For a little while now I've been working on Coming Apart, a sci-fi PbtA game about scrappers in rust-bucket starships working their way to something better by doing high-stakes salvage missions nobody else will touch.
Mechanically, it's heavily inspired by The Regiment, which was John Harper's ashcan WWII game. Lots of lead flying at you (or in this case, shrapnel and fire) as you try to get your mission accomplished.
It's set in a 'post planet' era a few centuries after "Too Good to be True". Planet killing weapons have wrecked humanity's few good homes, but instantaneous interstellar travel has opened the universe. Now, a scattered humanity stretches across incredible distances, linked by delicate webs of trust.
Play wise, I was heavily inspired by the smash 'n' grab style of the Void Bastards video game, but with a base-building component: all the ships are modular (like the modern day ISS), so one of your options is to saw something off and weld it onto your own ship.
Before long, you get a shot at targets from higher danger classes, which opens up more modules, threats, but also new advancements.
Right now the game is at a very early stage; despite its length it's still very much in the middle of refinement. (When I design I seem to go through bloating/contracting phases as I explore a bit and then distill to the core of what I want.)
If any of this sounds like your thing, have a look at the v0.3 rules and playbooks.
There's only been a tiny bit of playtesting; there are marked holes but also undiscovered ones. If you squint a bit, it's playable, but not necessarily fun yet! All the numbers are uncalibrated, so death spirals, unwinnable missions and boring cake-walks are just as likely as thrilling action.
Still, happy to have feedback if you have any!