Teenage Wasteland

"All the greatest wishes are granted, let us sing, let innocence reign

All the prayers are finally answered, blessed and free of all pain

Towers of fire rise ever higher, magical flags will be unfurled

The power of song, the young are the strong

The night that children rule the world"

- "When Children Rule the World", traditional Christmas carol

Somehow, the social order has gone all topsy-turvy. Instead of the old having power over the young, the young are free to do as they will, and may even have power over the old. This is pretty much inevitably portrayed as a bad thing, regardless of the state of the world today with the old having power (which of course is exactly the way it was when those who are now old were young). The young in question might attempt to build some sort of new society, or they might degenerate into complete barbarism, or there might be a conflict between the former and the latter. The most famous example is Lord of the Flies, but it's not too uncommon, since it's a useful device to explain why teenagers are going on whirlwind adventures. Teenage Wasteland settings tend to be rather dark, since they often involve children and teenagers fighting for their lives, and quite possibly doing horrible things to each other. Children Are Innocent has no place in a Teenage Wasteland -- not all Teens Are Monsters, but in a Teenage Wasteland, you're likely to find at least some that are. In extreme cases, The Apunkalypse may be nigh if the youths run amok or the youths are the only ones left After the End.

There are a few ways this might come to be:
 * 1) A group of teenagers are lost, stranded, or otherwise isolated from society (e.g. Lord of the Flies).
 * 2) Adults simply do not exist any more. They are gone, either because the children have instigated a teenage revolution and killed all the adults (e.g. Children of the Corn), or because of something that was Only Fatal to Adults (Shade's Children).
 * 3) A society where the old nominally still hold power, but groups of youths have become too powerful to be truly controlled. (e.g. A Clockwork Orange).
 * 4) A society where the young and the old coexist, but the young call the shots (e.g. Logan's Run).

This is not to be confused with There Are No Adults, though types 1 and 2 probably overlap with that. Also not A Child Shall Lead Them, in which only one youngster has authority.

Similar to Promotion to Parent, but on a society-wide scale. Something that is Only Fatal to Adults will pretty much always lead to a type 2 Teenage Wasteland. A type 3 or 4 at a High School might take the form of an Absurdly Powerful Student Council.

Contrast Childless Dystopia.

Not to be confused with Refrain From Assuming, about songs with titles that are different from the refrain. For once, the correct name isn't "Baba O'Riley".

Anime and Manga

 * Infinite Ryvius is pure Type 1, being basically Lord of the Flies in Space!

Comic Books

 * The notoriously violent British comic of The Seventies, Action featured a violent Type 2 (with a few remaining adults, mostly unlovable fascists) entitled Kids Rule O.K.

Film

 * The 1972 cult film Gas-s-s-s, an industrial accident releases a poison gas that kills everyone on earth over the age of 25. In the rest of the film, the main characters have to learn to survive on their own.
 * Subverted in Sleepaway Camp 3: Teenage Wasteland
 * The 1968 film Wild In The Streets, which produced the Breakaway Pop Hit "The Shape of Things To Come", revolves around a 16-year-old pop singer being elected President via The Power of Rock, and bringing about a type 4 by forcing anyone over 35 into re-education camps and dosing them on LSD.
 * Class of 1984 plays like a Type 3; the sequel, Class Of 1999 moreso.
 * In Mad Max: Beyond Thunderdome, Max discovers a fertile valley where the children of plane crash survivors have been left alone while the adults went to find help. It being After the End, there was no help to be had, and the kids wound up having to raise themselves.
 * In Children of the Corn, a group of children slaughter all the adults in their town and proceed to establish a primitive tribal society which functions at the behest of a strange god called "He who walks behind the rows".
 * The Warriors is arguably a type 3 setting, where the street gangs of New York (mostly teenagers and perhaps 20-somethings) openly rampage through the streets, even during the police's attempts at a crackdown. Cyrus, the "President" of the Gramercy Riffs, the largest and most powerful of these gangs, was attempting to unite the various gang factions.

