Nobody boots up one of these games expecting a relaxing evening. You go in knowing there is a very real chance you will get flattened by the first boss, lose an hour of progress, and still come back for more because pure difficulty has its own weird magnetism.
The hardest games are not just “challenging” in the polite marketing sense. They are mean, demanding, and sometimes borderline cruel, built around precision, punishment, and the kind of learning curve that can make even experienced players question why they started in the first place.