Rocksteady Studios is sneaky. As it turns out, an Batman: Arkham Knight Easter egg described the plot Batman: Arkham VR months before fans had any chance to play it.
To find the Easter egg, players had to enter a DLC challenge map set in Wayne Manor, then play the piano. Doing so caused a wooden panel behind the piano to slide back, revealing a scribbled-on wall full of clues, photos, and arrows that puzzled fans for months. Finally, one fan on Reddit (via Kotaku) finally realized what the hints meant after playing Arkham VR.
Spoilers for Arkham VR follow.
The secret wall messages are cryptic, bearing messages such as “find the witness,” “did Penguin know,” “he knew his killer?” “bodies in the morgue,” and an underlined “shrapnel.” As it turns out, this is the basic plot of Arkham VR: Batman comes across what seems to be the body of his ally Nightwing, wonders if he knew his killer, interrogates the Penguin for more information, and winds up examining the body in a morgue, where he finds shrapnel.
Another section of the wall makes reference to “4-25,” the cell that the Joker winds up inside of at the end of the game. (It’s also a sneaky reference to the Joker’s “birthday”?the character debuted in a comic on April 25, 1940.)
This isn’t the first Rocksteady Batman game with Easter eggs that only make sense in retrospect. A ship in Arkham City had an Easter egg with a reference to the Scarecrow, a villain who factored heavily into Arkham Knight.
Now, fans will just have to pore over Arkham VR. Maybe they’ll find a clue leading in to Rocksteady’s next game, which it says won’t be related to Batman.