1LINE - one-stroke puzzle game

Contains adsIn-app purchases
108K reviews
Content rating
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About this game

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.

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.

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!!
Updated on
Jun 30, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted
108K reviews
A Google user
September 23, 2018
Adpocalypse nightmare. Ads in every corner. Popup ads every few minutes. And then the really long unskippable ads. I'm only 40 puzzles in on the first "level" and I feel like a majority of my time was spent watching ads because the puzzles at the beginning only take about three seconds to beat. Just let me pay for the game.
272 people found this review helpful
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Ashley R
February 19, 2021
Great app if it wasn't for the stupid ads after every 3-4 puzzles. Turning off wifi doesn't stop them either. You still get ads. If you want to show ads, show them after every 10-15 puzzles. Give people enough time to actually enjoy the game. What would also be great is if the music was separate from the sound effects.
22 people found this review helpful
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jason beckley
October 16, 2020
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.
22 people found this review helpful
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