The franchise began in 1977 with the release of the film Star Wars (later subtitled Episode IV: A New Hope in 1981 ), which became a worldwide pop culture phenomenon. It was followed by the successful sequels The Empire Strikes Back (1980) and Return of the Jedi (1983); these three films constitute the original Star Wars trilogy. A prequel trilogy was released between 1999 and 2005, which received mixed reactions from both critics and fans. A sequel trilogy began in 2015 with the release of Star Wars: The Force Awakens and continued in 2017 with the release of Star Wars: The Last Jedi. The first eight films were nominated for Academy Awards (with wins going to the first two films released) and have been commercial successes, with a combined box office revenue of over US$8. 5 billion, making Star Wars the second highest-grossing film series. Spin-off films include the animated Star Wars: The Clone Wars (2008) and Rogue One (2016), the latter of which is the first in a planned series of anthology films.