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Comic books adaptations have been swelling in popularity over the last few years, and this past summer "The Dark Knight" stormed international box offices.

So, to maximize profits, Warner Bros. has reportedly placed all DC comic book properties on hold.

"A lot of the DC movies at Warner Bros. are all on hold while they figure out [as] they're going to come up with some new plan, methodology, things like that so everything has just been pressed pause on at the moment," writer and director David S. Goyer told IESB.

"The Dark Knight" already has pulled in an astounding $997 million worldwide and will be making a return to selected theaters at the end of January in the hopes that the movie will push beyond the $1 billion mark. With profits like that, it looks like Warner Bros. is now looking to capitalize on comic book movies.

"It was the double header of both ?Iron Man? and ?The Dark Knight? coming out, so more than ever I think they've realized, I think DC was responsible for 15 percent of Warner Bros.' revenue this year, something crazy like that, so they realized that comic books, it's become a new genre, one of the most successful genres," Goyer said.

Marvel Studios already has a plan in place for its upcoming projects and the foundations have already been laid with references in "Iron Man" and also a cameo appearance of Tony Stark at the end of "The Incredible Hulk."

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