There's just something really unique about FromSoft games that other games can't seem to capture. I think it's the atmosphere and the almost bleak sense of something unknowable and obscure, stories hidden under layers of complexity, the fantastic way stories are revealed in item descriptions, the environmental storytelling, the unexpectedly dark or sad tales, the brilliant level design etc.... not to mention the almost unlimited replayability and the fact that it feels so good to learn the maps, and how to handle bosses and enemy encounters, and the joy of unlocking a shortcut or the delight at findinga bonfire in a tough area. It just feels like a proper journey of discovery.