In 'Nightcall: Who's There?', players take on the role of a cynical detective receiving anonymous phone calls in the dead of night. Each call presents a new case or bizarre dilemma, which must be solved through clever dialogue choices and intuitive reasoning. The game utilizes a unique mechanic where the nightcaller gradually reveals their identity and motive based on the player's decisions. As players integrate clues from conversations and their own intuition, they must navigate a web of deception, conspiracy, and dark humor to uncover the truth. Will you answer the call, or let the mysteries of the night swallow you whole?