Nice game, the design is well done! I think you could maybe add shortcuts for the stamps to make the game a little faster, its too difficult to stamp 4 or 5 parcels before the next badge gets in.  (then again, maybe i am just too slow :D)

Also, even when stamped green correctly (= correct weight, not damaged) it plays the error sound, maybe you could display the score for each parcel so players understand better if they understood the rules correctly or not.

The art in this game is so awesome! Love the little anime dudes hidden away :D

Cool, I didn't get very far, I don't think I understand the sorting part, I'm just clicking away dragging packages everywhere, I do like the art and music! Check my game out if you have time!

Nice game. Figured out the parcel weighing system. Was good. I liked that I could stamp the boxes with the Cross or Tick but didn't know why I needed to.