Treehouse of Horror XXX/References

Opening sequence

 * The opening sequence is a parody mash-up of  and The Exorcist.
 * The Exorcist was previously parodied as the segment "The Exor-Sis" from Season 29 episode "Treehouse of Horror XXVIII".
 * Dr. Hibbert is playing Tetris.
 * Homer says that giving Bart a baby brother is like introducing Frankenstein to Count Dracula, Dick Cheney to George W. Bush or Ben Affleck to anybody.
 * A poster for the Finding Nemo appears, shortened to "Nemo".
 * A poster for the movie Racecar appears, a parody of Cars.
 * On the mirror Homer sees Nemo's poster mirrored with the text OMEN appearing. This is a reference to The Shining.
 * Mickey Mouse and the, 666, appear as marks on Maggie's head.

Danger Things

 * It's a parody of Netflix's .
 * The title card appears in the same font as the show's.
 * The theme song plays during the title card and intermissions.
 * Stranger Things was previously parodied as Odder Stuff in Season 30 episode "I'm Dancing as Fat as I Can".
 * Lisa goes to the Starcourt Mall, where many important scenes from the third season of the show happen.
 * The rats in the scene are a reference to the ones coming out of the mall in the show, an important point in the story from Chapter 2: The Mall Rats onward.
 * Jane Fonda's Legwarmers of Death is a reference to.
 * Charles in Charge is a reference to the television sitcom .
 * Lisa shaves her head like 's.
 * Bart plays the controversial  game , showing off perfectly how the game is bad, while Milhouse mentions the.
 * Kirk Van Houten throws out a lunchbox, a Prince album, and a walkman.
 * Bart said that Milhouse drank a lot of.
 * In the Over Under, a parody of the show's Upside Down, The Tracey Ullman Show version of Lisa and Bart, as well as the Demogorgon appear.
 * Amazon delivers in the Over Under, with a fleet of flying monsters to deliver packages.

Heaven Swipes Right

 * The segment is a parody of .
 * God sold Heaven to Google.
 * God wears a shirt.
 * Homer parodies Porky Pig's phrase "That's all folks".
 * Choices of bodies:
 * Hans Moleman
 * Charles Montgomery Burns
 * Fat guy on a scooter
 * Professor Farnsworth from Futurama
 * Kid with hand in mouth
 * A purple version of, the Philadelphia Flyers mascot
 * One of The Rolling Stones.
 * While in Mr. Teeny's body, Homer roots for the apes in Planet of the Apes.

When Hairy Met Slimy

 * The segment title is a reference to 
 * The plot of the segment is a parody of .
 * Kang uses just like Thanos did in the Marvel universe.
 * Kodos is curious and always up for some Deep Space Nine, referencing the Star Trek race and the  series.
 * She's also up for some R23some and Jabba the Butt, referencing R2-D2 and Jabba the Hutt from Star Wars, and some Wookie Nookie, a reference to the song of the same name in Moldiver's Mash of Unity album, another reference to making love to a Wookie, one of the species of the series of movies.

Credits

 * Matt Selman's credit "Midselmmar" is a reference to the 2019 horror film .
 * John Frink's credit "Beeltefrink! Beeltefrink! Beeltefrink!" is a reference to the comedy horror film .
 * Rob LaZebnik's credit "Creature From the Black LaZebnik" is a reference to the 1954 horror film .
 * Dan Vebber's credit "Come Play With Us, Danny Vebber" is a reference to The Shining.
 * Megan Amram's credit "The Amarityville Horror" is a reference to the book .
 * Dan Castellaneta's credit "Village of the Danned" is a reference to the 1960 film .
 * Tim Long's credit "Tim Long, and Thanks For All the Fish" is a reference to .
 * Mike Reiss' credit "Diam M for Mike Reiss" is a reference to the film .
 * Mike B. Anderson's credit "Destroy All Monsters B. Anderson" is a reference to the film .
 * Denise Sirkot's credit "Denise+" is a reference to Disney+.
 * Dan Castellaneta's credit "Danny's Not Here, Mrs. Torrance" is a reference to The Shining.
 * Yeardley Smith's credit "Laurel and Yeardley" is a reference to the comedy duo Laurel & Hardy.
 * Chris Edgerly's credit "It Grudge-rly" is a reference to the movies ' and '.
 * Andrea Romero's credit "Andrea "La Llorona" Romero" is a reference to the supernatural horror film .
 * Richard K. Chung's credit "Atilla the Chung" is a reference to.
 * Hans Zimmer's credit "Scissorhands Zimmer" is a reference to the film .
 * Steve Kofsky's credit "The Devil's Own Mr. Kofsky" is a reference to the 1997 film .
 * Norm MacLeod's credit "Norman "Bates" MacLeod" is a reference to the psychological horror film .
 * Louise Jaffe credit "Lulu the Friendly Ghost" is a reference to Casper the Friendly Ghost.
 * Lisa Walder's credit "Lisa Waldemort" is a reference to Lord Voldemort from Harry Potter.
 * Daniel Furlong's credit "I Know What You Did Last Furlong" is a reference to the slasher film .
 * Patrick Laffoon's credit "Night of the Laffoon Dead" is a reference to the horror film .

Opening sequence

 * Maggie uses her demon powers to destroy her toys ("Treehouse of Horror XXVIII").

Heaven Swipes Right

 * An Odgenvillian with a Minnesota Vikings jersey is seen in the crowd at the football scene. ("Coming to Homerica")
 * A photo of Professor Farnsworth is shown as one of the choices of bodies. ("Simpsorama")
 * A photo of the The Rolling Stones is shown as one of the choices of bodies. ("How I Spent My Strummer Vacation").
 * The Simpsons family have dinner at Chalmers' house. ("Bart Stops to Smell the Roosevelts")

Opening sequence

 * The mark of the beast on Maggie's head changes to "Episode 666 or 667 if Fox changes the schedule", referencing the actual number of the episode and the fact that Fox tends to change the air schedules of their show costantly, many times condamning them to cancellation.

Credits

 * A mosaic with a scene from each Treehouse of Horror episode is shown, with the text "Treehouse of Horror XXX" super-impressed. Afterwards, a mosaic with a scene from each of the 600 episodes of the show is shown, with the text "Episode 666" super-impressed.