Magic Pen.

[Johncarllos]

It's a fun little puzzle game where you have to get a circle from point A to point B, using shapes that you draw. It's got good physics, and it's a good challenge. I've beaten every level using less than 40 shapes.

First time I beat it I jumped in at level 4 when my girlfriend's sister couldn't beat it, I didn't know you could make circles.
There are so many ways to finish every level, but building teeter totters to launch the ball is my favorite.

[Mikero]

I got through a bunch of it but got bored at one point or something happened that I stopped playing. Not bad though.

The game is here, for anyone who doesn't know, by the way; http://magic.pen.fizzlebot.com/