One Line

There is a way through. The challenge is finding it in one stroke.

One Line presents a network of connected points and lines. Your task is to trace the entire figure with one continuous movement, covering every line exactly once.

Place your finger on one of the marked starting points and begin drawing. From there, every turn matters. Follow the connections carefully, because a line you have already covered cannot be used again.

As you move, completed lines disappear, making it easy to see what remains.

PLAN BEFORE YOU DRAW

The obvious direction is not always the right one.

A branch that looks harmless can leave an isolated line with no way back. Sometimes the solution means saving a particular connection until the end; other times, the key is choosing the right route through the center of the figure.

Ringed stars indicate the positions where a valid attempt may begin. Once you choose your starting point, try to complete the whole shape without lifting your finger.

One uninterrupted stroke. Every line covered once. Nothing left behind.

A CLEAN LOGIC CHALLENGE

One Line focuses on visual reasoning rather than speed. There is no timer forcing the next move, so you can inspect the graph, consider possible routes and then test your solution.

The controls stay simple while the challenge comes from the shape itself.

• One-stroke line puzzles
• Trace each line exactly once
• Marked starting positions
• Visible progress as lines are cleared
• No timer
• Touch-and-drag controls
• Portrait play
• Works offline
• Free to play
• No account or registration

Each board starts as a tangle of connections and ends with a single solution drawn through all of them.

Find the route. Draw it once. Clear every line.

Recent changes:
2 (1.0.1)