https://www.cnet.com/news/george-r-r-martin-has-yet-another-book-series-coming-to-tv/

The series is still going, and has over 40 authors, with blogs, ebooks, short stories, role-playing games, anthologies, comics and audiobooks spawning from the universe.

Martin not only writes for the series, but edits it alongside Melinda Snodgrass. The two were in talks to adapt Wild Cards into a film in 2011 with Syfy and Universal, but only now has there been any further movement on a screen adaptation.