Warner Bros. is developing a feature film prequel in the Game of Thrones universe, set 300 years before the original HBO series and centered on King Aegon Targaryen's conquest of Westeros. Beau Willimon, known for House of Cards and Andor, is writing the script following the success of spinoff A Knight of the Seven Kingdoms. The project's path forward remains uncertain amid Warner Bros.' potential merger with Paramount Skydance.
Warner Bros. is in early development on a live-action feature film adaptation set in George R.R. Martin's Westeros, focusing on Aegon I Targaryen—founder of the Targaryen dynasty—and his conquest of the continent, an event approximately 300 years before the original Game of Thrones pilot. Screenwriter Beau Willimon, who served as showrunner on House of Cards and wrote episodes of Star Wars' Andor, has already submitted a draft script, per reports.
The announcement follows critical acclaim for A Knight of the Seven Kingdoms, the latest spinoff, and builds on the franchise's expansion via House of the Dragon, which explores later Targaryen history and is set for a new season. No director or casting has been revealed. George R.R. Martin has teased the project as a 'Dune-sized feature film,' hinting at a major budget. The storyline, previously undeveloped for screen, overlaps with an early-stage HBO series concept and underscores the Westeros lore's appeal despite delays in Martin's sixth A Song of Ice and Fire novel, The Winds of Winter.
Progress is complicated by Warner Bros.' ongoing discussions for a sale to Paramount Skydance. If approved, new leadership under Paramount CEO David Ellison—who plans 30 theatrical releases yearly—could reshape priorities. Nonetheless, Game of Thrones, an eight-season Emmy-winning hit based on Martin's novels, remains one of Warner Bros.' most lucrative franchises, bolstering the movie's prospects amid Hollywood's push into established fantasy IPs.