Trivia: Director Russel Mulcahy specifically chose to shoot much of the film in daytime, often in direct sunlight in order to both give the film a contrast to the first two, as well as to lend to a bigger feeling of dread and fear, since typically bad things in horror movies happen exclusively at night and day is portrayed as safer.
Trivia: At one point, the opening scene of the clone Alice in the simulated mansion was going to be longer and include re-creations of more moments from the original film. This was to try and confuse audiences and possibly make them believe that somehow they were seeing the wrong film and create a sense of unease. However, it was deemed far too long, and was trimmed down.
Trivia: When Alice's clone stops the lasergrid from killing the real Alice, there is a shot of the computer screen showing the disintegration of Isaacs, Dr. J. This is a reference to Jason Isaacs, who has a history of appearing in Paul W.S. Anderson movies. Anderson produced this movie, so the circle is complete.