Now, if you haven't beaten Halo 4 yet, there may be some spoilers here. So stop reading. OK? As we learn in Halo 4, the Forerunners and Humans already made contact millenna ago and a war broke out. The Forerunners put us essentially back into the Stone Age. Now here's my question; is this something Bungie had already established in the Halo universe or is this something 343 added? I'm really sorry if this is a silly question, I don't know as much about Halo's overall storyline as I'd like to.