Sudoku Online: Multiplayer 1v1

Content rating
Everyone
10K+
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Content rating
Everyone
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About this game

Play Sudoku online against friends in real-time 1v1 duels, or train your brain with hundreds of classic Sudoku puzzles offline. Same grid, two players: the faster solver wins.

MULTIPLAYER SUDOKU — REAL-TIME 1V1
• Create a private game and share the code with a friend, or join a public game against a random opponent.
• Both players solve the same Sudoku at the same time; every correct number scores a point.
• Wrong numbers cost you a time penalty, so think before you tap.
• Watch your rival's progress live and race to fill the grid first.

CLASSIC SUDOKU — SINGLE PLAYER
• Hundreds of hand-picked puzzles in four difficulties: easy, medium, hard and expert.
• Progress and best times are saved on every puzzle, so you can pick up where you left off.
• Play offline, anywhere: on the train, in bed, on a break.

DESIGNED FOR FOCUS
• Pencil notes: long-press a cell to jot down up to three candidate numbers.
• Clean, distraction-free board with big, readable numbers.
• Relaxing music and sound effects you can mute with one tap.
• Available in English, Spanish, Catalan, German and French.

HOW TO PLAY
1. Pick Single player and a difficulty, or Online multiplayer to start a duel.
2. Tap a cell, then tap a number. Long-press to add notes.
3. Fill the grid — or fill more cells than your opponent — to win.

Whether you want a quick logic puzzle or a competitive number game with friends, Sudoku Online is the Sudoku app that makes solving social. Download it and challenge someone today.
Classic Sudoku puzzles offline + real-time 1v1 multiplayer battles with friends.
Updated on
Aug 29, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit

What’s new

• Play in English, Spanish, Catalan, German and French — pick your language in Settings.
• Fresh new look across the whole app.
• New Settings screen: change your username and turn music & sounds on or off.
• Online matches now start instantly.
• Confetti when you solve a puzzle!
• Faster, smoother app under the hood.
• Bug fixes and stability improvements.