If you like ARPGs, I remember enjoying Untold Legends a lot as a kid. Was a PSP launch title, and had a very dark themeing. I don’t know if my kid memory can be trusted on the quality but I’ve seen a few other people recommend it on here so I doubt it’s bad.
I agree with the guy that said Outer Wilds, even though I can’t finish it because of my thalassophobia.
Personally, the two games that had a really profound effect on me are Disco Elysium and Hi-Fi Rush.
Disco is an incredible political game that really is damn powerful. It’s definitely not for people who just want action.
Hi-Fi Rush is a rhythm action game so I wouldn’t recommend it to people who hate rhythm games or people who hate action. But it’s so fun, so charming and really uplifting.