1LINE - one-stroke puzzle game v3.7.0

Gamincat

Contains ads • In-app purchases

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About this app

Developer Description

A brain-training puzzle in which you draw 1 line, that will sharpen your wits.

A brain-training puzzle in which you draw 1 line, that will sharpen your wits.
In this free-to-play puzzle game, you merely have to draw one line. It is deceptively simple, yet profoundly deep.
Play through the extensive stages, sharpening your wits as you have fun.

Summary
A brain-training puzzle game that activates your mind as you play.
When you've got a spare moment, on your daily commute, or before going to bed, why not experience what it feels like to activate you mind?

How to play
There is only one rule:
"Connect all the points with just one line."
It doesn't matter where you start.

There are some fiendishly tricky, complicated puzzles among the large number of stages.
When you get stuck, make use of a hint.

Stages
There are 10 levels, and a total of 500 stages.
At first, it starts off with simple shapes, but each time your level increases, the number of lines increases, and it gets more and more complicated.
You might think it's too easy early on.
However, clearing the simple stages is also important.
The hints to clearing the later, more complicated stages can all be found scattered through the simple stages.

Some unique types of line, such as "one way lines" and "overlapping lines", can also be found throughout the stages.
These special lines will encourage your imagination.

Use this chance to activate your mind as you play, by trying to solve this free-to-play brain-training puzzle game.
You're sure to get hooked!!

What's New

Security updates, etc.

In-app purchases

$0.99 - $11.99 per item

Version Information

Version: 3.7.0
Downloads: 10M+
Updated on: Oct 21, 2025
Released: May 23, 2017
Requires: Android 9

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1LINE - one-stroke puzzle game users say on Google Play

★★★★★

Brandon F. Holmes

Really simple concept for solving a continuous process, yet increasingly difficult to guide the drawn line(s) without adding any major discontinuity.

★★★★

A Google user

This is the best mouse trap. Look no further. Such a nice break from the high-gloss, hyper-edit, aural miasma with which we are constantly bombarded. A great way to "snap out of it". I find this type of logic is right in my wheelhouse, so, all I do is "truly" immerse myself in this 98% AD FREE... THAT'S 98% AD FREE!! game. That, in an of itself piqued my interest. This game is my mini, desk size, 80s zen garden. My pocket sized campfire sight, for when noise and light pollution blend day w/night

★★★

jason beckley

Interesting logical game. Draw the shape with 1 line. It would be nice if we could view our achievements on the game instead of having to visit my account each time. I seem to be earning achievements in the wrong order. I have earned achievements for clearing 50 puzzles in a level before clearing 10 or 25 and I have achieved 25 before doing 10. I have an achievement for clearing all the basic levels before finishing level 1.

★★

A Google user

Would be a great game if it weren't for so many ads. I can handle a couple of non-intrusive ads, but this is just another one of those cash-grab pop-up ad pushers.

★