'Batman: Arkham City' follow-up to be a Silver Age prequel

A prequel of Batman: Arkham City is said to be in the works by Rocksteady.

The yet-to-be-announced follow-up to 2011's Batman: Arkham City will be a prequel based on the Silver Age of DC's comic books from the 1950s during which the titular hero teamed up with the likes of Superman and founded the Justice League of America, Variety reports.

According to the publication, the Rocksteady Studios title will revolve around Batman's first meeting with the Joker.

Warner Bros. Interactive Entertainment is also expected to reteam a number of DC characters through the title in some form, as part of a push to get audiences used to seeing the superheroes in media outside of film. The game, which WBIE declined to comment to Variety about, will likely hit after 2014, Variety reports.

This comes as part of a mandate by Time Warner to monetize the superheroes through films, games, televised series', and cartoons.

WBIE published Batman: Arkham Asylum in 2009, followed by its sequel two years later. Its sequel sold 2 million units worldwide in its first week, and reached 6 million within its first month.

We've reached out to Warner Bros. Interactive Entertainment for comment and will update this story when they respond.