Yes, look at me. Play Xenogears three times and still can't fully understand the plot. Thank you very much. Your informations help me clear up many things that I have been confused.
We know that in Xenogears, history starts for quite a long time, 10000 years to be exact. From what I've heard, Xenosaga series will be adapted from Xenogears, and the long timeline will be splitted to make different series. They might not take it directly from Xenogears, but it would probably happened in the same world. Well, what I hope is they would elaborate the story. We all know that Deus is a interplanetary invasion weapon that has been transported from 'other' planet. I would love to hear about the story of the 'other' planet as well. Our only option right now is to wait and see.