Really really polished (And fellow italians so bonus points!), the art and the mechanic are great!
I don't know why I had the impression that even when I put effort in filling the whole board, the zombies came out equally powerful, so I found much more effective to just dig and place a random body part in the mold for each timer.
I don't think that was the intended strategy, but it seemed working better (or myabe I'm just blind).
Great work! It's really well made for being a jam game and I'm sure your updates will make the mechanics shine!