Versiones alternativas

The Indian Censor Board made cuts for an 'A' (adults) certificate by deleting the word "motherfucker", muting the word "fucking" from the line "Jesus fucking Christ" and reducing 50% of the love-making scene especially reducing to a flash the thrusting movements on the bed (when shown continuously) (Length Retained: 37.00 ft).

The film made cuts to achieve a 'PG' certificate in Singapore for cinema exhibition. The film was still cut and was re-rated 'M18' for "scene of intimacy".

SPOILER: The DVD includes an alternate ending: When Spencer is killed, Jillian is not possessed by the alien. Instead, she moves out to the country. Sitting beneath a tree, looking up at the stars, she tunes her radio to the same signals Spencer was receiving while possessed by the alien - her twin babies controlling her movements from inside the womb, listening - and waiting...