Literature

 * Any example of this trope will always, always be compared to Lord of the Flies, which unless someone can find an older example is probably the Trope Maker. Type 1.
 * Peter Pan, and all derivatives (such as Hook)
 * The teen gangs in A Clockwork Orange can't be controlled by the adults, so they're a type 3.
 * The original Logan's Run is about a cross between a type 2 and type 4, where everyone is killed when they reach 21. The film version raises the age to 30, which doesn't fit this quite as well.
 * In Gone, everyone over the age of 15 disappears in an instant, leading to a type 2.
 * Diario de la Guerra del Cerdo (it was translated as "Diary of the War of the Pig"), a 1969 novel by Argentinean writer and Cervantes Prize winner Adolfo Bioy Casares. A dystopic world where old people is deemed as "useless pigs", any kind of healthcare or benefits has been removed by the government and youngster's mobs are given tacit right to kill them in the streets, forcing them to hide and live a miserable existence in the underworld. Thus, type 3; though the approach to this subject is both grim and comedic at the same time.
 * There was a short-lived YA Novel series called 2011 where this scenario happens in a type 3 situation.
 * The titular Shade's Children are almost a type 2 except for Shade himself, and he's... well, unusual. All other adults have disappeared. Shade treats the children in his care like soldiers, but they all trust him because he's older than them. In a world where most people don't survive beyond the age of 14, it is shown that people generally sort themselves into a hierarchy based on age, with the main character practically falling down to worship Shade when he first sees him.
 * The kids in Battle Royale are type 1-ish, but they don't have much civilization to speak of.
 * In Larry Niven's "A World Out Of Time", most of the Earth was ruled by immortal boy-children who kept a supply of grown-ups around as breeding stock (The immortal girl-children were wiped out by a gender war and environmental changes making their territory uninhabitable). All new boy-children are taken from the adults and join troupes of the immortal boys; the ones that demonstrate "superior qualities" are sent back to the adults to become new breeding adults, while the rest become immortal and stay boys forever. Girls remain with the adults and grow into new breeding adults.

Both the boys and girls are depicted as cruel despots, but not because of their "youth"; most were far older than the adults and had the mentalities to match. They're cruel because they're powerful, ancient immortals, and cruelty is how they alleviate their boredom.
 * Just about anything by Bret Easton Ellis before American Psycho
 * In the second novel in the His Dark Materials series, Lyra visits a world where a lot of the adults have been killed off by Specters, monsters that can only harm and be seen by those who have reached puberty. Much of the world is covered in abandoned cities left to gangs of spectre-orphans (until they grow up and get spectre-eaten themselves) while caravans with adults try to keep ahead of the spectres.
 * The Girl Who Owned a Cityis a Type 2
 * 400 Boys
 * Countdown
 * The Vigils are type 3 in The Chocolate War.
 * The Outsiders borders on a type 3.
 * Evil by Swede Jan Guilliou is set in a 1950s boy's boarding school in which the boys are given to govern themselves in their lives outside the classroom - at one point does the principal step in to stop the beating of the main character during lunch, but only because splatters of blood land in his food. So, type 4.
 * A E van Vogt's Children Of Tomorrow is a type 4: so many men have gone to war that there aren't enough left on Earth to enforce the law, and the children are organized into "outfits" with police powers.
 * Robert Heinlein's Tunnel In The Sky is a type 1, but it works out because they were being taught survival techniques anyway.
 * Charlie Higson's 'The Enemy', in which fourteen years ago, all people were infected with a disease which took this long to develop. Only people born since then remained. The adults either died or went mad and became cannibalistic zombies.
 * Type 1 happens to the nation-state of Canyonar in Waking Echoes by Donaya Haymond, as a result of The Virus that is Only Fatal To Adults and Prepubescent Children. A few of the teens strive for order and peace, but because the place was already a Crapsack World before the Famine Fever hit, most of the kids either become cannibalistic looters or join a Fascist-style army with the aim of conquering the currently unaffected neighboring countries.
 * This apparently happened in the backstory of Timothy Zahn's A Coming of Age, which takes place on a colony planet where some unknown environmental factor gives preadolescent children powerful telekinetic abilities. This led to an extremely destructive period known as the Lost Generation; by the time of the novel adults have reasserted control, but only by isolating the kids and strictly limiting their access to information.

