The first film was followed by two 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, albeit to mixed reactions from critics and fans. Finally, a sequel trilogy to conclude the nine-episode saga began in 2015 with The Force Awakens. The first eight films were nominated for Academy Awards (with wins going to the first two released) and were commercially successful, with a combined box office revenue of over US$8. 5 billion. Together with the theatrical spin-off films The Clone Wars (2008), Rogue One (2016), and Solo: A Star Wars Story (2018), Star Wars is the second-highest-grossing film series of all time.