History Main / AllOfTimeAtOnce

[[folder:Western Animation]]
* At the end of ''WesternAnimation/MrPeabodyAndSherman'', the title characters have to fix a rift in the space-time continuum that is dropping historical figures and artifacts into the present day before it ends up at this.
[[/folder]]

[[folder: Toys]]

* ''Series/StarTrekVoyager'': In [[Recap/StarTrekVoyagerS4E17TheKillingGame "The Killing Game"]], the Hirogen have captured the ship, but instead of killing the crew, they discover the Holodeck technology. They used it to replay all the violent events in the recorded history of the Starfleet database; the crew had their memories altered so they actually thought they were holodeck characters. The Hirogen hunt them, send them to sickbay, and then return them to the simulations (the security protocols were disabled on purpose). The aliens also force Kim, the only crewmember with his memory intact, to keep adding holodeck projectors all across the ship. And then, all hell breaks loose when Seven of Nine and Janeway get their real minds restored, and the holodeck limits are broken: ''The Killing Game pt. 2'' has Nazis and allies from World War II (some of the crew members with their minds still clouded, others mere NPCs) fighting all across the futuristic Voyager ship, that they consider a Nazi stronghold.

* Averted in ''VideoGame/ChronoTrigger'', where passing through a Time Gate with more than three people automatically sends them to the End of Time, a place where, well, time has ended.

* ''Series/DoctorWho'': In [[Recap/DoctorWhoS32E13TheWeddingOfRiverSong "The Wedding of River Song"]], the Doctor attempts to meet his apparent death at the hands of the Silence. River Song, whom the Silence had programmed to kill the Doctor, refuses, and they end up in an alternate timeline where all of time is running simultaneously and beginning to disintegrate. These include details like dinosaurs, Creator/CharlesDickens on a talk show and UsefulNotes/WinstonChurchill as Holy Roman Emperor who mentions UsefulNotes/{{Cleopatra}} and downloads.
* ''Series/LegendsOfTomorrow'': In "[[Recap/LegendsOfTomorrowS2E17Aruba Aruba]]" (season 2 finale spoilers), the Waverider crew have to steal a few things from their recent-past selves, all in 1916, because their actions have put them into a reality they didn't mean to create. They try to not bump into the versions of themselves, even though theoretically even meeting other members of the crew would affect... one of their realities. It's unsuccessful, and they have to explain why they'd break the first rule of time travel. Climax comes and all of the Future!Legends die by Bad Future!Reverse Flashes to help the versions of themselves in the reality they haven't screwed up yet escape and prevent the BadFuture. Of course, they now exist and not-exist at the same time from different realities in the same time and space. You can understand how the Present!Legends end up crashing through the time stream into a 2017 with dinosaurs.
* ''Series/StarTrekVoyager'': In [[Recap/StarTrekVoyagerS4E17TheKillingGame "The Killing Game"]], the Hirogen invaded the ship, but instead of killing the crew, they discovered the Holodeck technology. They used it to replay all the violent events in the recorded history of the Starfleet database; the crew had their memories altered so they actually thought they were holodeck characters. The Hirogen hurt them, send them to sickbay, and then return them to the simulations (the security protocols were disabled on purpose). And Kim kept adding holodeck projectors all across the ship, at the Hirogens' request. And then, all hell breaks loose when Seven of Nine and Janeway get their real minds restored, and the holodeck limits are broken: ''The Killing Game pt. 2'' has Nazis and allies from World War II (some of the crew members with their minds still clouded, others mere NPC) fighting all across the futuristic Voyager ship, that they consider a Nazi stronghold.

* During Creator/BrianMichaelBendis's run on ''Franchise/TheAvengers'', he had Franchise/IronMan propose the theory that time is alive in a sense and occurs simultaneously in a nonlinear matter. Then a conflict between Kang and Ultron in a possible future started colliding various time periods and timelines together. Bendis would continue this idea in ''ComicBook/AgeOfUltron'', where the idea is presented again by a Tony in a BadFuture who suggests that time travel damages time and enough paradoxes can kill it.

