Sudoku: Ultimate Duel

Think you know Sudoku? Think again. Sudoku: Ultimate Duel is a sleek, neon-styled logic game that blends the number puzzle you love with real depth, competitive rankings and dozens of challenges. Solve puzzles solo offline, race against the clock, or take on a friend and players from around the world online!

🎮 4 BOARD SIZES
• 4×4 — perfect to start, fast and simple
• 6×6 — a quick game with a little challenge
• 9×9 — the classic Sudoku you know and love
• 16×16 — the ultimate challenge for true masters
• 5 difficulty levels: from Very Easy to Expert

🌍 PLAY YOUR WAY
• Solo offline mode — play at your own pace, no internet needed
• Vs computer — test yourself across difficulty levels
• Online with a friend — just share a room code
• Quick Match — instant pairing with a similar-skill player

🧩 EVERY TOOL IN ONE PLACE
• Timer with pause — full control over your time
• Hints — never get stuck for good
• Notes mode — jot down candidate numbers in each cell
• Endless auto-generated puzzles

🏆 RANKING & COMPETITION
• ELO rating system — online and offline
• Global leaderboard of top players
• Best-times leaderboard — beat records for every board and level
• Climb to the top and defend your spot

🎖️ 89 BADGES TO UNLOCK
• From bronze and silver to gold and platinum
• Challenges for win streaks, times, board sizes and much more
• Track your progress in a detailed player profile

✨ WHY YOU'LL LOVE IT
• Elegant gold-and-navy design with neon accents
• Satisfying sound effects and background music
• Detailed stats: win rate, streaks, game history
• Available in 6 languages
• Easy to learn, hard to put down

Classic 9×9 Sudoku, mini 4×4 and extreme 16×16 in one free game. Download now and see if you have what it takes to become a master. Your game. Your time. Your ranking.

Recent changes:
New offline helpers: tap a number to highlight all its cells, and try the new Smart Hint that fills candidate notes and spotlights easy moves. Plus small fixes.