Solo & focused
Three difficulty levels on a clean, distraction-free board. No account needed — and it even works offline.
Unlock your logic flow state
Multiplayer Sudoku, reimagined
Play free online Sudoku solo to sharpen your mind, or challenge friends in real-time multiplayer rooms. Climb the global leaderboard and track every solve.
Everything you need for the perfect solve
Real-time multiplayer
Play Sudoku with friends: create a room, share the link and solve the same puzzle head-to-head. Every move syncs live.
Global leaderboard
Compete for the fastest times and watch your rank rise as you sharpen your logic.
Track your progress
Your solves, streaks and best times, saved to your profile across every device.
Killer & Sudoku X
Beyond classic: cages with sums instead of given digits, or two diagonals that must hold 1–9 as well.
Hints that teach
A hint shows the next logical step and explains why it works — so you get better with every puzzle.
Daily challenge
The same puzzle for everyone each day. Compare times, keep your streak alive and unlock achievements.
Challenge a friend
Send a link to the puzzle you just solved. Your friend plays it — no account needed — and tries to beat your time.
Ready to find your flow?
Free online multiplayer Sudoku. No download. Just you, the grid, and a clear mind.
Play free