It is very much not that. I respect the ambition the devs had though, but I very much do not understand why people like this game.
That being said, this is a game. It's not an "experience." It has mechanics and rules and a fail state. It's just not very good. Not good pacing (literally and narratively), very very bad combat, a very shallow representation of psychosis, a story much less complex than what the game thinks it is, repetitive puzzles, and the level design (feels weird calling it that but w/e) that feels as linear as it is.
Trying to put the player in the shoes of someone suffering from mental illness is a lofty and commendable ambition. But, it failed. Also, what a poorly thought out ending condition. Like, I get it - but they clearly didn't think about that very deeply. Completely immersion shattering - more so than any other moment in the game by far.
More games should be made like this, though. The attempt is good.
EDIT: Also dear god, I hope the new God of War isn't like this.
EDIT: Also also, is it just me, or was this game insanely easy. I died a few times, but only during scripted sections. Not once during combat, but I played on the auto difficulty. The biggest reason it bothered me is because it really removed a lot of the tension for me, considering the permadeath that was never a worry for me.







