In 'Whose Shadow Is That?', players step into the enigmatic world of a night-shift hospital worker who begins to notice unsettling shadows that do not belong to any patients or staff. As strange occurrences escalate, you must navigate through the hospital's dark secrets, paralyzed patients, and ghostly pasts to unearth the truth behind these shadows. Each interaction influences your mental stability and the unfolding story. Choose wisely, as every decision reveals a different layer of the psychological landscape, leading to multiple endings based on the trials of light versus dark within the mind.