I don't really understand why the score system is the way it is... if the objective is to save the eggs...... shouldn't we be rewarded for saving the eggs??? At any rate, this is pretty fun as a sandbox game!
Since the theme of the jam is failure is progress you get points when an egg cracks.
Every egg that spawns gives you twice the points of the previous eggs(even if they don't break) . So if you save eggs without breaking them you get more points.