The TV series with the highest global viewership includes a diverse range of genres and eras, with "Game of Thrones" (2011–2019) leading the pack, followed by other popular shows such as "Stranger Things" (2016–2025), "The Walking Dead" (2010–2022), "13 Reasons Why" (2017–2020), "The 100" (2014–2020), "Orange Is the New Black" (2013–2019), "Riverdale" (2017–2023), and "Grey's Anatomy" (2005–date).