Edit: Addendum:
-Everything being a simulation ala Thirteenth Floor undermines the revelation from the Andromeda tapes that people like the creators of Alien have been able to project into Eternum long before the founding of Ulysses or the creation of the VRMMO.
The problem I have with this statement is that according to Langston's audio logs, #48 to be specific, they only say the creators of Alien had a dream which doesn't explicitly imply they projected into Andromeda, but it doesn't preclude the possibility either so it isn't an established fact.
That coupled with the revelations provided by William and Eternum's probable ties with Caly's story about Anima imply that Eternum has existed for a very long while, possibly even before humanity in the "real world" even existed.
Also it kinda undermines the point of this game being set in the same universe as "
Once in a Lifetime" where the big reveal in that game is that magic and the supernatural exist in the setting, so any scifi component that this game has is essentially a smokescreen that masked its true nature, which we are now finding out in the recent updates.
What's to say that Eternum/Once in a Lifetime universe isn't a simulation? That was the whole point with The Thirteenth Floor, simulations within simulations which is highlighted by how the movie ends with a scene were the protagonist is in the "real world" which then ends with the distinct visuals and sound of a monitor turning off:
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It also conveniently means that any backstory and history can be entirely manufactured and no one in the Eternum-worlds would be any wiser to how they came to be.
And as Axel points out in Ch6 "
The amount of processing power that’d be required to run such a game would be unfathomable., And yet... there is nothing", which discounts the possibility they are living in a simulation that's parallel with those available through Eternum, which in turn means the servers aren't in their simulated world - they are one level up and it's we, the players, who run the simulation. I know it's a metaphysical bullshit argument, but it is still a valid argument when compared to any other argument having to do with the Eternum-universe and how it exists.
Do I believe this is the case? Not really, but it's an interesting argument to kick around while we run around in our own universe that may be simulated too, constrained by the rules imposed by its creator.