Data as of:** 2026-11-07 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.tekinsight.mastercode) - **Website:** [https://sagax-games.com/](https://sagax-games.com/) - **Privacy policy:** [https://mastercode.sagax-games.com/privacy.html](https://mastercode.sagax-games.com/privacy.html) ## Description MasterCode is a code breaker logic puzzle: crack the secret color code in 10 attempts, using only the clues from each guess.

HOW TO PLAY
A secret code of colored pegs is hidden at the top of the board. Make a guess, and small key pegs tell you how many of your pegs are the right color in the right place, and how many are the right color in the wrong place — but not which ones. Use every clue to narrow down the code and crack it within 10 attempts. After the first guess, every move can be reasoned out from the clues: a brain game of pure deduction.

MasterCode descends from Bulls & Cows (also known as Cows and Bulls), the pencil-and-paper code-breaking game, and turns it into a color peg board game with a clean, modern design.

THREE LEVELS, EASY TO HARD
• Easy — 4 pegs, 6 colors, each color used only once
• Medium — 4 pegs, 6 colors, colors can repeat
• Hard — 5 pegs, 8 colors, colors can repeat
A different secret code every game, so no two games are alike.

FEATURES
• 10 attempts to crack each code
• Clear clues: a cyan peg for right color, right place; a white ring for right color, wrong place
• Color-blind friendly: peg styles with symbols or numbers, so pegs are easy to tell apart
• Already tried a code? The game tells you, without using an attempt
• Timer with pause — or hide it
• Scoreboard per level: your 10 games with the fewest attempts (ties go to the faster time), plus your win record
• Relaxing music, sound effects and vibration (each can be turned off)
• Clean, distraction-free interface for phones and tablets
• Play offline, anywhere — no internet connection needed
• In English, Portuguese, Spanish, French and German

THE SCIENCE BEHIND IT
Code breaking is pure logical reasoning. Psychologists have used this kind of code-breaking puzzle for decades to study how people reason, and each guess works like a small experiment — form a hypothesis, test it, read the result. Long-term studies associate board games and puzzles with healthier cognitive aging. The app's Info screen summarizes the science, with full scientific references.

MasterCode is for anyone who enjoys logic puzzles, brain teasers and code-breaking games; a game takes a few minutes, at your own pace.

A Sagax Games title. Developed by Tekinsight — Information Technologies. ## Rankings - #2,848,422 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.INTERNET` - `android.permission.WAKE_LOCK` - `com.android.vending.CHECK_LICENSE` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` - `com.google.android.gms.permission.AD_ID` - `com.tekinsight.mastercode.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` ## Similar extensions and apps - [Mastermind: Crack the Code](https://chrome-stats.com/d/cz.colegio.mastermind) — 1,296 users - [Master Coder: Logic Challenge](https://chrome-stats.com/d/com.mastercoder.kevsite) — 9 users - [Peglock Code Break](https://chrome-stats.com/d/com.peglock.codebreak) — 1 users - [Codebreaker](https://chrome-stats.com/d/com.codebreaker.app) — 113 users - [Codebreaker: Mastermind Puzzle](https://chrome-stats.com/d/com.creationsaam.codebreaker) — 122 users - [Codebreakers: Color Code Game](https://chrome-stats.com/d/ca.sparkandspiral.mastermind_codebreaker) — 458 users - [Code Breaker : Logic Puzzle](https://chrome-stats.com/d/com.app.mastermind) — 4,674 users, 2.67 / 5 - [Modern Code Breaker](https://chrome-stats.com/d/com.rocketpuncher.moderncodebreaker) — 5,617 users - [Guess The Code](https://chrome-stats.com/d/com.bitwise.guessthecode) — 2,820 users - [Code Breaker](https://chrome-stats.com/d/com.octeyapps.codebreaker) — 211 users - [Mastermind - Codebreak](https://chrome-stats.com/d/com.dordetto.mastermind) — 114 users - [Codebreaker logic puzzle game](https://chrome-stats.com/d/ditiem.codebreaker) — 141 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.tekinsight.mastercode)