Yes, all 3 parts of Chapter 3 need to be downloaded. The download is just broken into smaller roughly 3GB files (for the first 2 parts, the third part is only about 530 MB). All 3 parts need to be in the same folder to extract properly.Do I need to download all 3 parts of chapter 3, or is there a complete chapter 3 somewhere? Do I extract all the parts to the same folder? Will they play correctly if extracted separately?