* In ''Franchise/{{BIONICLE}}, this is what is said to happen if the [[MaskOfPower Kanohi Vahi]], Mask of Time, is shattered. [[TheHero Vakama]] gets an epic StaringDownCthulhu moment when he gets BigBad Makuta Teridax to back down and agree to his terms, otherwise he would be willing to cause this to stop Teridax from creating and ruling over a CrapsackWorld.

* ''ComicBook/CrisisOnInfiniteEarths'': During the chaos made in the {{Multiverse}} there are multiple different Earths fighting to not disappear at the hands of Anti-Monitor. In Earth-1, time is also collapsing, prompting different time periods to happen at the same time but also, it seems, different continuities of different times as there are multiple unthinkable alliances. This is how there are heroes from the present fighting alongside the post-apocalyptic WildMan ComicBook/{{Kamandi}}, the WildWest AntiHero ComicBook/JonahHex and the WWII ComicBook/SgtRock against the Anti-Monitor's Shadow Demons.

* ''Series/DoctorWho'': In [[Recap/DoctorWhoS32E13TheWeddingOfRiverSong "The Wedding of River Song"]], the Doctor attempts to meet his apparent death at the hands of the Silence. River Song, whom the Silence had programmed to kill the Doctor, refuses, and they end up in an alternate timeline where all of time is running simultaneously and beginning to disintegrate. These include details like dinosaurs, Charles Dickens on a talk show and Winston Churchill as Holy Roman Emperor who mentions Cleopatra and downloads.

* ''Fanfic/ChildOfTheStorm'' has this happen at the end of Book 1, during the climax of the Battle of London, owing to the emergence of Chthon: reality's falling apart, including the distinctions between past and present. Unusually, even after the problem is resolved, side-effects linger, including pre-Industrial levels of forest cover and more than a few examples of Ice Age era wildlife.

Of course, this happening can also create problems when your main get-out clause is time travel. It may have got you into this mess, but it probably can't help get you out, as either the accepted timeline that you've been galavanting through is in another reality and/or your time machine can't break out of the "now". You're going to have to find a way to reverse what you did to cause it, usually revolving around [[NeverTheSelvesShallMeet people meeting that never should]], oddly enough, or a [[SpaceBattle massive frickin' space war]]. There may also be a timer set as to how long you have to fix time before it completely implodes and, well, not to worry about because then nothing will have ever existed.

Welcome to your favourite SciFi show, where the intrepid adventurers are about to explore the Beyond yet again. In this episode, though, the plot isn't exactly saving the day. It's more like saving ''all the days''. We open with a sweeping establishing shot of the Pyramids of Southbank, dinosaurs ridden by Chairman Mao and Marie Antoinette stalking past. Something, [[HandWave perhaps never explained]], has caused all moments in time to be perpetually present — [[TimeAndRelativeDimensionsInSpace and somehow all contain the same space, too]]. Alternatively, your adventurers' journey through the plot is what triggers a TimeCrash that results in some kind of chronological collapse. This version is more likely to keep your historical figures and landmarks separate, but even then time isn't going to move, and you're going to be trapped in the entire Universe condensed into a split second.

* During Creator/BrianMichaelBendis's run on ''Franchise/TheAvengers'', he had Franchise/IronMan propose the theory that time is alive in a sense and occurs simultaneously in a nonlinear matter. Then a conflict between Kang and Ultron in a possible future started colliding various time periods and timelines together. Bendis would continue this idea in ''ComicBook/AgeOfUltron, where the idea is presented again by a Tony in a BadFuture who suggests that time travel damages time and enough paradoxes can kill it.

* During Bendis' run on the Avengers he had Iron Man propose the theory that time is alive in a sense and occurs simultaneously in a nonlinear matter. Then a conflict between Kang and Ultron in a possible future started colliding various time periods and timelines together. Bendis would continue this idea in Age of Ultron, where the idea is presented again by a Tony in a Bad Future who suggests that time travel damages time and enough paradoxes can kill it.

* The setting of ''VideoGame/AValleyWithoutWind'' is the result of a TimeCrash of unknown origins; the vast majority of people did not survive, and those who did find themselves in a [[DeathWorld hellish]] PatchworkMap of time periods, most of them haunted with a wind that flays the very soul from the body.

