Heather Bowen was a finalist for a walk-on role through a contest on the official "Halloween" Web site. She won overall through a lottery-style drawing by Moustapha Akkad at the Haddonfield 25 Fan Convention.

At one point Dimension Studios considered making a crossover film featuring Pinhead from the Hellraiser (1987) series, following in the footsteps of Newline Cinema's horror crossover Freddy vs. Jason (2003). A poll was held on the official site, but response from fans was negative and the studio dropped the concept. (To this we say, THANK GOD!)

Before deciding to go with Rob Zombie's version, the studio was about to green light "Halloween: The Missing Years", which would have been a prequel, set within Michael Myers' early days at the Asylum. A script by Clint Morris called "Halloween Retribution" was also briefly considered.

One of the most complex scenes in the film was shot on Monday, February 26 2007, on the campus of Los Angeles City College. The day's shooting facilitated the use of 160 extras and about 100 crew people.

This will be the third Halloween film that Danielle Harris has been in. She first appeared in Halloween 4: The Return of Michael Myers (1988) and Halloween 5 (1989) as Jamie Lloyd, daughter of Laurie Strode. Her character was re-cast in Halloween: The Curse of Michael Myers (1995), in which the character was also killed off. She now returns to the franchise (a popular choice with many Halloween fans) for the third time now playing 17 year old Annie Brackett, even though she is nearly 30 years old.

Additional titles the film was known by, at one point or another during production:

Hall9ween (USA) (working title)
Halloween 9 (USA) (working title)
Halloween: Retribution (USA) (working title)
Trick or Treat (USA) (fake working title)
Untitled Rob Zombie Halloween Project (USA) (working title)