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George R.R. Martin Developing Even More Shows For HBO

Writer George R.R. Martin is currently working on a lot of shows, including five prequels to Game of Thrones, an adaptation of Nnedi Okorafor's Who Fears Death and "hopefully two or three" series based on Wild Cards, which is a sprawling collection of superhero stories set in a shared universe. Now, Martin has revealed that he's working on even more shows.

In an interview with The Guardian, Martin revealed that he's developing “a couple of other shows for HBO that I can’t talk about yet." Those shows seem to be in addition to the aforementioned catalog. As Martin himself can't talk about those shows yet, it's unclear exactly what they will focus on, though -- considering the writer's track record -- they're likely to be in the realm of science fiction and fantasy.

RELATED: Game of Thrones Spinoff Still Officially Untitled, George RR Martin Clarifies

Little is known about the majority of Martin's upcoming Game of Thrones spinoffs, which won't start airing until at least 2020. One has seemingly been shelved, though another has already started the production process. Last month, Martin revealed the title of the first prequel as The Long Night. However, he later walked those remarks back, claiming that The Long Night is not the show's official title, though he says he prefers it.

Actors Naomi Watts and Josh Whitehouse are already set to star the first Game of Thrones prequel series, with principal photography expected to begin early next year.

RELATED: Game of Thrones: Sean Bean Predicts Which Stark Kid Will Survive

Game of Thrones will return for its eighth and final season in 2019. The HBO drama stars Peter Dinklage as Tyrion Lannister, Nikolaj Coster-Waldau as Jaime Lannister, Lena Headey as Cersei Lannister, Emilia Clarke as Daenerys Targaryen and Kit Harington as Jon Snow.

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