The grand saga of Game of Thrones has come to an end, and the finale has been divisive to say the least. Season 8 faced enough criticism that a petition for a redo that has accumulated more than 1.3 million signatures at the time of writing. That hasn't stopped Game of Thrones from crushing its own records throughout the season, and the series finale broke a major viewership record that has been unbeaten for nearly 20 years at HBO. The finale is now the most-watched single telecast in HBO history.
Source : https://www.cinemablend.com/television/2472030/game-of-thrones-series-finale-broke-a-huge-hbo-record