One Line
One continuous line, drawn to shield somebody from what is falling.

One Line is a casual art drawing game where your mission is to use a single line to protect an innocent man from a series of unfortunate events. From shielding him against heavy rain to fending off aggressive bees and even angry giants, each level presents a new challenge. Get creative and use the power of One Line to ensure he stays safe, all while enjoying the simple yet satisfying drawing mechanics. The more you play, the more you'll need to think outside the box to keep him protected!
Controls
Draw with the mouse or a finger in a single stroke.
How to Play
- Watch what threatens the man and from where.
- Decide whether you need a wall, a ramp or a roof.
- Draw the line in one stroke.
- Watch the level resolve.
Tips & Tricks
Draw a slope rather than a wall. Deflecting something takes far less line than stopping it, and line length is what you are short of.
Frequently Asked Questions
Is there one correct answer per level?
Usually not. A single stroke can act as a wall, ramp or roof, and many levels accept more than one workable shape.
What happens if my line is too short?
The stroke ends where you lift, so a line that does not reach simply fails and can be redrawn immediately.