🧠 Killer Sudoku - Daily Brain Challenge!

Welcome to Killer Sudoku – a fun and challenging twist on the classic Sudoku puzzle! Each puzzle combines traditional logic with math-based “cages” to test your brain like never before.

🎮 Features:

• ✅ 4 Difficulty Levels: Easy, Medium, Hard, Expert
• 🧩 Hand-crafted boards with logical cage groups, each with a unique solution
• ⏱️ Timer, game statistics & performance charts by day, week, and month
• ✏️ Notes, Undo, Hints, Mistake warnings, and more!
• 🌙 Light & Dark mode with multilingual support: English, Vietnamese, Japanese
• 📊 Beautiful charts to track your progress and daily play
• 🆓 Play for free, with fair ads and optional rewarded videos to continue after mistakes!

❤️ Why you'll love it?

Play Killer Sudoku daily to sharpen your logic, relax your mind, and enjoy a mindful brain workout.

👉 Download on Android | Download on iOS