History Fridge / Doom

* The Berserk powerup in ''VideoGame/{{DOOM 2016}}'' now has a hard time limit and switches you to the fists... which is exactly how it's shown to work in the Doom comic, where not only does it have a limited duration, but during that duration, Doomguy yells about how "Guns are for wusses!"
* Classic Doom, the Arachnotron and Spider Mastermind have, compared to other monsters of similar strength, a disproportionately high chance of flinching when they're hit and being interrupted from shooting back. They're giant brains on mechanical legs. Of course they're going to be less resistant to pain.
* People complain about the huge, clunky [=PDAs=] used in ''VideoGame/Doom3'' as an example of {{zeerust}} when they should be using something closer to a smartphone, but it makes all kinds of sense when you consider the setting and context: It's an interplanetary mining operation involving joint private and military efforts, so they ''would'' issue their employees a heavy-duty, hard-to-misplace device with a highly visible screen and long battery life at the lowest possible cost.
* The fight against the Cyberdemon at the end of ''Doom 3'' is a call back to the final boss at the end of Doom 2. A small area filled with continuously spawning enemies and a boss that can only be hurt by one kind of attack.
* The reason why the original cover's demons are nowhere to be found in any of the games is because Doom Guy already exterminated them all. DOOM 2016 strongly hints towards this when you find out that Doom Guy has been committing Demon Genocide since time immemorial, to the point where he used to wear medieval armor while doing so.
** This also explains why the Hell Knights have a drastic design change between the classic games and ''2016''; It's likely that the Slayer's hunted all of the original Hell Knights to near-extinction, so Hell had to resort to using a different clan of Hell Knights.
*** Further backed up by Doom Eternal introducing the Gladiator, a boss that bears more than a passing resemblance to the original Hell Knights. It's possible that Gladiator is among the last of the original Hell Knights.
* In 2016 Doom, the demons speak of a demon that created the armor for the Doom Walker. If one looks at Doom Walker's armor, it looks like a standard Space Marine Armor (Complete with production number and logos of manufactures). If this is the same armor that the demons speak of, why does it not look like some kind of demon armor. The reason, it's a call back to DOOM 2. Rememer that John Romero was the real enemy of the game, he even says (backwards) that you have to defeat him to win the game. He helped create the game in real life, and is an enemy in DOOM 2. He is the demon who created DOOM Slayer's armor because he made the game. Makes the Demons warning seem kind of meta when one thinks of it.
* In 2016 ''DOOM'', it is mentioned that the UAC exploited Hell in order solve a major energy crisis. Since the game is implied to follow the continuity of ''VideoGame/DoomII'', it can be presumed that said energy crisis was the result of mankind having been driven from Earth and forced to quickly colonise new lebensraum, while suffering from a lack of preparation and resources.
** Or since the Vault-Tec logo appears on one of the doors in the UAC facility, the energy crisis could refer to the Resource Wars and the Great War from the ''VideoGame/{{Fallout}}'' series. Bonus points for the game taking place in the 2140s, which would be seventy years after the Great War, and roughly twenty years before the original ''VideoGame/{{Fallout|1}}''.
* The music that plays in Map 11 of The Plutonia Experiment is the same music that plays at the end of Episode 3 of the first game. Why? Doomguy is recalling what happened to Daisy to keep himself motivated in the face of being stalked by [[DemonicSpiders Arch-Viles]].

* While the [[FinalBoss Spider Mastermind's]] agro noise is really just a StockSoundEffect, it sounds kinda like she's saying "Who is it"? which would make sense in context (she's wondering how the hell a [[BadassNormal mere human]] made it all the way to her lair in Hell.)

