Pyre. Not for reasons of realism ofc, but never have I ever played a game that made me really feel like I'm actually the person I'm playing as (the reader) and make it feel like I'm part of the story and not just in a game. I think that's for several reasons
-my decisions in the journey make a big impact, I decide where we go and it matters (without being an open world game).
-basically no question is unanswered: why do I decide where we go? Who sings the music I'm listening to at the moment? Who are the people I travel with and what are their motives. It's also rarely a black-and-white between "evil" antagonists und us protagonists, everybody has relevant motives that are not ignored.
-losing is allowed. Might sound dumb, but I think this was important for immersion: there is not just the one path of glory where you always win like in pokemon games etc. If you lost, you lost and have to live with the consequences. You might even lose the most important matches and it WILL affect the story, but thats just the way it goes!
-every decision you take is taken seriously to the last details: favourite example being that the lyrics of the songs are adapted to the current situation (all dialogies ofc too, but these are not voiced). The songs especially blew my mind. Fantastic.
Recently finished pyre, already played bastion and transistor and now enjoying hades, it's crazy cool to see how much super giant improve from game to game and still make distinct masterpieces of art and music.