Live Action TV

 * There was an early episode of Sliders where Howard Stern had been elected president and lowered the voting age to nine. The young were in power, the mandatory retirement age was in the mid-20's, and everyone over 30 was a second-class citizen. Adults were more or less homeless and drug use was rampant among the youngsters due to the pressures of having to succeed so early.
 * The Tribe. An After the End world where The Virus is Only Fatal to Adults.
 * The New Tomorrow, set some unspecified (but presumably quite long) period of time later, wherein the tribes are now settled in to their new world and, for the most part, more peaceful or at least more spread out. Except there are still no adults alive (surely the child survivors from The Tribe should've grown up and had kids and they too would....well, there should be * some* adults somewhere...)
 * The Star Trek episode "Miri" featured a planet where a virus had killed off all the adults, leaving the children to look after themselves.
 * Star Trek: Enterprise had an episode dealing with the aftermath of a combination of Type 1 and Type 2; unusually, this took place some time after the kids had grown up, and they eventually they had to be left where they were because reintegration would have been nigh-impossible.
 * Jeremiah takes place fifteen years after an Only Fatal to Adults plague.
 * The Canadian series The Odyssey.
 * Twenty Thirty CE, another Canadian Series
 * One chapter from Stargate Atlantis featured a tribe of kids from age 25 and down. After they reached 25 they committed suicide, but only because they had to keep the population small due to being kept safe by a shield that was slowly becoming smaller. But they didn't know that...
 * The Farscape episode "Taking The Stone'' had a slightly similar premise, with the members of a hedonistic tribe suffering from cumulative radiation poisoning in their early twenties. Most of them "Take The Stone" at around twenty-two years of age, or else join the outcast "Lost People" wandering the abandoned catacombs for the rest of their lives.
 * Non-teenager example from Green Wing: When the girls in the office realise that the HR manager isn't coming back, it takes them roughly 10 minutes to devolve into a savage tribe. Human sacrifices and all.
 * Isaac Asimov's Probe: "Quit It" had a group of teenagers who had discovered a form of mind control that only affected people who had exited puberty. They nearly ran their entire neighborhood into the ground, ordering their parents to have constant block parties, buy boats and expensive cars, etc.
 * Of course we can't have a trope without an example from Buffy. Band Candy has Ethan Rayne magically infuse chocolate to turn adults into teenagers. The results include Snyder out partying, Giles reverting to a teen rebel and Joyce macking him, all so the Big Bad can allow babies to be sacrificed to a demon.
 * One of the first episodes of Andromeda had an old High Guard supply station inhabited by the descendants of the original staff, who all died in their twenties or sooner due to radiation poisoning or raids by Magog and Nietzscheans. They were also religious fanatics who worshiped the High Guard and considered a cabinet full of schematics (that they couldn't read) sacred scripture. And when Dylan accidentally unlocked the Nova Bombs they attempted to send suicide Slipfighters to nearby systems.

Real Life

 * An interesting case was that of China when the Communists first took over. For a society that had always relied on an extremely rigid age-based hierarchy, suddenly teenage and young adult members of the Communist Party were given life-or-death power over their elder family and community members. Some of them went a little drunk with power for a while.
 * Curiously, many of those who were members of the original revolution as well as the Cultural Revolution are now leading the Chinese government. Considering that they seem obsessed with keeping things orderly, one wonders if it is a case of a Full-Circle Revolution or a result of lessons learned from an anarchic period. YMMV of course.
 * Parts of the UK for complex reasons. If you take high youth unemployment, a society that runs on rampant consumerism and then an unarmed man is shot by police you have a recipe for social disorder. At first it was supposed to be a protest against the shooting and then it became a case of want, take, have.
 * Type 3 during the 2011 England riots entire city centre's became teenage wastelands of looting and ultraviolence for about 4 nights. Not all of them were teenagers but many were under 25, including one 11 year girl arrested for looting.
 * Given the demographics of prehistoric times, it wasn't unusual for a Neolithic community -- especially a newly-established one, or one recently struck by contagion -- to consist almost entirely of young adults and small children.
 * The Internet. Enough said.

