Oh wow! I love the 3D graphics and the fun sounds! The boulder was a nice touch! The aiming is really difficult. I would recommend either that the direction of the rock throw should be based on the cursor, or add a crosshair or line so that you know what you are going to hit.
It's not super obvious how the scoring works. And HOW DID JONAS GET SO MANY POINTS? Is there some secret we don't know about?
Overall really impressive entry! Great work! Cute thumbnail too!