In the last portion of the movie, from the point at which the lead female puts on the special glasses, to the time at which she takes them off, was originally filmed entirely in 3D. The effect was removed for most home video releases, but the UK rental version included the 3D effect in its entirety, with 5 pairs of anagylphic Red/Blue 3D glasses (similar to the ones in cinemas, but without the advertising) inside the box. The UK retail version was the standard 2D version and the cover artwork differed slightly from the rental one.
Peter Jackson's original screenplay for Freddy's Dead saw Freddy aging and growing weak within the dream world. The teens of Springwood would have drug-fuelled slumber parties for kicks, and enter the dream world to beat him up.
A 16-year-old Jacob Johnson, the son that was born to Alice Johnson in the previous installment, A Nightmare on Elm Street 5: The Dream Child (1989), was a major character in the original script written for the movie by Michael Almereyda. In this first draft of the film, Alice, now in her thirties, was killed by Freddy. Taryn, Joey, and Kincaid from A Nightmare on Elm Street 3: Dream Warriors (1987) also returned as the "Dream Police." In the script, Taryn was the "Blade Cop," Joey was the "Sound Cop," and Kincaid was the "Power Cop." Director Rachel Talalay has stated that she greatly disliked original script and that the replacement script by Michael De Luca "saved the day." De Luca also said that he was surprised he wasn't asked to write the screenplay in the first place, since he had done a similar last-minute rewrite on A Nightmare on Elm Street 5: The Dream Child (1989).
When shown theatrically audience members were given one pair of red cardboard 3-D glasses with movie taglines printed on it. The inside arms had adhesives for attaching to standard glasses. There was also an advertisement for House Party 2 (1991) printed on the outside of one arm.
John Doe is supposed to be Jacob from the previous film. When they could not secure the return of Lisa Wilcox (who played Alice), this was vagued up. Earlier versions of the script had Freddy level up by absorbing the entire town of Springwood into the Dream World before moving onto the next town with the Dream Police chasing after him.
(at around 57 mins) When Maggie goes to speak with her mother, she enters the house, screams "Mother!" and slams the door behind her. This is exactly the same as when Nancy come home to see that her mother has placed bars over all the windows of their home in the original A Nightmare on Elm Street (1984).
Although "Freddy's Dead: The Final Nightmare" is the final installment of the "Nightmare on Elm Street" films. Robert Englund would return as the iconic horror antagonist again for New Nightmare (1994) and he would play the role for one last time in Freddy vs. Jason (2003).
One of the writers, Rachel Talalay, got really sick toward the end of their filming schedule, and being a low-budget flick they couldn't delay production to wait for her recovery. So, according to Shon Greenblatt, "Aron Warner actually directed the last several hours of the filming of the movie," including the final scene between Freddy and John Doe.
When released to home video the 3D sequence was shown in standard format, excluding the UK rental version. However, the Laserdisc version had the full 3D sequence along with the regular version. 2 pairs of 3D glasses were included with the disc. The glasses were similar to the ones given out in theaters, minus the adverts, adhesives and taglines. They were also printed on a thinner cardstock. This was the only way to view the 3D sequence prior to the DVD release in the US.
(at around 28 mins) During the scene at Springwood High School, several newspaper clippings and other references to Freddy victims appear. Also, written on the chalkboard is "1945 Hiroshima and Nagasaki attempts fail".
Ricky Dean Logan, the actor who played Carlos was originally cast as John Doe. The role of Carlos simply spoke to him more, and that was the one he lobbied for even though that's not who they had brought him to play. Shon Greenblatt then got the part of John Doe, i.e., the 'Janet Leigh' *qv)-type we're meant to think is the lead until he unexpectedly dies halfway through.
Executive Meddling: A rare after-the-fact example. When the movie was in U.S. theaters in 1991, it ran 100 minutes, featuring many character moments and introductions (Maggie's foster mother doesn't just randomly show up near the end of the movie). However, for whatever reasons, New Line Cinema cut the movie down to 88 minutes for all home video releases, which unfortunately is all that has been available to this day. The German version of the movie, while cut down from the 100 minute version, also featured many of the scenes removed from the home video version.
Said to take place "10 years from now". The official NOES website's timeline opted for 1999 in place of 2001, despite the release date of the film in 1991, taking ten years from now to refer to the conclusion of A Nightmare on Elm Street 5: The Dream Child (1989). This actually impacts the placement of Jason Goes to Hell: The Final Friday (1993), since Freddy Krueger's claw emerged from the portal to Hell at the end of that film to seize Jason's hockey mask. This indicates that the defeat of Freddy in his film preceded the events of Jason Goes to Hell: The Final Friday (1993).
John Doe" comes to think he may be Freddy's son. As noted earlier, this film takes place 10 years in the future circa 1999. The ANOES official website's time line notes that Freddy Krueger's death at the hands of the Springwood parents took place in 1968 (based on the fact that in A Nightmare on Elm Street 5: The Dream Child (1989), Freddy's mother is said to have died soon after Freddy's trial). This film notes that Freddy's child was taken away from him in 1966 (see the chalkboard scene at Springwood High School). Therefore, John Doe would have to be in his thirties to be Freddy's son - which he obviously was not.