NineCells | Multiplayer Sudoku

Real-time Sudoku duels. Match with players worldwide, climb from Bronze to Master, and prove you have the fastest mind.

NineCells — Where Sudoku Gets Competitive

Think you're fast at Sudoku? Prove it. NineCells turns the classic puzzle into a real-time multiplayer game where every move counts.

ONLINE MULTIPLAYER Get matched with real players at your level through ELO-based matchmaking. Win matches to climb from Bronze to Master. No bots, no waiting — just real opponents and a live leaderboard.

6 GAME MODES • Classic — Pure 9×9 Sudoku, your way • Zen — No timer, no pressure, just flow • Blitz — Solve as many as you can before time runs out • Killer — Cage sums add a new layer of logic • Time Bomb — Correct = +4s, wrong = −10s • Speedrun — One puzzle, fastest time wins • Survival — 3 lives, endless puzzles

DAILY PUZZLE & STREAKS A new puzzle every day. Build your streak, freeze the days you miss, and compete on the daily and monthly leaderboards.

PLAY WITH FRIENDS Start a match over FaceTime with SharePlay — same puzzle, same clock, head-to-head. Or send a custom challenge to anyone.

ACHIEVEMENTS & STATS Earn 40+ Game Center achievements. Track times, difficulty splits, and full session history with rich charts.

WIDGETS, WATCH & LIVE ACTIVITIES Daily streak widget, weekly heatmap, full Apple Watch app, and Lock Screen / Dynamic Island Live Activities.

DESIGNED FOR FOCUS Clean interface, zero ads, zero clutter. iCloud sync, full Shortcuts support and Siri intents. Just you and the grid.

Download NineCells. The online sudoku you've been waiting for.