There were two different versions of the film made. Version one: The aliens mostly speak in an alien language, with subtitles. There is one alien that speaks English, but it is a lifeless dialogue, with an equally dull voice. Version two: Same version as above, in terms of video. But the alien subtitles and dialogue have been completely removed, along with their dull voices. It has been re-dubbed with a silly Monty Python styled English dialogue, and just as silly voice actors. Who are extremely funny, the alternate audio transforming the movie completely.