Lego Batman: Legacy of the Dark Knight secretly had Arkham devs from Rocksteady and Warner Bros. Montreal working on it

Right from the get-go, Lego Batman: Legacy of the Dark Knight feels familiar for all the right reasons, and it’s not just because developer TT Games took inspiration from the Arkham series and implemented the Batman: Arkham mechanics that the series was beloved for. Believe it or not, Rocksteady worked in the shadows on the Lego Batman title, as it’s now been revealed that the studio was a co-developer on Legacy of the Dark Knight.

Lego Batman: Legacy of the Dark Knight is the fourth entry in the Lego Batman series by TT Games, but this time around, it throws players into an open-world Gotham City where you glide, grapple, and use stealth to take out enemies and encounter beloved villains, all in a light-hearted, comedic tone.

The game mixes the best tropes from Batman comics, movies, TV shows, and games, neatly packaged in TT Games’ signature Lego humor. The game is officially set to launch on May 22, 2026, for the PlayStation 5, Xbox Series X|S, and PC, with a Nintendo Switch 2 version planned for a later date.

If you’re in the loop, you might already know that, due to a pre-load glitch on Xbox Series X|S, players who pre-loaded the game were, to their surprise, able to play it roughly a week before launch. Similarly, unencrypted files of Lego Batman: Legacy of the Dark Knight were leaked online, allowing some players to pirate the upcoming title.

Back to Rocksteady, the co-developer credit goes beyond mere gameplay inspiration. VGC noted in its review that Rocksteady had been credited as a co-developer on the project in the game’s credits.

Specifically, 24 developers from Rocksteady worked on Lego Batman: Legacy of the Dark Knight, including a designer, a producer, and several senior programmers and artists. Warner Bros. Games Montreal, which also worked on Batman: Arkham Origins and Gotham Knights, is also credited in the game.

Jonathan Smith, head of development at TT Games, explained the reasoning behind the big collaboration and said:

“You can’t think about being Batman in a video game without appreciating the achievements of our friends and colleagues at Rocksteady. We’re inspired by Arkham Asylum’s combat system. Of course we are. Our friends and colleagues at Rocksteady did a generational job in bringing that to life, so we’re going to use it as the basis for any kind of modern experience representing Batman’s combat style.”