Check out Caves Of Qud. Is a super well developed rogue like(lite?), kinda feels like a crazy mix of dwarf fortress, dark souls, and morrowind.
Takes a bit to figure out what the heck is going on, what it wants from you, and how to stop dying brutally to the most simple things, but once you get your toes into it it feels like it has massive potential for exploration and story building.
It has some modes that are more forgiving, but dying in this game is weirdly satisfying in a way I can't describe, I'm not even usually interested in rogue lites but this one is amazing.
It will also run on a potato which is fantastic