Welcome to your favourite SciFi show, where the intrepid adventurers are about to explore the Beyond yet again. In this episode, though, the plot isn't exactly saving the day. It's more like saving ''all the days''. We open with a sweeping establishing shot of the Pyramids of Southbank, dinosaurs ridden by Chairman Mao and Marie Antoinette stalking past. Something, [[HandWave perhaps never explained]], has caused all moments in time to be perpetually present -- [[TimeAndRelativeDimensionsInSpace and somehow all contain the same space, too]]. Alternatively, your adventurers' journey through the plot is what triggers a TimeCrash that results in some kind of chronological collapse. This version is more likely to keep your historical figures and landmarks separate, but even then time isn't going to move, and you're going to be trapped in the entire Universe condensed into a split second.

See also: TimeStandsStill, when everything effectively freezes in place but for a select few -- usually the heroes -- time keeps moving. If you're one of the people who appear to have frozen, it may well be that you experience all of time at once: it may be explained as a massive effect version of localized time dilation in which you are experiencing time at a natural pace, but it's [[YearInsideHourOutside comparatively so slowly that you appear frozen]], whilst you can see non-frozen peoples' entire lifespans pass in a second. PlaceBeyondTime, for somewhere that exists outside temporal reality, so it's effectively experiencing none of time at once and may have a viewing platform so you can look at all of time at once.

* ''Series/DoctorWho'': In "[[Recap/DoctorWhoS32E13TheWeddingOfRiverSong The Wedding of River Song]]", the Doctor attempts to escape his apparent death at the hands of the Silence. River Song, whom the Silence had programmed to kill the Doctor, refuses, and they end up in an alternative timeline where all of time is running simultaneously and beginning to disintegrate. These include details like dinosaurs, Charles Dickens on a talk show and Winston Churchill as Holy Roman Emperor who mentions Cleopatra and downloads.
* ''Series/LegendsOfTomorrow'': (Season 2 finale spoilers) In "[[Recap/LegendsOfTomorrowS2E17Aruba Aruba]]", the Waverider crew have to steal a few things from their recent-past selves, all in 1916, because their actions have put them into a reality they didn't mean to create. They try to not bump into the versions of themselves, even though theoretically even meeting other members of the crew would affect... one of their realities. It's unsuccessful, and they have to explain why they'd break the first rule of time travel. Climax comes and all of the Future!Legends die by Bad Future!Reverse Flashes to help the versions of themselves in the reality they haven't screwed up yet escape and prevent the BadFuture. Of course, they now exist and not-exist at the same time from different realities in the same time and space. You can understand how the Present!Legends end up crashing through the time stream into a 2017 with dinosaurs.
* ''Series/StarTrekVoyager'': In ''Recap/StarTrekVoyagerS4E17TheKillingGame'' the Hirogen invaded the ship, but instead of killing the crew, they discovered the Holodeck technology. They used it to replay all the violent events in the recorded history of the Starfleet database; the crew had their memories altered so they actually thought they were holodeck characters. The Hirogen hurt them, send them to sickbay, and then return them to the simulations (the security protocols were disabled on purpose). And Kim kept adding holodeck projectors all across the ship, at the Hirogens' request. And then, all hell breaks loose when Seven of Nine and Janeway get their real minds restored, and the holodeck limits are broken: ''The Killing Game pt. 2'' has Nazis and allies from World War II (some of the crew members with their minds still clouded, others mere NPC) fighting all across the futuristic Voyager ship, that they consider a Nazi stronghold.

* ''Series/DoctorWho'': In "[[Recap/DoctorWhoS32E13TheWeddingOfRiverSong The Wedding of River Song]]", the Doctor attempts to escape his apparent death at the hands of the Silence. River Song, whom the Silence had programmed to kill the Doctor, refuses, and they end up in an alternative timeline where all of time is running simultaneously and beginning to disintegrate.

