Sudoku Drift

A Sudoku that feels like a sanctuary, not a waiting room.

No accounts. No sign-up. No timers pushing you. Open it and play.

SIX LEVELS, GRADED HONESTLY Easy, Medium, Hard, Expert, Master and Extreme. Difficulty comes from the technique a board actually requires — not from how many numbers it hides. A puzzle labeled Hard needs a pointing pair; Master needs an X-Wing. You always know what you are walking into.

Extreme is the exception, and we would rather say so: it goes past the techniques our hint engine knows. It is there for players who bring their own.

TWO WAYS TO PLAY Classic keeps score: your time, your mistakes, your best runs. Zen measures nothing. No clock, no mistake counter, no way to lose. Some days that is the point.

A DAILY PUZZLE, THE SAME FOR EVERYONE One board a day, and a streak that grows while you keep showing up. No leaderboard, no ranking — just a quiet count of how many people finished it too.

HINTS THAT TEACH A hint tells you the technique, not just the number: which cell, which rule, why it works. You come out knowing something you did not know before.

EVERYTHING ELSE

• Pencil marks, with automatic candidates when you want them
• Highlighting for rows, columns, boxes and duplicates — all optional
• Statistics: win rate, best and average times, streaks, scores
• Three themes, including a warm cream for night
• Built for phones and tablets

WORKS WITHOUT INTERNET Every puzzle ships inside the app. On a plane, on the subway, in a basement — it plays exactly the same.

YOUR PROGRESS IS YOURS It lives on your phone and nowhere else. We never ask who you are.

ABOUT THE ADS There are ads, and there are rules we hold ourselves to. Never beside the number pad, where an accidental tap costs you a move. Never on top of the screen that celebrates a finished board. Never during a game.