* The Movie’s plot [[SlidingScaleOfAdaptationModification doesn’t seem to have much connection to the game’s plot]]...Until you realize that it was based on one of Doomguy’s [[MultipleChoicePast possible pasts]]. Remember how it was stated that the reason why Doomguy was stationned on Mars was because he attacked his superior officer after the superior officer ordered Doomguy to shoot civilians? The same thing happens in the movie. Sarge orders Reaper (along with the rest of the squad) to shoot civilians, the latter refuses, which then leads to him fighting Sarge at the end. They basically loosely based the movie on one of Doomguys’s possible origin stories!
* Who do those candle eyes belong to? It couldn't be the eyes of the Icon of Sin (as it has white eyes) nor those of the Cyberdemon on a similar principal. Barons possibly, though the objects never appear in Episode 1, not to mention they appear to have solid black eyes. So who? It's the eye of the Spider Mastermind, as they both have the same shape, and red coloration around the eye, watching Doomguy as he slaughters their minions before the inevitable showdown. Could double as fridge horror as well as your every movement has probably been tracked from the beginning.
* In Doom 1, the first Episode ends with the Doomguy dying and being sent to Hell, which is where Episode 2 begins. Therefore, Doomguy isn't even alive after the end of the Episode 1 and if Doom 2016 follows Doom II, he's been dead for who knows how long. Doomguy was badass when he was just human, but he isn't anymore. The Demons only made Doomguy even MORE badass by killing him.
* In the last level of Episode 1, you can see some Hellish influences creeping into the level design, foreshadowing the corrupted techbases you see in Episode 2. Similarly, the last level of Episode 2 is completely devoid of techbase elements, presaging the full-fledged Hell levels in Episode 3.

* In TNT: Evilution from ''Final Doom'', the forces of Hell invade via a spaceship. Looks like another race somewhere opened a hell portal, too.

[[folder:FridgeLogic]]
* The presence of chainsaws on Mars is also lampshaded in ''Doom III'', where several [=PDAs=] complain about chainsaws ending up on a decidedly tree-less Mars. (They were a UAC shipping error.)

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!!!FridgeBrilliance

* The Berserk powerup in DOOM 2016 now has a hard time limit and switches you to the fists...which is exactly how it's shown to work in the Doom comic, where not only does it have a limited duration, but during that duration, Doomguy yells about how "Guns are for wusses!"
* Classic Doom, the Arachnotron and Spider Mastermind have, compared to other monsters of similar strength, a disproportionately high chance of flinching when they're hit and being interrupted from shooting back. [[spoiler:They're giant brains on mechanical legs. Of course they're going to be less resistant to pain.]]
* People complain about the huge, clunky [=PDAs=] used in ''Doom 3'' as an example of zeerust when they should be using something closer to a smartphone, but it makes all kinds of sense when you consider the setting and context: It's an interplanetary mining operation involving joint private and military efforts, so they ''would'' issue their employees a heavy-duty, hard-to-misplace device with a highly visible screen and long battery life at the lowest possible cost.
* The fight against the Cyberdemon at the end of Doom 3 is a call back to the final boss at the end of Doom 2. A small area filled with continuously spawning enemies and a boss that can only be hurt by one kind of attack.
* The reason why the original cover's demons are nowhere to be found in any of the games is because Doom Guy already exterminated them all. DOOM 2016 strongly hints towards this when [[spoiler:you find out that Doom Guy has been committing Demon Genocide since time immemorial, to the point where he used to wear medieval armor while doing so.]]

* In 2016 Doom, the demons speak of a demon that created the armor for the Doom Walker. If one looks at Doom Walker's armor, it looks like a standard Space Marine Armor (Complete with production number and logos of manufactures). If this is the same armor that the demons speak of, why does it not look like some kind of demon armor. The reason, it's a call back to DOOM 2. Rememer that [[spoiler: John Romero]] was the real enemy of the game, he even says (backwards) that you have to defeat him to win the game. He helped create the game in real life, and is an enemy in DOOM 2. He is the demon who created DOOM Slayer's armor because he made the game. Makes the Demons warning seem kind of meta when one thinks of it.

!!!FridgeHorror

!!!FridgeLogic

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* While the [[FinalBoss Spider Mastermind's]] agro noise is really just a StockSoundEffect, it [[{{Mondegreen}} sounds kinda like she's saying "Who is it"?]] which would make sense in context (she's wondering how the hell a [[BadassNormal mere human]] made it all the way to her lair in Hell.)

