History Trivia / MetalGearSolid4GunsOfThePatriots

* CharacterOutlivesActor: Creator/KojiTotani, the Japanese voice actor of Revolver Ocelot, died during the production of this game. As a result, the role was recast to Creator/BanjoGinga, Liquid Snake's Japanese voice, with Liquid Snake's persona having (apparently) taken complete control of Ocelot's mind as a convenient excuse for the recast.

* DummiedOut: Otacon and Rose have Codec audio files for the [[spoiler:FinalBoss fight against Liquid which went unused, as the Codec cannot be activated during said battle.]]

* MemeAcknowledgment: According to David Hayter, the voice director of the games brought in ''[[WebAnimation/AwesomeSeries Metal Gear Awesome]]'' for the cast to watch together during the recording of this game. Following this, Hayter and Creator/{{Egoraptor}} met at Anime Expo. [[https://www.youtube.com/watch?v=v4NJ4KhWQNo This was the result.]]

* NoPortForYou: One of the more infamous examples, as ''Metal Gear Solid 4'' made heavy use of the [=PS3=]'s Cell architecture, and was the first game on that system to use a dual layer Blu-ray Disc. All of this resulted in ''Metal Gear Solid 4'' being one of the hardest games to port, which is why it never showed up on the UsefulNotes/Xbox360. While the Platform/XboxOne likely could support ''Metal Gear Solid 4'' as a result of it utilizing Blu-ray discs, Kojima's firing from Konami in 2015 likely means that there isn't anyone to shepherd a potential port of ''4'' to modern platforms.

* TwoVoicesOneCharacter: Though Creator/BanjoGinga takes over as Revolver Ocelot's voice actor, some of his dialogue includes archive audio from the late Creator/KojiTotani.

* NoPortForYou: One of the more infamous examples, as ''Metal Gear Solid 4'' made heavy use of the [=PS3=]'s Cell architecture, and was the first game on that system to use a dual layer Blu-ray Disc. All of this resulted in ''Metal Gear Solid 4'' being one of the hardest games to port, which is why it never showed up on the UsefulNotes/Xbox360. While the UsefulNotes/XboxOne likely could support ''Metal Gear Solid 4'' as a result of it utilizing Blu-ray discs, Kojima's firing from Konami in 2015 likely means that there isn't anyone to shepherd a potential port of ''4'' to modern platforms.

* KillerApp: Often pointed to as the game that began the redemption of the UsefulNotes/PlayStation3 after a very divisive launch, with it being followed up by ''VideoGame/LittleBigPlanet'', ''VideoGame/Uncharted2AmongThieves'', and ''VideoGame/GodOfWarIII'' in helping the [=PS3=] becoming a must-have console like its [[UsefulNotes/{{Wii}} two]] [[UsefulNotes/Xbox360 competitors]]. At least, until the 2011 PSN hacking sent Sony back to square one.

* DyeingForYourArt: David Hayter's voice for Old Snake featured age-based vocal decay, taking the GutturalGrowler trope up to eleven. It apparently gave him trouble doing Naked Snake's voice again in ''VideoGame/MetalGearSolidPeaceWalker''.

* IKnewIt: [[spoiler:Big Boss is alive.]]

* ScienceMarchesOn: Snake's rapid aging was inspired by a theory that Dolly the Sheep's premature death was a byproduct of the cloning process. This has since been discredited.

* RetroactiveRecognition: Keen-eyed viewers will notice that Screaming Mantis' face is modeled after Scarlett Chorvat, who played Creator/ChristineTaylor's girlfriend Joyce in ''Film/DodgeballATrueUnderdogStory''

* CreatorChosenCasting: It's said that Kojima specifically chose Creator/ChikaoOhtsuka to voice [[spoiler:Big Boss in hopes that it could help him and Creator/{{Akio|Otsuka}}, who were estranged at the time, reconcile. ''And it worked''.]]

* TalkingToHimself: Averted. Being the first game since the [=MSX2=] era to feature both, Solid Snake and [[spoiler:the elder Big Boss]], the latter's role is played by [[spoiler:Richard Doyle, the voice of The Fury in the English version, and in the Japanese version by Chikao Otsuka, Akio Otsuka's [[RealLifeRelative real life father]].]]

* NoPortForYou: One of the more infamous examples as ''Metal Gear Solid 4'' made heavy use of the [=PS3=]'s Cell architecture, and was the first game on that system to use a dual layer Blu-ray Disc. All of this resulted in ''Metal Gear Solid 4'' being one of the hardest games to port, which is why it never showed up on the UsefulNotes/Xbox360 and why it hasn't received an aforementioned standalone re-release.

