On the subject of scifi roguelikes, I've sunk 700+ hours into Jupiter Hell. I've been playing roguelikes since the original Rogue in the 80s and I think JH is the GOAT: skill tree that rewards experimentation, learning curve that never feels unfair, and that "just one more level" itch propelling you forward. Add in a fresh take on ranged combat mechanics, a strip-it-to-essentials design (a winning run takes me ~3h on Ultraviolence), and a legitimately good custom 3D engine, and you have something that I think will be recognized as a classic for years.
https://store.steampowered.com/app/811320/Jupiter_Hell/