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!
I need to check out Annapurna games in general, especially since they’re making one of the new Silent Hill games.
Outer Wilds developed by Mobius and published Annapurna.
A game you can ever truly experience once because the “unlocks” and “progression” are about what you learn and know.