* ''Literature/{{Discworld}}'': Ankh-Morpork seems to exist in a range of time periods ranging from the medieval (in the early books as a parody of MedievalEuropeanFantasy) to the Victorian (Unseen University working along college rules, the semaphores standing in for the telegraph). The fact that they exist simultaneously (for example, [[Creator/WilliamShakespeare a groundbreaking theater called the Dysk]] and a huge opera house existing in the same lifetime) is explained by the History Monks doing their best to fix history every time there's a TimeCrash.

* ''Series/StarTrekVoyager'': In ''The killing game pt. 1'' the Hirogen invaded the ship, but instead of killing the crew, they discovered the Holodeck technology. They used it to replay all the violent events in the recorded history at the starfleet database; the crew had their memories altered so they actually thought they were holodeck characters. The Hirogen hurt them, send them to sickbay, and then return them to the simulations (the security protocols were disabled on purpose. And Kim kept adding holodeck projectors all across the ship, at the Hirogen request. And then, all hell breaks loose when 7 of Nine and Janeway get their real minds restored, and the holodeck limits are broken: ''The Killing Game pt. 2'' has nazis and allies from World War II (some of the crew members with their minds still clouded, others mere NPC) fighting all across the futuristic Voyager ship, that they consider a nazi stronghold.

Welcome to your favourite SciFi show, where the intrepid adventurers are about to explore the Beyond yet again. In this episode, though, the plot isn't exactly saving the day. It's more like saving ''all the days''. We open with a sweeping establishing shot of the Pyramids of Southbank, dinosaurs ridden by Emperor Mao and Marie Antoinette stalking past. Something, [[HandWave perhaps never explained]], has caused all moments in time to be perpetually present -- [[TimeAndRelativeDimensionsInSpace and somehow all contain the same space, too]]. Alternatively, your adventurers' journey through the plot is what triggers a TimeCrash that results in some kind of chronological collapse. This version is more likely to keep your historical figures and landmarks separate, but even then time isn't going to move, and you're going to be trapped in the entire Universe condensed into a split second.

!!Examples

* ''ComicBook/CrisisOnInfiniteEarths'': During the chaos made in the {{Multiverse}} there are multiple different Earths fighting to not dissapear at the hands of Anti-Monitor. In Earth-1, time is also collapsing, prompting different time periods to happen at the same time but also, it seems, different continuities of different times as there are multiple unthinkable alliances. This is how there are heroes from the present fighting alongside the post-apocalyptic WildMan ComicBook/{{Kamandi}}, the WildWest AntiHero ComicBook/JonahHex and the WWII Comicbook/SgtRock against the Anti-Monitor's Shadow Demons.

[[folder:Fan Fiction]]

* ''Series/LegendsOfTomorrow'': (Season 2 finale spoilers) In "[[Recap/LegendsOfTomorrowS2E17Aruba Aruba]]", the Waverider crew have to steal a few things from their recent-past selves, all in 1916, because their actions have put them into a reality they didn't mean to create. They try to not bump into the versions of themselves, even though theoretically even meeting other members of the crew would affect ... one of their realities. It's unsuccessful, and they have to explain why they'd break the first rule of time travel. Climax comes and all of the Future!Legends die by Bad Future!Reverse Flashes to help the versions of themselves in the reality they haven't screwed up yet escape and prevent the BadFuture. Of course, they now exist and not-exist at the same time from different realities in the same time and space. You can understand how the Present!Legends end up crashing through the time stream into a 2017 with dinosaurs.

* There is the often considered theory that all of a person's life as they view it is actually in a zoom of memories they experience as that part of the brain shuts down during death, making all of time that they knew taking up a nanosecond of "real time". (Interestingly it incorporates the phenomena of deja vu and deja vacu, which in this theory are suggested as people remembering things out of order.)

* ''Literature/{{Discworld}}'': Ankh-Morpork seems to exist in a range of time periods ranging from the medieval (in the early books as a parody of MedievalEuropeanFantasy) to the Victorian (Unseen University working along college rules, the semaphores standing in for the telegraph). The fact that they exist simultaneously (for example, [[WilliamShakespeare a groundbreaking theater called the Dysk]] and a huge opera house existing in the same lifetime) is explained by the History Monks doing their best to fix history every time there's a TimeCrash.

[[folder:Live Action TV]]