HELLSEED is a first-person horror adventure game set in Italy, 1980. You play as a detective investigating the mysterious disappearance of a colleague from a psychiatric hospital in the province of Turin. As you begin your investigation, you find yourself in the doctor’s house, where strange things begin to happen and a dark presence begins to haunt you. In the game, you must use your investigative skills to solve puzzles and uncover the truth behind the disappearance. To help you with your investigation, you have access to a well-structured inventory where you can collect and examine items found in the game. These items can be used to solve puzzles and progress through the game.