(Warning - Easter eggs from Batman: Arkham Knight are to be found below. If you want to find them all by yourself, then proceed with caution...or head off and play the game some more. We'll wait...)
Now, there aren't too many video games that've drawn more critical acclaim and commercial success than Rocksteady's Arkham series. From 2009's Batman: Arkham Asylum, all the way through to the recently released Batman: Arkham Knight, the games have been among the most reliably excellent around - and become arguably the greatest superhero simulators of all time.
And yet, Rocksteady have repeatedly insisted that Arkham Knight will be their final Bat-themed game, with one senior executive, Dax Ginn, even going so far as to add: "We’ve done all we can do here."
But does that really mean that the good folks at Rocksteady, after years of producing some of the finest DC-themed video games money can buy, are really done with the DC Universe?
Well, perhaps not. As intrepid YouTuber Arekkz Gaming has pointed out, there are a couple of Easter eggs lying around in Arkham Knight that might just hint at something pretty incredible.
Rocksteady Could Be Planning a Superman Game
Yup, that's right. Y'see, there are (at least) three pretty substantial Superman-themes Easter eggs hiding out in Arkham Knight, and as it turns out, they might just offer a glimpse of exactly what Rocksteady has lined up for itself...
A LexCorp Billboard
Which, on its own, is a neat glimpse of the expanded DC Universe, sure, but not a whole lot more. Combined with...
A Very Specific Answering Machine Message from Lex Luthor
...though, and it might just hint at a natural plot for a Superman-themed follow-up game. Y'see, it seems that Lex wants to buy WayneTech's Applied Science division - for a billion dollars or more - and that he's not willing to take no for an answer. Which, seeing as it implies a pretty standard level of Lex Luthor-related dastardliness, would make for a natural segue into a Superman game. A Lex-sponsored hostile takeover of Wayne Enterprises, perhaps?
Meanwhile, the biggest clue?
The Game Is Literally Telling Us to Go to Metropolis
Or at least, that poster is.
Now, of course, all of these subtle Easter eggs could well simply be that: fun touches added to get us speculating, but with Rocksteady about to have a DC-shaped hole in its development future, it's certainly not out of the realms of possibility that the end of the Arkham franchise is set to simultaneously be the beginning of another, more Man-of-Steel-ish one.
Superman: Metropolis, anyone?
What do you reckon, though?