I'm looking forward to it, if only because it will give more stuff for modders to work with.
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I'm playing a modded game where every single faction is some kind of human. There's 13 of them. Sadly while the game can track the same species for a race for like 2 - 3 factions for some reason it can't track it for 13 so it splits it into different species even if they're the same, but 2 - 3 will be considered the same species.
Anyway, I set it so their ethics are all about the unrest and deviation. What happens is that every faction constantly has rebellions and changes their ethos nonstop. Thus it becomes a game of CK2 in space.
I did this too, although I did it with Fermi Paradox and let myself explode organically, and I didn't have that problem. Did the game start with all those factions separate?
Anyway I almost wish it had happened in my game. Space racism would've really greased some wheels to keep the galaxy interesting. As-is they rebelled but always ended up drifting to fanatic egalitarian / pacifist, having peaceful relations with everyone forever, and finally federating. Still a good story I guess, but not the one I was expecting, and probably not as fun to play through either.
Fermi Paradox?
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My all human game has had an interesting twist. One of the empires got eaten from the inside by a robot uprising. I'm not sure if this is in vanilla, but this uprising was of assimilators so they converted all their host humans into the Borg. After they finished eating up their host, they went and declared war on this giant-huge-ass federation created by about 60% of the other human empires.
I thought they'd be smooshed instantly because those guys are pretty frigging big, but I think because the federation was fighting against 6 rebellions on the go (goddamn I love the unrest mods) it can't actually defend against them properly. Though the member states is doing its best to stem the tide.
It's particularly great because the gand majority of the Assimilator's forces are actual cyborg humans. The robots are a tiny miniscule portion of their population. So it's just humans vs robot humans.
I'm thinking whether to actually step in and save them. On one hand it's quite fun to watch. On the other if I wait too long, all the humans will be gone. And we'll be left with humans.