I liked the vector graphics style, seems clean and smooth.
However, I've had some issues with the physics. First, it won't allow me to pick up pumpkins that are to the left of my cart. Second, I managed to flip the cart upside down and push a couple pumpkins through the ground. The physics is always a pain to set up properly though.
The game could use a couple finishing touches like a small popup showing where stuff (mainly the pile) is in the beginning. It's always better than text. Maybe some indication of day/night approaching could help too (for example, some blinking or changing the color of the clock).
But overall, nicely done!