Playing through Demon's Souls again and going through Tower of Latria reminded me how unsettling 3-1 was my first playthrough.
>Lord Rydell's cies for help that likely never get answered on a first time playthrough
>The Former Royal's Wife, likely the tower queen herself, tells you how all the other prisoners have either starved or gone mad, swearing fealty to a false image
>the area is so cramped that your forced to kill any prisoners that remain.their unwillingness to attack, and instead raise their arms toward you makes it look like they beg for death
>octupus-headed wardens patrolling the area can one-shot you with their blood-sucking ability at lower levels.
The only other experience I've had that disturbed me, at least in the Souls series, was seeing the full scope of New Londo's flooding for the first time with the hundreds of preserved, bloated bodies. Are there other games where the horror element isn't to just get a single scream out of you?