Not too bad

Nice to see how the blocks fall.Alas it is fun only the first time and then it gets boring.You should add tasks levels and fields...

Interesting

I enjoyed drawing pictures in this game but I personally think it could use more customisation, possibly multiplayer? Very good though.

Boring

After drawing 3 shapes I get bored. Would be better if there were some tasks and levels.

I'm amazed!

At first, I couldn't help from thinking that this was gonna be one of those lame, simple one-lvl games, but after a while I noticed I had been drawing domino sets for like five minutes!
Extremely rewarding, fun (yet simple), easy, and very addictive!
On the other hand, it was, as mentioned, very simple (had there been something more, you'de have an eighter)!
Keep it up!

Childhood

This game brought back some memories of my childhood, sitting at my grandmothers house setting these things up and knocking them down. Now that the nostalgia is over.

Good concept, Now to expand on it.

What I would like to see in this:

[1] Drawing tools, Not just free hand pen, how about a line tool that snaps every 45 degrees, Arc tool to create curves, circle, box, and possibly other shapes.

[2] A setup button, That puts them down once everything has been drawn out, like a blueprint. Possibly have this a toggle between on and off, for those whom like it the way it is now.

[3] Different start points. One or more points set to start the reaction. So you could have it go from the left to the right and up and down at the same time.

[4] Able to save your "Pattern" so others can see it.