Hi MurderMachineX, you have put an unbelievable amount of work into this and there are some great theories I never even considered here before.
I have a few questions - and am interested in whether you included these elements because there is evidence in the game to back them up, or just because you thought it would fit in.
what makes you think there is a working underground railway under Green Zone, and " very strange abominations that they kept in cages" under the town?
Why do you think the Alcatraz warden invented Electric Cherry?
How do you know that the inhabitants of Agartha are called the Vril Ya? As far as I recall, there is a "vril device" in the game but no reference to the Vril Ya (which were a fictional alien race from a totally different story).
Where do you get this from? I remember the pyramid on the moon (MPD) but not one in space, or anything about them being "launched into the sky".
Do you have any sources/evidence that this happened? Also are you aware that two of those countries didn't even exist between 1118 and 1312? So, to say someone is "American" or "German" in that time period doesn't make sense.
This is something that happened in our world - where is the evidence that this happened in the zombies storyline? No one mentions such a book, and, as I said before, unless I missed something, the Vril-Ya are not mentioned in the Zombies universe whatsoever?
There doesn't seem to be any evidence for this in the game whatsoever. What makes you think that freeing herself from Agartha would make her become a god? (ps just a punctuation tip - you don't capitalize the word "god" unless you are talking about The God, as in the one monotheistic deity of Christianity/Islam/Judaism etc. If you are just talking about "a god" that is one of many i.e Zeus, Thor etc) it's lower-case "god".Sorry I teach English and can't help pointing these things out sometimes).
How on earth would anyone send an email in 1955? Where is there evidence that oppenheimer is involved in the zombies story? I don't remember any mention of this in the games.
Why does your timeline start at the beginning , carry on through history and then go back to World War One? If you are writing this in a chronological order which seems to be the case, surely the events of World War One should be right at the start (before the description of what goes on in MOTD).
Don't get me wrong I thoroughly enjoyed reading your timeline article, and you did a good job of putting some of the basic details into the right order, but I think there is a lot more work needed before it comes close to being an evidence-based theory rather than just "What I think happened".