Knock Knock - One Line Drawing play online

A simple but addictive one-line puzzle game thats completely free to play.
Every Chapter is a unique, hand-crafted world to explore.
During your commute, before you sleep enjoy downtime with brain training.

How to play
There is only one rule:
""Connect all the points with just one line.""
It doesn't matter where you start.
When you get stuck, make use of a hint.

FEATURES
Interactive storytelling as well as puzzles.
Get cute animals and special gifts.
Beautiful classical music.
Save and Share a wonderful illustration.
Interactive animals.

There are 3 Chapters more, and a total of 300 stages. We will continue to update.