Wikimedia Commons/Game of Thrones movie TV First look at Aegon I Targaryen. The Game of Thrones movie begins filming in 2024, written by Beau Willimon (Andor). Explore the dynasty's origin. March 17, 2026 AceShowbiz - Progress is underway on the highly anticipated Game of Thrones movie, with Beau Willimon, known for his work on Andor, officially attached as the screenwriter, Deadline has confirmed. The film is currently in early development at Warner Bros, with a planned start in the fall of 2024.