Basically what the title says. I’ve only played two games like this so far (Silent Hill 2 and OMORI) and am looking for more.
Could be games, ROM hacks, mods of existing games, etc.
EDIT: So many great suggestions! Getting a bit overwhelmed by how many there are, so I’m going to need to find a way to put this in some kind of list with an order to play the games in. By all means, keep 'em coming, though!
+1 for Metro Exodus. I’m a little surprised that it comes up in discussions like this so rarely. I’m a huge fan of post-apocalyptic settings so I might be biased, but it’s easily one of my favorite games ever.