** Which has a bit of fridge logic in itself, since a brain is the ONLY part of a body that cannot feel pain at all (it processes pain but actual harm done to the brain itself can't be felt)
** Possibly it's not actually pain, but unintended spasms caused by the punishment being rained upon them, then?

* In 2016 Doom, the demons speak of a demon that created the armor for the Doom Walker. If one looks at Doom Walker's armor, it looks like a standard Space Marine Armor (Complete with production number and logos of manufactures). If this is the same armor that the demons speak of, why does it not look like some kind of demon armor. The reason, its a call back to DOOM 2. Rememer that [[spoiler: John Romero]] was the real enemy of the game, he even says (backwards) that you have to defeat him to win the game. He helped create the game in real life, and is an enemy in DOOM 2. He is the demon who created DOOM Slayer's armor because he made the game. Makes the Demons warning seem kind of meta when one thinks of it.

** The Chaingun's general role as an mixed purpose assault rifle/light machine gun, despite it's ammunition, and bulky size seems weird initially. However, considering the setting of the original game (On the moons Phobos and Deimos) it would make even more sense, as it'd be a bulky weapon that would survive the harsh planetary conditions out of Earth, and a low power, electronically powered weapon to be used in warfare in the void of space (as normal automatic weapons would probably cause marines to fly off into space due to the recoil of standard designs, and high power cartridges)
* The Movie’s plot [[SlidingScaleOfAdaptationModification doesn’t seem to have much connection to the game’s plot]]...Until you realize that it was based on one of Doomguy’s [[MultipleChoicePast possible pasts]]. Remember how it was stated that the reason why Doomguy was stationned on mars was because he attacked his superior officer after the superior officer ordered Doomguy to shoot civilians? The same thing happens in the movie. Sarge orders Reaper (along with the rest of the squad) to shoot civilians, the latter refuses, which then leads to him fighting Sarge at the end. They basically loosely based the movie on one of Doomguys’s possible origin stories!

* In the last level of Episode 1, you can see some Hellish influences creeping in to the level design, foreshadowing the corrupted techbases you see in Episode 2. Similarly, the last level of Episode 2 is completely devoid of techbase elements, presaging the full-fledged Hell levels in Episode 3.

* The unnamed protagonist of Doom 3 is probably actually called "Marine Transfer", considering that is what appears on the passenger list at the start of the game (alongside Elliott Swann and John Campbell).

* Who do those candle eyes belong to? It couldn't be the eyes of the Icon of Sin (as it has white eyes) nor those of the Cyberdemon on a similar principal. Barons possibly, though the objects never appear in Knee Deep in Doom, not to mention they appear to have solid black eyes. So who? It's the eye of the Spider Mastermind, as they both have the same shape, and red coloration around the eye, watching Doomguy as he slaughters their minions before the inevitable showdown. Could double as fridge horror as well as your every movement has probably been tracked from the beginning.

* In 2016 ''DOOM'', it is mentioned that the UAC exploited Hell in order solve a major energy crisis. Since the game is implied to follow the continuity of ''DOOM II'', it can be presumed that said energy crisis was the result of mankind having been driven from Earth and forced to quickly colonise new lebensraum, while suffering from a lack of preparation and resources.

* Doom is the sequel to Wolfenstein: there are two hidden levels from the previous game. Okay, sounds reasonable enough; however the enemies are [[GodwinsLaw Nazis.]] In a Doom game. That focuses on demons and hell. Think about that for a moment. [[AcceptableTargets It all makes sense, why wouldn't there be Nazis in hell?]]
** Also related is the fact there aren't any dogs in the secret levels. One wouldn't expect animals to be subject to the same punishment as the people that trained them.
*** And considering that they're ''dogs'' specifically, chances are they [[WesternAnimation/AllDogsGoToHeaven got a free pass]].
** Furthermore, notice how only the SS Officers are present, but not the regular soldiers. The soldiers, or Wehrmacht, were just ordinary people fighting for their country. The SS, however? They orchestrated most of the notorious war crimes of World War II. They are ''definitely'' going to Hell for their actions.
*** This is a common misconception, as the Wehrmacht committed more than its own share of war crimes. However, since the SS tended to dabble in the Occult (hence the popularity of {{Ghostapo}} stories), chances are these SS goons you encountered did ''something'' to give themselves some degree of freedom when they went to Hell. So they could build their own fortress and keep the demons out (or tame some in the case of Pinkies).
* The final boss of ''Doom II'' is [[spoiler:John Romero's head on a stick obscured by a giant image of a Satanic monster called the "Icon of Sin"]]. Appropriately, it is the source of all the monsters you've been fighting up to now, [[spoiler:which of course is John Romero's duty as a game designer.]]

