History Trivia / Doom

* MultiDiscWork: The original ''Doom'' on DOS was released on multiple floppy disks; two for the shareware version and four for the full game. Its sequel and ''The Ultimate Doom'' were later released on five floppy disks. Later re-releases and compilations during the 1990's and early 2000's later packaged the games and more on [=CDs=].

** The RRTS Squad is comprised of Brits Raz Adoti (Duke), Creator/RichardBrake (Portman), Yao Chin (Mac), Creator/BenDaniels (Goat), Deobia Oparei (Destroyer), and Al Weaver (The Kid);

** The film passed through several studios throughout the 1990's and early 2000's, including Warner Brothers, Universal and Columbia, before the rights fell to Universal once more in 2003 and production was put on the fast track.

*** ''The Troopers' Playground'', a 9-map mod by Matthias Worch originally released in March 1996. It's notable for replacing the Wolfenstein SS in favor of a EvilCounterpart of the Doom Marine via [=DeHackEd=]. Not counting the ''Final Doom'' mods or the fan.contributed Master Levels for ''Doom II'' (as those were commercially endorsed by id), this is the oldest mod featured in the add-on list.

*** ''VideoGame/{{Sigil}}'', a new fifth episode for ''The Ultimate Doom'' created by Creator/JohnRomero himself in celebration of ''Doom''[='=]s 25th Anniversary.

*** ''VideoGame/{{Harmony}}'', an 11-level total conversion/freeware game based off ''Doom II'' by Thomas van der Velden. Despite being originally developed for the the [=ZDoom=] source port, it primarily uses [=DeHackEd=] for many of its original content. In 2011, James Paddock composed a new MIDI pack for the game which was one of his first MIDI pack projects and he would go on to organize other MIDI pack projects for other noteworthy level packs that lacked them initially, such as the aforementioned ''Revolution!'' and the ''Plutonia MIDI Pack'' for ''Final Doom''.

*** The BFG is dummied out in its entirety from the Platform/{{Super Nintendo|EntertainmentSystem}} and Platform/Sega32X ports of the original game, because any maps (or areas in maps) where pickups for it actually appeared were cut.

** In the [=PlayStation=] port of Doom, a press release for the game shown that alongside the new Nightmare Spectre, Nightmare Imps were planned to be included in the game, with a screenshot of one in-game. Nightmare Imps were removed from the released game for unknown reasons, though the capabilities for them still exist in the game's coding (as Nightmare Spectres were created by a special "nightmare" flag that, when applied to a monster, made them translucent with subtractive blending while doubling their HP, which could technically be applied to any monster in the game). Nightmare Imps would later be implemented in Doom 64, though were implemented differently by having their speed and attacks be twice as fast instead of having their HP doubled.
*** According to Aubrey Hodges, the person who created the sounds and music used for PSX Doom, the Archvile was planned to be in PSX Doom, and he even created new sounds for the Archvile, before the Archvile was removed from the game because it proved too memory-intensive for the [=PlayStation's=] RAM and the developers were unwilling to compromise the Archvile to include it. All instances of the Archvile in the included Doom 2 maps were replaced with a hanging meat hook texture.

* ExecutiveMeddling: The [[PortingDisaster infamous]] Platform/SegaSaturn port is a result of this. It originally used the Saturn's 3D hardware, resulting in a better looking and more advanced port than the original PC version. However, Carmack wasn't a fan of the system's 3D rendering style, particularly the fact that it resulted in some texture warping, so he demanded the game was redone with software-based rendering. The result was a rushed port that ran on a low resolution and had a poor framerate because the only option they had the time for was hastily ripping out the Sega 32X's software renderer and running it on hardware it wasn't designed for. [[https://twitter.com/id_aa_carmack/status/519828531950665728 Carmack has admited it was the wrong call.]]

** The Sega Saturn port got hit with this as well. Originally, developers Rage Software created a custom engine that made full use of the system's formidable 2D rendering abilities, and would have run at double the frame rate of the [=PlayStation=] version while losing only a couple of graphical features. Unfortunately, John Carmack of all people vetoed the use of this engine, as one of the downsides of using the Saturn in this way was texture distortion, [[ForWantOfANail which was a deal-breaker as far as he was concerned]]. This resulted in the development team having to hastily tear out the rendering engine from the previous [=32X=] version (the Saturn used the same CPU and a very similar graphics chipset to the [=32X=]) and slap it in, resulting in the finished product suffering from poor performance and noticeably inferior visuals to the [=PlayStation=] version.

* OldShame:
** Creator/KarlUrban does not think highly of his time on this movie.
** The film is also this for Creator/DwayneJohnson. In a 2009 interview, he described the film as an example of "trying and failing" to do a good video game adaptation as well as a cautionary tale of what "not to do," and also [[https://twitter.com/TheRock/status/984852480587513856?s=19 called the movie a "stinker" on Twitter]] while promoting ''Film/{{Rampage|2018}}'' ([[https://twitter.com/DOOM/status/984879084101566466 to the chagrin]] of the official ''Doom'' Twitter).
** Creator/RosamundPike [[https://www.youtube.com/watch?v=ZfXszavE4Ig&ab_channel=ColliderExtras went on the record in 2021]] stating that she feels some embarrassment and guilt over the film's outcome since she believes she didn't do sufficient background research into the ''Doom'' world and what it meant to fans. She also stated that she applied her lessons learned regarding the importance of understanding the fan culture surrounding an adaptation to her prep for her lead role in ''Series/TheWheelOfTime2021''.

** The "Ouch Face" was an expression for the status bar head in the middle of the HUD that was supposed to show if the player received more than 20 damage at a time. In practice, the code was written in such a way that it would only appear if the player took damage and ''gained'' at least 20 health during the same tic, something that was extremely unlikely to occur without the player actually trying to make it happen. The "Ouch face" is fixed in many source ports (such as Boom and [=ZDoom=]) and was officially fixed in the 2019 Unity ports after an update.

** The [[PortingDisaster infamously bad]] 3DO port almost had one more reason to add to its infamy. According to the port's lone programmer, Rebecca Heineman, [[https://twitter.com/burgerbecky/status/675578504352673793 the 3DO version nearly had live-action]] FullMotionVideo cutscenes. Other fans [[https://www.doomworld.com/vb/post/1375471 managed to dig up more stills]] of these supposed cutscenes in all of their SoBadItsGood glory.

* FakeAmerican: Creator/KarlUrban (New Zealand) and Creator/RosamundPike (British) as siblings John and Samantha Grimm. Raz Adoti as Duke and Dexter Fletcher as Pinky.

* FollowTheLeader: While its existence owed primarily due to the term "first person shooter" having not yet been coined, there's a good reason they were called "Doom clones" for a good while -- nearly every other game in the genre made between this game's release and that of ''VideoGame/GoldenEye1997'' take some very obvious design cues from this game, such as the mazelike level design, a progressively stronger weapon hierarchy, secret areas, simple enemy AI, and basic "get to the end" objectives. This is evident even in the best-received FPS games following ''Doom'', and as a result this term is still occasionally used to refer to games clearly inspired by it as there were ''many'' of them.

* IKnewIt: For many years, fans have theorized that Doomguy is related to [[VideoGame/{{Wolfenstein}} B.J. Blazkowicz]], even hinting at being his descendant in ''Wolfenstein RPG''. On January 30th 2018, Tom Hall and John Romero both [[WordOfGod confirmed]] on Twitter that Doomguy is [[VideoGame/CommanderKeen Billy Blaze]]'s son and B.J.'s great-grandson.