Wikimedia Commons/Game of Thrones The Mad K TV Game of Thrones comes to the stage. Witness the Tourney at Harrenhal and the rise of the Mad King in a new live theatrical production in 2026. March 10, 2026 AceShowbiz - Another addition to the expansive Game of Thrones universe is coming, but this time it's not a television series. Instead, Game of Thrones will expand through a live stage production titled Game of Thrones: The Mad King, set to debut in the summer of 2026 at the Royal Shakespeare Theatre in Stratford-upon-Avon.