Barbarianna: It's The Viking Age.
Stories often add elements to two or more time periods, be it through the appearance of Renaissance dress with 12th-century crusaders in a story set in Charlemagne's empire, Imperial Roman troops having guns or cavemen fighting Dinosaurs to survive. This is not only a modern trope. Medieval artists, for example, routinely dressed Biblical figures in contemporary fashions, and the Greek myth of Theseus features similar confusion. Some critics think the very first writer to actually try to reconstruct past times as different from the current era was Sir Walter Scott.
The more academically approved name for this sort of thing is uchronia, a variation on Utopia, which means "not-place", "Uchronia" means "not-time", suggesting it takes place in no real time.
This can also be done deliberately. A work might combine large numbers of anachronisms to create a timeless or surreal setting, where the exact era of the story (or the era the fictional world is supposed to be imitating) is both ambiguous and irrelevant, allowing the work's creators to freely introduce further anachronisms whenever doing so would make for a good plot or a good joke.
Sometimes, this can become so culturally embedded that it actually becomes difficult to tell a story accurately without confusing the audience. This is particularly true with peoples and settings that had already been stewing for centuries, such as Vikings or the Aurthurian legend.
This is a Super-Trope to a number of more-particular variations:
- Alternate History: Speculative fiction where the entire central idea is an anachronistic departure from our main timeline.
- Ambiguous Time Period: The work is set in no particular time period, so everything clashes intentionally.
- Anachronistic Animal: The work features animals that weren't known to humans in its time setting.
- Anachronistic Orphanage: A traditional orphanage in a first-world setting.
- Anachronistic Soundtrack: Modern day music in a Period Piece, or vice versa.
- Awesome Anachronistic Apparel: Important characters wear fashions way out of date in the setting.
- Cosmetically-Advanced Prequel: A chronologically earlier installment features more advanced technology because it was made later.
- Egypt Is Still Ancient: Egypt is the same in modern times as it was thousands of years ago.
- Fantasy Counterpart Appliance: For putting certain anachronisms in fictional settings that primarily resemble certain time periods, but aren't meant to fully represent said time period accurately.
- Font Anachronism: When creators use fonts in their works that weren't even invented yet.
- Future Imperfect: When fictional historians from the future can't get their history straight.
- The Genie Knows Jack Nicholson: Anachronistic cultural references from a supernatural character.
- Hollywood Prehistory: This trope on the grandest scale.
- Low Culture, High Tech: Low tech culture using far advanced technologies it doesn't understand.
- Period Piece, Modern Language: When the modern language is completely at odds with the posh-seeming historical fiction production.
- Purely Aesthetic Era: When the blatant anachronisms are the joke. (There are other contexts Purely Aesthetic Era shows up in, but the most common is comedies using Schizo Tech (or other blatant anachronisms) for a laugh.)
- Present-Day Past: Works set in the recent past that reference contemporary pop culture.
- Politically Correct History: Portraying society in the past as more tolerant than they actually were.
- Schizo Tech: The mix of technologies purposefully makes very little sense.
- Steam Never Dies: The predominant use of steam power in a setting where it would otherwise be considered obsolete.
- Weird Historical War: When real historical wars' depiction in stories use advanced technology that comes much later than it should.
Compare Artistic License – History, where the historical inaccuracy is the result of fictionalization, not a combination of actual historical details from different eras.
Please note that this is not a place to pothole any anachronism you find in a work. Those examples belong on the Trivia subpage of that work. This Trope is about the setting/environment of the work, and as such, requires multiple anachronisms affecting how the viewer of the work sees the setting.
- Anime & Manga
- Comic Books
- Fan Works
- Live-Action TV
- Tabletop Games
- Video Games
- Visual Novels
- Web Original
- Western Animation
- The "Marine" scene from The Apotheosis of Washington has the Roman goddess Venus emerging from the ocean as she did in the time of ancient Greece so she can complete her godly duties... to wire transatlantic telegram cables. Behind her and Neptune's mighty horsemen, you can see a smoke-stacked industrial factory.
- The School of Athens depicts an adult Aristotle in the same building as Socrates, who was executed 15 years before Aristotle was born. Then there's the Creator Cameo from Raphael himself and the Muslim philosopher Averroes, none of which had access to enough Time Travel to make it to the school on time.
