The word "unproduced" means something that has not been made or created yet, as in a movie, play, or any other kind of production. It refers to something that remains unrealized or has not been brought to life. Full definition
He wrote the script after graduating from college and it made The Black List (a list of the best unproduced screenplays of the year) back in 2013, but years went by before he found funding for the film. (slashfilm.com)
Movie scripts, Movie screenplays Original Unproduced Scripts. (myintimcity.com)
But writer - director Barry Jenkins treats identity as more of a prism than a lens in his adaptation of Tarell Alvin McCraney's unproduced play In Moonlight Black Boys Look Blue. (film.avclub.com)