I believe that the building and crafting really put this game on the map. Having a place to construct multiple suits of power armor was an instant win for me. The opening story and getting to see the houses right from the start before the bombs fell was something out of the movies. Awesome. The factions are creative down to the robots. The add-ons are a plus. The Boston area was a cool idea with baseball themes and robots everywhere makes you want to play it again and again. 300 hours logged the first go around. So much to do on the side.