- Much religious art from The Renaissance on. This had a solid Real World justification, though. Religious paintings, especially on the walls of churches were designed for the masses, and the goal was not to depict a scene exactly as it was, but to tell the story for everyone to understand. Through the use of contemporary clothing, armor, and styles, even the common people could instantly recognize "that's a soldier, that's a fisherman, that's a shepherd, that's a tax collector, that's a nobleman, that's a commoner" etc. instead of "WTF are those people in those silly clothes?"
- This got completely out of hand by the 18th and 19th centuries, when both Pontius Pilate and Herod were depicted in extravagant Persian-type robes.
- Historians can and do judge when forks reached different parts of Europe by looking for them in paintings of the Last Supper. Judging military equipment is a little trickier, as you can never quite predict when someone's depicting the cutting edge and when he's depicting a suitably "old-fashioned" type of armor, but that tends to be well-attested elsewhere.
- This astronaut on a cathedral built in 1102 is another example.
- An entire style of painting, the classical landscape, was dedicated to this. It incorporated classical, medieval, and contemporary architecture while showing biblical or historical characters.
- The Pleasant Goat and Big Big Wolf series is supposed to take place in 3513, but the season Around the World in 20 Days has the goats visit the 2010 Shanghai World Expo.
- The Big Finish Doctor Who audio drama Invaders from Mars actually has some deliberate anachronisms, such as a character saying there was 49 states in 1938, when there was only 48, and someone repeatedly referencing the CIA when it wouldn't be founded until nine years later. This was due to the influence of "anti-time". Other mistakes, however, were less deliberate, like Orson Welles' The War of the Worlds broadcast being on October 31 instead of October 30.
- In Scary Gary, it's not clear how technology progressed over the years, but Gary has home video recordings of himself as a five year old kid in 14th century Romania. There weren't any iPhones at that time though.
Beatrice: What did you have?
- Medieval Madness plays the absurdity of medieval pinball for laughs throughout the game.
Rioting Peasant: "They've taken our pinball machines!"
- Inadvertently invoked by Eight Ball Champ, which mixes an Edwardian Era theme with computerized sound effects and a Machine Monotone voice.
- The Castle: Is nominally set in the Middle Ages but deliberately invokes this trope, with characters, headlines and events being obvious references to the present day, for example the aggressive chef Sir Gordon De Ramsay and the Italian knight Antonio Soprano. Sometimes they don't bother to hide it at all and reference the figure or event directly. In additional, all of the music is modern pop music performed on lutes, recorders and other contemporary instruments.
- Dead Ringers: One sketch has the cast of Downton Abbey pouring scorn on The Crown for its historical inaccuracies. But before Lord Downton can take his Tesla to London to complain at the House of Lords, he's informed he has to stay and entertain the Beatles, who are jamming in the living room with Oasis.
- My Story Animated: Amara from "After 30 Years I Am Still 16" fell into a coma in 1990 at the latest, but at one point in the pre-coma part of her story, she's shown using a 21st-century smartphone.
- OverSimplified: Played for Laughs.
- For example, a 2019 French Yellow Vest protester is seen among the Yellow Turbans during China's Three Kingdoms period.
- King Louis giving Porsches to his nobles. They ask if they can have Lamborghinis next year.
- Alois Hitler (Adolf Hitler's dad) makes a cameo in the Three Kingdoms era (way before he was born) to spank an eunuch. (This happens at around 6:14, if you're wondering.)
- In the first American Civil War video, George Washington shows up in a meeting held by Abraham Lincoln to discuss his strategy and claim he's the best president of the US. In the second American Civil War video, the Confedarates are seen with a BTS-themed calendar, and Wilmer McLean's wife Martha is seen using a vacuum cleaner.
- Young Henry VIII's toys included Power Ranger and Ninja Turtle action figures, a Game Boy, and an Etch-a-Sketch.
- The Russian Tsars have late 20th-century rocket launchers with which to dispose of annoying ministers, and Emperor Meiji has a Gundam. Later, when Stalin and his gang launch his "quiet" heist, they're all armed with Cold War-era AKs and grenades in late 19th/early 20th century Russia.
- When talking about how Napoleon married the Duke of Austria's daughter to try and get a male heir, Henry VIII can be seen wiggling his eyebrows outside Napoleon's window as the narrator quips "At least he didn't behead anyone".