Sudoku

Sudoku · Zen All modes, all difficulties—one Sudoku game, mastered. ⸻ Three Modes to Match Every Challenge 🎯 Classic Mode The purest Sudoku experience. Easy allows 3 mistakes, Medium 2, Hard just 1. Limited forgiveness—every move counts. Fill the entire 9×9 grid to win. ⏱ Timed Challenge Built for speed lovers. Easy: 10 min, Medium: 15 min, Hard: 20 min. Race against the clock—be fast and accurate. Time up or mistakes exhausted = failure. Watch a rewarded ad to gain +30 seconds for a last-minute comeback. ⚡ Extreme Mode The ultimate test. Zero tolerance—one wrong cell ends the game instantly. No hints, no free undo, no safety net. Just you, the grid, and your skill. ⸻ Three Difficulty Levels for Everyone • Easy: 36 blanks, beginner-friendly, great for relaxing • Medium: 46 blanks, balanced challenge requiring focus and logic • Hard: 54 blanks, for experts—a true mental marathon Each mode × difficulty tracks its own best time. Push your limits and beat your records. ⸻ Carefully Crafted Controls ✏️ Pencil Notes Not sure? Use notes to track candidates. Unlock advanced features via rewarded ads: • Auto-fill candidates • Smart note cleanup 🖐 Drag Input Long-press a number and drag to fill quickly—smooth and efficient. 🔒 Number Lock Hold a number to lock it, then tap cells to fill rapidly. ↩️ Undo Protection Classic & Timed modes include free undo (Easy 3, Medium 2, Hard 1). More via ads. 💡 Hint System 1 free hint per game. Need more? Exchange ads for extra hints. ❤️ Second Chance Out of mistakes? Watch an ad to gain +1 life and continue. ⸻ Daily Check-In System Complete one daily puzzle (random mode & difficulty): 🔥 Streak tracking 📅 Monthly calendar 🏆 Milestone rewards (3, 7, 14, 30 days; total 10, 30, 50) Make Sudoku your daily brain ritual. ⸻ Achievement System Over 30 achievements across five categories: • Beginner • Classic Mode • Timed Challenge • Extreme Mode • Daily Check-In Unlock achievements to get satisfying on-screen rewards. ⸻ Clean & Elegant Design • Smooth fade + slide animations • Mode colors: Classic (blue), Timed (orange), Extreme (red) • Difficulty colors: blue / orange / red • Supports Simplified Chinese, Traditional Chinese, and English ⸻ Free to Play Completely free. Ads are optional and reward-based—no interruptions. ⸻ Start now—awaken your logic with a single Sudoku game.