Game looks good, sounds fine, and plays fine. I do wish there was a sprint button though and the tutorial should explain the whole stamping and colouring systems. I think the game could have worked very well as an endless-style game where each successful package grants you extra time and the goal was to last as long as possible.
Now for some bugs: Returning to the main menu via the "Exit" button on the pause menu, completely breaks the game and requires a restart to fix it. Sometimes packages would freak out when colliding with anything and get flung into the sky which was pretty funny.