Westworld (TV series)'s first season has episodes.
Westworld (TV series) . The first season premiered on October 2 , 2016 , concluded on December 4 , 2016 , and consists of ten episodes . In November 2016 , HBO renewed the show for a 10-episode second season , planned for a 2018 debut . The series ' debut on HBO garnered the network 's highest viewership ratings for a premiere since the first episode of True Detective in 2014 and Westworld ranks as the most-watched first season of an HBO original series ever .