Wow
This game has incredibly potential. I loved it, though I will state a few massive flaws:-
-Drawing isn't 100% accurate, thats forgivable
-Needs challenges, maybe have leaderboards for the quickest times?
-User uploaded levels perhaps, a level editor would be great
-Maybe a tutorial, showing the basics, because often I found myself drawing lines over and over.
However this is a brilliant physics engine and with improvements could really be something special.