 Like its predecessor, "The Empire Strikes Back" draws from several mythological stories and world religions.It also includes many elements from 1930s film serials such as a childhood favorite of Lucas', "Flash Gordon", which similarly featured a city afloat in the sky.As part of "Star Wars"s 20th anniversary celebration in 1997, "The Empire Strikes Back" was digitally remastered and re-released along with "Star Wars" and "Return of the Jedi" under the title "Star Wars Trilogy