Is Mastermind Arena free to play?

Yes! Mastermind Arena is completely free to play. No subscriptions, no ads, no hidden costs. Just pure puzzle gaming fun.

Can I play Mastermind with friends online?

Absolutely! You can play 2 player Mastermind matches, create private groups, and compete in multiplayer tournaments with your friends.

Do I need to download anything to play?

No download required! Play Mastermind directly in your web browser on any device - desktop, tablet, or mobile phone.

What is Mastermind game?

Mastermind is a classic code-breaking logic puzzle game where you try to guess a secret color combination. Use logic and deduction to crack the code in the fewest attempts possible.

✅ 100% FREE - Play Instantly, No Signup Required

Mastermind Online Free | Code Breaker Online Free

Classic mastermind online and code breaker online game • 2 player multiplayer • Daily challenges

🎮 Try It Now - Free Demo

Crack the 4-color code in 10 attempts or less!

Playing solo vs computer • Sign up free to play vs other players

Mastermind

EASY

5 colors, 4 positions

Attempts: 0/10•Time: 0s

Progress10 attempts left

red

blue

green

yellow

purple

orange

How to Play:

• The computer has chosen a secret code of 4 colors
• You have 6 different colors to choose from
• Colors can repeat in the code
• Select a color from the palette, then click a position to place it
• Right-click a position to clear it
• After submitting, you'll see feedback:
- 🟢 Green = Right color, right position
- 🟡 Yellow = Right color, wrong position
- ⚫ Gray = Color not in the code
• Crack the code in 10 attempts or less to win!
⌨️ Keyboard Shortcuts:
• Keys 1-6: Select colors
• ←/→: Navigate positions
• Space: Place selected color
• Backspace/Delete: Clear position
• Enter: Submit guess
• Escape: Deselect color

Want to save your scores and compete globally?

🎯 Sign Up Free 🔑 Sign In

🎮 Open Full Demo Page (with difficulty selection)

🏁

2 Player Mode

Race friends in real-time multiplayer (free signup required)

📅

Daily Challenges

Compete for daily prizes and streaks

🏆

Leaderboards

Climb global rankings and earn achievements

🏆 View Leaderboard 👑 Daily Champions Already have an account? Sign In

The Best Free Code Breaker Mastermind Game Online

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Play Mastermind online free and code breaker online free! Experience the classic Mastermind board game online and code breaker puzzle completely free. Our platform lets you play mastermind online and code breaker online anytime, anywhere. No download, no installation - just pure brain-teasing fun. Try it instantly above with no signup required.

👥 Mastermind Online 2 Player & Multiplayer Modes

Challenge your friends in exciting mastermind online 2 player matches or join multiplayer code breaker tournaments. Create private groups, chat with teammates, and compete in real-time mastermind online multiplayer races. Free signup unlocks multiplayer features and lets you save your scores.

🔥 Daily Challenges & Streaks

Test your logic skills with new daily Mastermind puzzles. Build winning streaks, earn achievements, and climb the global leaderboard. Every day brings a fresh challenge for puzzle game enthusiasts. Check out our daily champions hall of fame!

🏆 Why Play Mastermind Arena?

100% free - no ads, no subscriptions
Mobile-friendly - play on any device
Global leaderboards & rankings
Team competitions & social features
Regular updates & new game modes