* Levels set on Earth become a lot more disturbing when your realize that the demons had to make Earth fit them. Meaning that they horribly scarred the land, and slaughtered hundreds, if not thousands of innocent civilians to make it that way. And who knows what kind of reality warping powers they used to turn the landscape into the... Abstractness we see. And well, they're demons.

* WordOfGod has confirmed that Doomguy is the son of [[VideoGame/CommanderKeen Billy Blaze]]. This means that in the ''Doom II'' bonus level Grosse, he not only found four lynched clones of his own father, but he was forced to [[SelfMadeOrphan kill each of them]] in order to progress through the level.
** Following up on this, what happened to the Yorps and Gargs, the natives of Mars from the first Commander Keen game? Demons were unleashed on their moons and if they reached the planet's surface, they'd be defenseless. And that's if the UAC didn't do anything to them first.

* {{Lampshaded}} in the ''Doom II'' ending: the Marine wonders where all the bad people go, now that he just trashed Hell.
* The presence of chainsaws on Mars is also lampshaded in ''Doom III'', where several [=PDAs=] complain about chainsaws ending up on a decidedly tree-less Mars. (They were a UAC shipping error.)

*** This is a common misconception, as the Wehrmacht committed more than its own share of war crimes. However, since the SS tended to dabble in the Occult (hence the commonality of TheGhostapo), chances are these SS goons you encountered did ''something'' to give themselves some degree of freedom when they went to Hell. So they could build their own fortress and keep the demons out (or tame some in the case of Pinkies).

* The music that plays in Map 11 of The Plutonia Experiment is the same music that plays at the end of Episode 3 of the first game. Why? Doomguy is recalling what happened to Daisy to keep himself motivated in the face of being stalked by [[DemonicSpiders Arch-Viles]].

* Who do those candle eyes belong too? It couldn't be the eyes of the Icon of Sin (as it has white eyes) nor those of the Cyberdemon on a similar principal. Barons possibly, though the objects never appear in Knee Deep in Doom, not to mention they appear to have solid black eyes. So who? It's the eye of the Spider Mastermind, as they both have the same shape, and red coloration around the eye, watching Doomguy as he slaughters their minions before the inevitable showdown. Could double as fridge horror as well as your every movement has probably been tracked from the beginning.

* Who do those candle eyes belong too? It couldn't be the eyes of the Icon of Sin (as it has white eyes) nor those of the Cyberdemon on a similar principal. Barons possibly, though the objects never appear in Knee Deep in Doom, not to mention they appear to have solid black eyes. So who? It's the eye of the Spider Mastermind, as they both have the same shape, and red coloration around the eye, watching Doomguy as he slaughters their minions before the inevitable showdown.

* The Movie’s plot [[SlidingScaleOfAdaptationModification doesn’t seem to have much connection to the game’s plot]]...Until you realize that it was based on one of Doomguy’s [[MultipleChoicePast possible pasts]]. Remember how it was stated that the reason why Doomguy was stationned on mars was because he attacked his superior officer after he ordered Doomguy to shoot civilians? The same thing happens in the movie. Doomguy’s superior officer orders him to shoot civilians, he refuses, and the rest is history. They basically loosely based the movie on one of Doomguys’s possible origin stories!

** Or since the Vault-Tec logo appears on one of the doors in the UAC facility, the energy crisis could refer to the Resource Wars and the Great War from the ''Franchise/{{Fallout}}'' series. Bonus points for the game taking place in the 2140s, which would be seventy years after the Great War, and roughly twenty years before the original ''Fallout''.