The unique feature of Echoes is that it relies on our listening skills to solve the mystery . We play detectives who have the ability to perceive sounds, noises, and voices emanating from objects: the "echoes of the past."
Your mission will be to listen to each card in the deck in turn, scanning the objects depicted on each card with an app. Each card is like a fragment of history that you'll have to put in the right order to piece together the facts. And understand what really happened.
It is in fact a kind of audio puzzle that you have to piece together in order to perceive the complete web of the mystery to be discovered, to be recomposed.