The following year, Lucas focused on developing Raiders and the Star Wars sequel The Empire Strikes Back, during which Lawrence Kasdan and Frank Marshall joined the project as screenwriter and producer respectively.
Sljedeće godine Lucas se fokusirao na razvoj Otimača i nastavka Ratova zvijezda, Carstvo uzvraća udarac, tijekom čega su se projektu pridružili Lawrence Kasdan i Frank Marshall kao scenarist i producent.