* CreatorPreferredAdaptation: Creator/StephenKing preferred [[spoiler:the significantly bleaker ending of the film.]]
* FollowTheLeader: ''VideoGame/HalfLife1'' was inspired by the book.
* RealLife/MeanCharacterNiceActor: Marcia Gay Harden is everything Mrs. Carmody is not. She's also very much PlayingAgainstType.
** The original draft included some more details about the setting that was left out. Most noticeable was that there was supposed to be a scene that shows the Arrowhead Project going wrong.
** Mrs. Carmody was originally to be depicted as eccentric to begin with. There's also a scene cut out that was suppose to show that her cult caused more casualties.
** The studio wanted to stay faithful to [[spoiler:the more hopeful ending of the original story]], but as stated in CreatorPreferredAdaptation above, King himself preferred [[spoiler:the much more bleak ending]]. In fact, when he first learned of the new ending, he personally intervened to get the studio to approve of it. If he hadn't done that, a film version of the first one might have gone through.