NumLock is a logic puzzle game inspired by classic deduction games like Mastermind. Every day, you get a new challenge to crack secret codes using logical reasoning.

How it works: Use the clues to deduce the secret number code. Each clue tells you how many digits you got right and whether they're in the correct positions.

Perfect for: Puzzle enthusiasts, logic game lovers, and anyone seeking daily mental exercise. Whether you're a Mastermind veteran or new to deduction games, our progressive difficulty system welcomes players of all skill levels.

Why play NumLock? Sharpen your logical thinking with just 5-15 minutes of daily brain training. Track your improvement over time, compete with your personal best, and build problem-solving streaks.

Key features: Cross-device progress sync, persistent timers that remember your progress even when you close the browser, customizable visual modes (numbers or colorful shapes), and detailed performance analytics to track your growth as a code-breaker.

Created by: Letterfall
Contact: gameletterfall@gmail.com
Version: 1.0

We're constantly improving the game based on your feedback. Have suggestions? Found a bug? Just want to say hi? Drop us a line!

Got It!

Maybe Later

⚠️ Warning: This Cannot Be Undone!

This will permanently delete:

• Your Google account connection to this game
• All your game statistics and progress
• Your streak history and achievements
• All data stored in the cloud

You will lose all progress forever.

Cancel Delete Forever