Throughout the game, Theo frequently takes pictures of his trek for his "Instapix" (in-game replacement for Instagram) account called "TheoUnderStars". Ten months prior to the game's release, an actual Instagram account under this handle was created that posted pictures between April 4, 2017, and September 9, 2019, the release date of the Farewell DLC chapter. The account features artwork by concept artist Amora Bettany that took place before, during, and after the events of the game.
Contributed by MehDeletingLater