* CastingGag: In ''Series/{{Andromeda}}'', Lexa Doig played an android and Lisa Ryder played a human. In this film, Doig is a human and Ryder is the android.
* EnforcedMethodActing: When Jason kills Stoney, his blood splatters onto Kinsa, who screams. The scream is genuine: The fake blood burned her actress's eyes.
* FranchiseKiller: ''Jason X'' put the final nail in the coffin of an already-near-dead franchise. Despite ''Film/FreddyVsJason'' being a legit box office hit, the franchise needed a total reboot--six years later--to start up again.
* TheShelfOfMovieLanguishment: The movie was finished in 2000, but did not see release in the United States until 2002 due to a management shakeup at New Line Cinema.
* TroubledProduction: During production, writer Todd Farmer and director Jim Isaac did not get along at all. The film saw constant, heavy rewrites during production that required Farmer to be on set at all times; by his account, the entire crew hated him. Of particular note was tension over the tone of the film: Farmer wanted something more serious, but Isaac wanted something goofier. On the commentary track for the film, they barely try to hide [[http://www.bloodygoodhorror.com/bgh/best-and-worst-horror-commentary-tracks-jason-x their animosity for one another]], taking potshots at each other all the way through.
* WhatCouldHaveBeen: Original plans for the virtual reality segment called for a Pamela Voorhees cameo where Jason--now Uber Jason--would have attacked the virtual Pamela to prove how evil he had become. Betsy Palmer was contacted about doing the scene; when she declined, the filmmakers dropped the idea.

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