One Stroke: Line Draw Puzzle

Every puzzle is a figure made of dots and lines. Your job is to draw over every line exactly once, in a single continuous stroke — one unbroken path from the first dot to the last.

Two rules, and that is the whole game:
- You may pass through the same dot as often as you like.
- You may never draw the same line twice.

Touch any dot to start, then drag from dot to dot. Lift your finger whenever you want — your stroke stays where it is, glowing at its end, and you carry on from there. Slide back the way you came to erase the last line, or use Undo and Restart. Both are free and unlimited, always.

WHY IT NEVER RUNS OUT
Boards are not stored, they are built — on your phone, from the level number alone, by walking from dot to dot without ever reusing a line. That walk is itself a solution, so every board you meet can genuinely be drawn in one stroke. There is no level pack to finish and nothing to download: level 1,000 is as real as level 10.

FOUR STEPS UP
Easy (levels 1-15) starts you on a small grid with seven lines. Medium (16-40), Hard (41-80) and Expert (81 and up) add more dots, more lines and more of the knight's-move jumps that make a figure much harder to read at a glance.

A PUZZLE EVERY DAY
The Daily Puzzle is a Hard board, and it is the same board for everyone playing that day. Solve it and your streak grows by one; miss a day and the count starts again. Your current streak, your best streak and how many puzzles you have solved at each difficulty all live on the Stats screen, and a finished daily can be shared with a tap.

WHEN YOU GET STUCK
Tap Hint and the game marks a line that still leads to a complete solution — not the whole answer, just the next step, and never a step that leads nowhere. You get three hints a day. If you want more on the same day you can watch a short video for three extra, but you never have to: Undo and Restart cost nothing and can be used as often as you like.

The game also explains itself as you play. The first time your stroke runs into a dead end, it shows you how to work out where a full stroke has to begin on that board. The first time you try to redraw a line, it explains why dots and lines follow different rules. Each tip appears once, at the moment it actually matters.

MADE TO BE PLAYED ANYWHERE
- Works fully offline. No account, no sign-up, no connection needed to play.
- Your level, streak and stats stay on your phone, and you can reset them yourself at any time.
- No ad ever interrupts a puzzle in progress. The board itself carries no ad slot; a small banner sits at the bottom of the home screen, the stats screen and the finished-puzzle panel. A full-screen ad after a puzzle only comes once you have finished one, never for your first three. An ad may also appear as the app opens.
- Rings on the starting dots, the haptic buzz and the sound can each be turned off in Settings.
- One calm dark theme throughout, easy on the eyes for a long sitting.

Questions or a puzzle that looked impossible? There is a contact button in About, and we read every message.