Neill Blomkamp's debut film with a budget of 3crore USD and returns of 21crore USD,
Starts in a documentary style with the field agent Wikus, explaining his role, who is assigned to deal with the aliens who have settled in a major South african city for over 20 years with a large space ship hovering above with no place to go. The place below comes to be district 9, a slum with the aliens and illegal Nigerians dealing with weapons.
The director has a documentary style of taking, hand held shots which bring out more of the realism to the sci-fi. The aliens look believable, 20 years have passed, so we can assume they're good enough to communicate well with humans, which makes you draw comparisons with the immigrant situations.
The whole slum, the space ship, alien tech never seem out of place. Though the film seems to be many films at once, it stands original all together. The conflict between human life and alien life, one life and many lives, the right and the wrong is for one to judge. Wikus ends up taking lives of many soldiers in the process to get back to his normal self. The soldiers are shown blood thirsty, that following orders is all they know. The higher ups are well off in this whole affair, it's the middle men that have lost their lives. So, it does provide a lot of social commentary in the name of aliens. At last it ends in the same documentary style it opened with, showing Wikus's wife with a metal rose she found reminiscing of her husband and an end shot of an alien with a metal rose, which probably is wikus transformed completely. All in all it keeps you entertained though not too emotionally invested.