>>83846747
As for systems I'd use Eclipse Phase, Transhuman Space, or the Aliens TTRPG, just stat your own monsters, braindead easy.

maybe they just invented the internet and gayed themselves to death like the eldar.

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>>83846811
So the Therians then, that works

>>83846758
>just stat your own monsters
Vacuum metastability event. There's a bubble of space in which the laws of physics don't allow for matter and energy as we know them expanding at lightspeed. Fortunately, FTL drive is a thing so it becomes possible to run away.

>>83846747
I'd run under the premise that life is super common in space, and as humans get into the stars we come across remnants of civilization on nearly every planet we land on, but absolutely zero signs of intelligent life. Then they find some weird thing and it just becomes Alien. Overall the implication would be something has or is wiping out every spacefaring civilization

>>83849510
Time travel is invented. It turns out that changing the past changes the timeline and destroys the previous timeline. Humans being humans, people begin changing the timeline for their own ends, and attempts to stabilize the timeline at a single outcome via time police, banning time machines, changing history so the time machine is never invented, banning high technology, etc. all prove ultimately futile. The timeline keeps changing until it finally hits a stable state: a world where time travel was never invented because beings intelligent enough to build time machines never evolved in the first place or went extinct before they could do so. This is the answer to the Fermi Paradox; the universe is empty of technological civilizations because technological civilizations inevitably eventually retroactively erase themselves.

>>83846747
>>83846758
>>83846839
most common is definitely this kind of stuff, having something intelligent hunting down all life. whether that's reapers or tyranids or gray goo or deathmoons or whatever is up to you.
the other option would be to do a natural apocalypse, like something fuckhuge from deep intergalactic space blasting through the galactic center at speed, triggering a starburst that just irradiates the fuck out of every single star system in the galaxy and scours it. that's the kind of thing that could plausibly happen in RL, so it's got a little more of that creep factor to it.

>>83849560
I can dig this one

>>83849560
that seems like a much harder apocalypse to build a campaign around.

>>83849712
I had a counterpoint but it was retroactively erased

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>>83849632
>the other option would be to do a natural apocalypse, like something fuckhuge from deep intergalactic space blasting through the galactic center at speed, triggering a starburst that just irradiates the fuck out of every single star system in the galaxy and scours it. that's the kind of thing that could plausibly happen in RL, so it's got a little more of that creep factor to it.

The stars are going out. The shroud is contracting inward. The blackness of space bears down on us. Whispers through comm systems tell us there is nothing to fear so long as we extinguish the lights on our worlds and await Their arrival.

Hey incidentally, what was that fantasy game that had players digging through what remains of the Earth as the light from an evil sun shines in after them? I’d like to capture the claustrophobic horror of a game like that in space.

>>83846747
I actually used the Delta Green system, statted my own stuff up, made some mechanics for dealing with necromorphs, and ran my own Dead Space game set just before a marker event.

>>83851400
Black Sun Deathcrawl

>>83849560
That’s the most terrifying fucking idea I’ve ever heard. I love it

>>83851458
Yeah, that’s the one. Cheers.

>>83851429
Any reason why you used DG? I was actually wanting to do something similar (PCs run a colony, corpos dig too deep, PCs react to irreality-alien incursion) using Mothership.

>>83851805
I'm a bit more familiar with the system, and the combat itself is mechanically limited(in a good way I feel) and very deadly. I also find a bunch of the more mundane skills somewhat useful for fleshing out characters and potentially having more fun/funny consequences before and after an outbreak happens. I guess it depends if you want it more combat heavy or problem solving heavy, since a Slasher and a Pregnant wiped the whole team for the most part.

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>>83846747
Rifts is post-apocalyptic and has a tri-galactic setting attached to it called Phase World.

>>83851841
Yeah, the combat being so wipe-out is what really stuck with me for DG, but I mostly thought about it in the sense of human-human firefights. I guess the game’s deliberately designed so that monsters break that tactical bedrock.

>>83851902
Monsters can break the mold, but I basically made it so that necromorphs were hard to kill. I.E. either piling up tons of damage to the point that the thing is just disabled for the time being, or getting lucky and knocking off a limb. I basically made them accidentally blow of limbs a few times before their characters went "oh hey, that's quite effective." I also slightly took a high lethality stance, all the weapons were very effective if used right, good RIG armor would save your life, but nothing stops that monster called lethality.