* NoPortForYou: One of the more infamous examples; ''Metal Gear Solid 4'' made heavy use of the [=PS3=]'s Cell architecture, and was the first game on that system to use a dual layer Blu-ray disc. All of this resulted in ''Metal Gear Solid 4'' being one of the hardest games to port, which is why it never showed up on the UsefulNotes/Xbox360 and why it hasn't received an aforementioned standalone re-release.

* CreatorChosenCasting: It's said that Hideo Kojima specifically chose Creator/ChikaoOhtsuka to voice [[spoiler:Big Boss in hopes that it could help him and Akio, who were estranged at the time, reconcile. ''And it worked''.]]

* RealLifeRelative: [[spoiler:In the ending of the game, Solid Snake meets Big Boss once more. In the Japanese version, both characters are played by the father/son duo of [[Creator/AkioOhtsuka Akio]] and Creator/ChikaoOhtsuka. As the story goes, both men had actually been estranged from each other prior to their casting, which was intentional on Kojima's part to see if reconciliation could be possible, and it did happen.]]

* CreatorChosenCasting: It's said that Hideo Kojima specifically chose Creator/ChikaoOhtsuka to voice [[spoiler: Big Boss in hopes that it could help him and Akio, who were estranged at the time, reconcile. ''And it worked.'']]

* DyeingForYourArt: Creator/DavidHayter's voice for Old Snake featured age-based vocal decay, taking the GutturalGrowler trope up to eleven. It apparently gave him trouble doing Naked Snake's voice again in ''VideoGame/MetalGearSolidPeaceWalker''.

* KeepCirculatingTheTapes: The game has yet to see a standalone re-release for newer systems. The only way to play it now is on the original hardware or streaming via [=PlayStation=] Now. Thankfully, physical copies are still relatively easy to obtain, usually going for around 30 dollars on eBay.

* NoPortForYou: One of the more infamous examples; ''Metal Gear Solid 4'' made heavy use of the UsefulNotes/PlayStation3's Cell architecture, and was the first game on that system to use a dual layer Blu-ray disc. All of this resulted in ''Metal Gear Solid 4'' being one of the hardest games to port, which is why it never showed up on the UsefulNotes/Xbox360 and why it hasn't been ported to UsefulNotes/TheEighthGenerationOfConsoleVideoGames.
* PosthumousCredit: Creator/KojiTotani's voice is reused via archive audio from Revolver Ocelot's previous appearances. He died in 2007.
* RealLifeRelative: [[spoiler:In the ending of the game, Solid Snake meets Big Boss once more. In the Japanese version, both characters are played by the father/son duo of [[Creator/AkioOhtsuka Akio]] and Creator/ChikaoOhtsuka. As the story goes, both men had actually been estranged from each other prior to their casting, which was intentional on Kojima's part to see if reconciliation could be possible, and it did happen!]]

* YouSoundFamiliar: Creator/JenniferHale voices both Naomi Hunter and Little John in this game, and previously played Emma Emmerich in ''VideoGame/MetalGearSolid2''.

* KeepCirculatingTheTapes: As of 2021, the game has yet to see a standalone re-release for newer systems. The only way to play it now is on the original hardware or streaming via [=PlayStation=] Now. Thankfully, physical copies are still relatively easy to obtain, usually going for around 30 dollars on eBay.

* ExecutiveMeddling: Snake's nanomachine injections were supposed to be something that the player themselves were going to have to take of, with the syringe as an in-game item to administer at certain points to keep Snake active. Sony and various ratings boards objected to the very specific use of "performance-enhancing injections" as an item, so they were downgraded to just a plot device that's handled automatically in cutscenes.

* DyeingForYourArt: Creator/DavidHayter's voice for Old Snake featured age-based vocal decay, taking the GutturalGrowler trope UpToEleven. It apparently gave him trouble doing Naked Snake's voice again in ''VideoGame/MetalGearSolidPeaceWalker''.

** Concept art of the Beauty and the Beast Unit had them looking more like the Mastiff enemy in ''VideoGame/MetalGearRisingRevengeance''.

* FanNickname:
** "''Movie Gear Solid''", for its ''high'' StoryToGameplayRatio.

* CreatorBacklash: Creator/DavidHayter felt that [[https://kotaku.com/david-hayter-begged-konami-to-change-mgs4-stuff-5022391 Snake hesitating to commit suicide was out-of-character.]] Hayter believed that after all of the people Snake had killed, he wouldn't hesitate to kill himself if he felt that was the only way to save the world.