Collider ranks 20 television series as the greatest of all time, judging them by storytelling, influence and cultural impact across television’s history.

– 'Succession' is placed 20th for its sharp satire of wealth and corporate power, Shakespearean family drama and consistently acclaimed four-season run.
– 'Game of Thrones' is ranked 19th, recognised for its vast scale, cultural dominance and exceptional early seasons despite criticism of its final series.
– The article presents television as having evolved from post-war broadcast entertainment into a wide-ranging prestige medium shaped by premium networks and streaming services.