I don't have the link handy, but there's a good Youtube review that compares the two games. One thing that stood out from his comparison was how Obsidian put in

I don't have the link handy, but there's a good Youtube review that compares the two games. One thing that stood out from his comparison was how Obsidian put in farms with livestock and crops to show where food came from, while F3 didn't have anything like this.