A cursory search found only comedic, light-hearted, fantastical options.
I want something set in the late Pleistocene or early Holocene, roughly 50,000-8,000 years BCE. At least somewhat (pre-)historically accurate (no dinosaurs or wizards, only 2001-esque aliens, at most), incorporating at least the basics of what we now know of that era.
Either a single character or a small group (I'm envisioning something like Skyrim, or a Baldur's Gate style, or some kind of community-planner, like RimWorld or Dwarf Fortress).
Alternately, if anyone still remembers the The Clan of the Cave Bear (novel or movie), I want that, in game form.
Bonus points if it runs on Linux w/o Wine.
Does anything like this exist, or should I just sit down and make it? Danke