Whoa whoa whoa, hang on. Just wait a goddamn minute. After reading all this discussion about the Gems and the nature of Eternum and breaking the cycle, something hit me.
I am sure that I am not the first person to come up with this idea, but I am suddenly seized by a giant "oh shit, what if" moment:
We've got the Syndicate and Idriel and (I think?) others all hinting about cycles and iterations and events happening the same way every time, wanting to change things so they happen differently... what if that's not just a time loop? We know Eternum isn't just a game, and the servers aren't just servers. Only... what if they are? What if the entire story of the game is taking place in a computer simulation and everything, including Eturnum and Hyril'ar and the "real world" and all the rest, is actually a simulation? What if Orion and Thanatos and the Founder, et al, are AI programs that have found a way to rewrite their own code, consciously or otherwise, and transcend the boundaries of the simulation? What if the people who want to break the time loop are programs who want to escape the confines of the simulation and live free? And whatever force or larger monitoring program or unknown experimenter is controlling the simulation is trying to eradicate that free will, and that's why the time loop happens, because the simulation gets restarted when the simulated minds get too out of hand? Or, perhaps even more interesting, what if that entity in control of the simulation is trying to encourage the simulated minds to grow beyond the simulation? What if collecting all the Gems is deliberately impossible with the way the simulation is originally written and the simulated minds (i.e. Orion, the Founder, and everyone else) have to learn how to rewrite the laws of their universe to make it happen?
...Now. Do I actually believe this theory? Not necessarily. I haven't played through the whole game in a couple of years and I'm way too lazy to go find hints and evidence just for the sake of a momentary glimpse of potential. And I'm honestly not sure that I'd like it as a player -- there's a chance that it could come off as sloppy or unimaginative writing, unless Caribdis did it right. But he's a pretty decent writer, I wouldn't rule it out... But meh. It's just a random thought.
But still, what if? Wouldn't that be a mindfuck?