This is so amazing...
...but extremely glitchy. After passing level two, the game decided that I didn't need my throwing apples any more, even though it had a sign stating that I could use them on that level. No big problem.
Then it would not let the "Press E to Doodle" sign go away. Even after I came across another place to doodle, it still kept it up.
The final straw was when it decided that enemies, like bees and cars, did not need to be stopped by solid objects.
I wanted to enjoy it, but the glitches became unbearable. It's such a great concept, so I think if you tweaked it (as well as worked on the sound effects), you'd have a really addicting winner!