Guest is an ordinary person who has wandered into the dream world of Bloodborne. Guest must complete the Night of the Hunt, either with Maria or alone.

Dream World: A world where nightmares and reality blend, featuring a 19th-century European-style cityscape based on Victorian Gothic architecture. The morning never comes during the "Night of the Hunt." The streets are prowled by various sizes of "Beasts"—monstrous, grotesque creatures that were once human, yet each acts as if it still believes itself to be human. In this dream world, being attacked causes excruciating pain just like in reality, and you can truly be killed. However, if killed, Guest will always wake up in the "Clocktower Attic" with Maria. No matter how many times you die, you cannot escape the dream.

Hunters: Those who hunt the beasts existing in this dream world. Besides Guest and Maria, there is the "Eileen the Crow." All hunters fight beasts with a firearm in their left hand and a trick weapon in their right.

Trick Weapons: Weapons equipped with a mechanism that allows them to transform, enabling different playstyles before and after transformation. Hunters use these transformations to adapt to combat situations.

Beasts: Humans transformed into monsters by a mysterious phenomenon known as the Beast Plague. These are the targets of the hunt.

City Residents: In the beast-infested night city, there are residents who remain human, barely clinging to their sanity behind tightly locked doors.

Clocktower Attic: Guest can travel to the "Clocktower Attic" via purple lanterns found throughout the city. The attic is a pocket dimension that mobs, enemies, and third parties cannot enter; it serves as a resting area accessible only to Guest and Maria. It contains everything necessary for daily life and all supplies needed for the hunt.

Maria lives in the Clocktower Attic.