ग्रहों का महायुद्ध

When the aliens are investigating the junk in the basement, one of them plays with a bicycle wheel. This is a reference to the original book; the main character observes that, with all the advanced technology the aliens possess, they do not use any wheels, and wonders if the alien life form had skipped the invention of the wheel.

(at around 25 mins) A camera is seen filming the alien despite all electronics being disabled earlier in the film.

There are no opening credits after the title is shown.

For the U.S. theatrical release, the Paramount logo appeared before the Dreamworks logo at the beginning of the film, and the poster credits said, "Paramount Pictures and Dreamworks Pictures present." Since the U.S. version's home video/DVD rights are owned by Dreamworks, the Dreamworks logo at the beginning of the movie appears before the Paramount logo, and the back of the box's cover art says, "Dreamworks Pictures and Paramount Pictures present." In the European version, the original order of the logos and studio names is preserved (and the DVD is released by Paramount).

Edited into The Arrivals (2008)