Seamlessly blending the natural and the unnatural, Blomkamp layers visual gags (signs warning "No Non-Human Loitering") with aural (alien conversations that sound like extreme intestinal distress) while advancing a plot rife with references to E.T., The Fly and Alien Nation.
(The core concept — extraterrestrial asylum seekers land on Earth and become second-class citizens — was explored in the 1990s Alien Nation movie and TV series.)
While built on elements from Alien Nation , Enemy Mine , and even David Cronenberg’s The Fly , District 9 transcends its inspirations by focusing on story, character, and the very human disregard for others until you’ve walked a mile in their shoes.
Sci-fi fans will spot similarities between District 9’s premise and the 1988 film Alien Nation that starred James Caan and Mandy Patinkin, which was later made into a television series.
Like “Alien Nation” (1988), it begins with the premise of a large alien population being stranded on Earth.
(And it’s as little like the 1988 flick Alien Nation as it could possibly be, even if at the shallowest surface, D9 appears to be aping it.)