One touch Drawing play online

Brain training mind game with amazing puzzle.
This free game helps you to improve your concentration.
One touch Drawing is a simple yet very addictive puzzle.
The rule is very simple.
Draw given figures with only one stroke.
The only problem is "You cannot draw twice the same line".
There are hundreds of handcrafted levels with funny tricks.
All levels are free!
New lines and points like below will make it difficult.
1. Line that must be passed twice.
2. One directional line.
3. Warp point.
4. Direction trigger.
5. Way trigger.
6. Warp Maker. (Very challenging)