In 'Whose Shadow Is That?', you step into the shoes of an unassuming office worker who discovers a parallel realm where shadows take on lives of their own, revealing dark secrets about the world and its inhabitants. As you navigate through your mundane life, shadows emerge that challenge your perceptions of reality, morality, and identity. Players must solve riddles posed by wily shadows, confront their own shadowy past, and make choices that affect their tenuous grip on sanity. Will you uncover the truth behind these haunting figures before they claim you as their own? The game features multiple endings based on your choices and relationships with the shadows that guide or mislead you.