Scratch

http://scratch.mit.edu/projects/Mockodile/1943389
Sunset Warrior is a new game where the pen tool is used as a weapon against your enemies. Use your mouse to draw lines that represent sword slashes. Draw right across your enemies to destroy them. The lines will eventually thin out and end, so if you want to draw a long line you must draw it quickly! The game features 3 modes:

Escalate: Where the enemies get faster as you progress.
Lights Out: Where you battle ninjas in pitch dark! While the ninjas aren't traveling that quickly, you still must use your good eye to spot them!
Intense: Battle super-fast ninjas in the dark! It is a challenge to get even more than a few kills.

Try it out for yourself and see how you do! All comments are appreciated!