In 'Whose Echoes Are These?', players step into the shoes of a troubled sound engineer named Alex who discovers an ethereal echo that seems to carry the voices of the past. Set in a sprawling, abandoned opera house, players must uncover the identities of the spectral voices haunting the halls while delving into Alex's own fractured psyche. As they engage with the echo through a series of structured conversations, players will tackle moral dilemmas, piece together a mystery that intertwines the lives of historical figures, and confront Alex's past choices that shape the present. The interactive narrative shifts based on players' decisions, leading to multiple endings and heart-pounding revelations.