Tabletop Games

 * Indie tabletop RPG Misspent Youth is all about this, with the PCs being children aged 12 to 17 fighting against the Authority (whatever form it takes for your game). Adults either blithely let the Authority do what it wants, or are on its side. The game actually mentions several of the above examples as inspiration.
 * In Bliss Stage, alien invaders triggered the Bliss, an condition that's Only Fatal to Adults - and continues to be so: Turning 18 is a death sentence.
 * This is the entire point of the RPG Kidworld.
 * The domain of Odaire became a Teenage Wasteland when the evil puppet Maligno killed all the adults in the city, forcing the older children to fend for themselves and their young siblings. Subverted in that their society is actually quite functional and civil, and because they've grown up by the time of the Arthaus 3E products.
 * The desert domain of Sebua is home to a colony of feral children who don't grow any older, and who live like wild animals.
 * In the Fighting Fantasy gamebook Starship Traveller, the player can encounter a planet where the kids are in charge because the alien race suffers from extremely rapid and severe senility and dementia as soon as they reach adulthood.

Theater

 * The play Rabbit is set in a Type 2 scenario where all the 'olduns' have presumably perished.

Video Games

 * The first level of the PC game Sanitarium has a town whose inhabitants are creepy deformed children controlled by an evil being which they refer to as "Mother," who killed all the adults in the town after seeing how cruelly they treated the children.
 * The game Rule of Rose features a society run by little girls.
 * MMORPGs often have stable group structures, such as guilds in World of Warcraft. Groups with (male) teen leaders and predominantly teen populations become Teenage Wastelands for their members. Whole games may become this, too.
 * Fallout 3's Little Lamplight is a cross between a type 1 and 2. Of course on becoming adults, they're shipped off to "Big Town".
 * Fallout's spiritual predecessor, Wasteland has Camp Highpool.

Web Original

 * Survival of the Fittest, being inspired by Battle Royale, is all over this trope.
 * Lost Boys of the Cascades is a web-original story about children struggling to survive after a pandemic destroyed the world's adult population.

Web Comics

 * In Homestuck on the planet Alternia, all the adults of the troll species are shipped off to help with the imperial conquest of the galaxy, leaving only the young trolls on the planet to maintain the culture.
 * Actually they were shipped off because otherwise they could (and, for a couple of times, did) cause a rebellion on the planet, and the Condesce felt safer in conquering the galaxy because of this decentralization.
 * Elves in Tales of the Questor die young, as a result of the loss of a priceless artifact that compensated for a poorly-formulated wish. This induced the complete collapse of their civilization.
 * Aurora Danse Macabre is a mix of type 1 and type 3, Vermin children are socially isolated and the few adults they interact with are content to leave them to their own devices.

Western Animation

 * Parodied in the South Park episode "The Wacky Molestation Adventure", when the kids cause all of the adults in town to be taken away by social services by claiming they were molested. A couple then comes to the town and finds it in ruins and overrun by children. By this time they've split into factions, developed communities and created bizarre religions. Later we find out that it's only been four days since the parents were arrested.
 * Jimmy Neutron - when the adults have been abducted by aliens in the movie.
 * The Codename: Kids Next Door Mirror Universe, before the intervention of the heroes.
 * One of these is encountered by Fry and his ex-girlfriend in an episode of Futurama when they believe they're stuck in an After the End scenario. Later on they learn that LA in the future is just a hellhole...or more of one, anyway.
 * An episode of Martin Mystery had a town were adults were sent to the Cyberspace.
 * Happens to the children of Springfield in The Simpsons episode "Das Bus", which was a parody of Lord of the Flies.
 * In The Fairly Odd Parents hour long musical special School's Out!, Timmy wishes that kids ruled the world, and is elected President. As usual, this starts out really cool but culminates with dystopian catastrophe.