“Humans will not the first to travel in time.
Imagine speaking with someone in another time through Facebook Messenger. Imagine being able to help the person on the other side, who is on a devastated and lonely world. Now add to this immersion outside of the conversation with real world interactions, and events in your time being able to affect and alter what happens to this person.
What you get is Time Messenger, a text-based game that also uses media like photos, audio recordings and video recordings to create immersion and a sense of interactivity never seen before in a game, and all that without the need to install external apps - using your Facebook profile on Facebook messenger will suffice.