Nearly 10 million people tuned in to theGame of Thrones spinoffHouse of the DragonSunday, making it the most watched series premiere in HBO

The series was also the No. 1 trending topic on Twitter Sunday, and garnered more than 2 million Google searches that day

House of the Dragonis a prequel toGame of Thrones, set nearly 200 years before the events of the latter show

It is based on the novelFire & Bloodby George R.R. Martin and tells the story of the House of Targaryen.

Ahead of the premiere of House of the Dragon,Game of Thrones had its highest weekly audience on HBO Max last week.