Interactive and real time conversation
You have intercepted a mysterious message from the past - a past which is different from ours.
In this alternative past, a XIXth uchronic century, Echo XIX^ is a time patroller who works behind the scenes of History.
You send and receive messages through time in a real time conversation with Echo XIX^.
From now on, the fate of the world and of Echo XIX^ is in your hands.
Impressive time loops
Go back and change the past but remember that time loop effects are rarely harmless...
Whatever, revisiting the past will influence the script.
Will you be a protector, a daredevil or a dodger? Your play-style changes the story: 3 ways of playing,
3 different endings under the attentive gaze of "the eye", the interface through which you communicate with Echo XIX^.