The Royal Shakespeare Theatre has opened its doors to Westeros with the premiere of "Game of Thrones: The Mad King." The stage adaptation, a decade in the making, earned a four-out-of-five-star rating in its opening night review, praised for its pacy narrative encompassing power struggles, romantic entanglements, and betrayal.

"Welcome to Westeros" is the sign greeting patrons at the Stratford-upon-Avon venue, a nod to George R. R. Martin's fantasy novels that spawned the globally popular HBO series. The stage prequel centers on the Tournament of Harrenhal, a pivotal event in Westerosi history. Playwright Duncan Macmillan has brought together key noble figures for the production, setting the stage for familiar themes of political maneuvering and personal drama.

Michael Shaeffer portrays King Aerys II Targaryen, the host of the tournament. Reviewer Georgina Brown describes Aerys not as a mad king in the vein of Shakespeare's Lear, but as a character defined by paranoia, petulance, and casual cruelty, making him a menacing figure. The production highlights the visual cues of the Targaryen dynasty, such as Aerys's striking white-blond hair, which helps orient viewers less familiar with the intricate lore of Westeros.

Callum Woodhouse takes on the role of Lord Robert Baratheon, a character destined to become king. The play also features Maxim Ays as Jaime Lannister. The staging by Dominic Cooke is described as spectacular, with the first half evoking a dynamic medieval pageant. After an intermission, the production reportedly accelerates, with dramatic and romantic sparks flying.

Despite its nearly four-hour runtime, comparable to "Hamlet," the play maintains a brisk pace. Audiences witness mechanical horses and puppetry as jousting knights are thrown to their deaths. The production incorporates themes and echoes from Shakespeare's history plays and tragedies, particularly in its more intimate moments.

A particularly moving scene features noblewomen, including Catelyn Stark, played by Marty Breen, singing a hymn pleading for their sons' safety from war. This moment is noted for transforming the mythical fantasy into a contemporary reflection on the devastating waste of armed conflict, aiming to draw a new generation to live theater.

"Game of Thrones: The Mad King" is scheduled to run until September 5. Callum Woodhouse as Lord Robert Baratheon in George R. R. Martin's Game of Thrones: The Mad King George R. R. Martin's fantasy novels were the inspiration for the blockbuster series