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[[quoteright:270:[[ComicBook/MiniMarvels http://static.tvtropes.org/pmwiki/pub/images/Crisis_Crossover_Mini_Marvels_9032.jpg]]]]
[[caption-width-right:270: The ''Mini Marvels'' [[LampshadeHanging sum it]] [[DiscussedTrope up]].]]
A company-wide MassiveMultiplayerCrossover which sweeps all the "mainstream" characters in a {{ficton}} into a single storyline and, often, takes their own series along for the ride.

The original was ''CrisisOnInfiniteEarths,'' the event which changed TheDCU so much that its history is permanently defined as "PreCrisis" and "PostCrisis". It went from April 1985 to March 1986, tying in almost every other series DC published at the time.

After this, it became more and more popular, with not just Marvel and DC but other companies -- Malibu, Wildstorm, etc. -- getting into the act. Eventually, though, readers were sick of it, and it tapered off, before returning to the scene in 2004 when DC and Marvel both launched new Crisis Crossovers that started {{Metaplot}}s that are still running today. Time will tell how long it takes for readers to get sick of it ''this'' time (if they aren't already).

The advantage of a Crisis Crossover to a publisher is that people reading the main story will want to read the various crossovers, thus increasing sales. The disadvantage is that people who only want to read one of the titles that cross over may be turned off by having to buy all the tie-ins to understand it, thus decreasing sales. In practice, it can go either way, but there's a reason the technique was abandoned for awhile.

In comics, there are several subtypes:
* The classic is a single mini- or maxi-series, with other titles having a couple issues branded with the crossover's title. ''Crisis on Infinite Earths'' itself and ''Secret Wars II'' are of this type.
* A second kind is the all-annuals crossover. Many comic series have, in addition to their twelve monthly titles per year, a thirteenth plus-sized annual. An all-annuals crossover takes place entirely in one year's annuals (plus, perhaps, a special bookending issue or two). ''Armageddon 2001'' and ''Atlantis Attacks!'' are examples.
* {{Fifth Week Event}}s. Most comics come out monthly, most comics come out on Wednesday, and most months have four Wednesdays. Four times a year, however, there will be a month with a fifth Wednesday. Instead of moving titles around so that (for example) some comics that usually come out on the fourth Wednesday are pushed to the fifth, the publisher may just schedule an event for that week. Example: ''Sins of Youth''
* Self-contained: A crossover that doesn't crossover. The heroes take a break from their own books to participate in a mini-series, then return to their own books. Examples: ''Secret Wars'' and ''Cosmic Odyssey.''
* The opposite is the crossover without a self-titled mini-series; the whole crossover takes place in extant books. Marvel used to do this a lot, as with ''Inferno'' and ''ActsOfVengeance.''
* The current format is a expansion of the first type: There will be a core series, one or more spinoff series, probably some one-shots, and crossover into regular titles. ''BlackestNight,'' for example, had a core mini-series, seven multi-issue spinoffs, a slew of one-shots (nominally numbered as "new" issues of long-dead series), and heavy crossover into both ''GreenLantern'' titles, among others.

When a comic slaps a big, visible "Crisis Crossover" logo on the cover, but only has a token ShoutOut to the Big Event that only peripherally affects the plot of the issue in question, that's a RedSkiesCrossover. When a {{Crossover}} occurs that involves a couple of characters and their support, but doesn't necessarily affect the large universe, it's a BatFamilyCrossover. When the various sets of characters do not interact with each other but still deal with an universal threat, it's a CrossThrough.
----
!!Examples

[[foldercontrol]]

[[folder:DC Comics]]
* ''CrisisOnInfiniteEarths'', of course. Also the trope namer. Before [=CoIE=], there were [[AlternateUniverse two major and nearly a dozen minor separate DCU "Earths" (read: realities)]], each with its own continuity. They didn't cross over, except when they did (or when a DC writer forgot who was supposed to be on which Earth and a DC editor didn't catch the goof). Afterwards: one Earth, one reality, and the biggest {{retcon}}ning of past events ''ever''. Let one example serve for all: Pre-Crisis, there was Kara Zor-El, better known as {{Supergirl}}. During Crisis, she died. Post-Crisis, she had [[RetGone never existed]] due to the edict that, following the ''Man of Steel'' [[ContinuityReboot reboot]], Superman was to the only surviving Kryptonian (although she did appear in the final arc of Pater David's ''ComicBook/{{Supergirl}}'', "Many Happy Returns"). To this day, nobody (save for a few people, namely Donna Troy and The Spectre) remembers her as she was then, though a new version of the character returned in ''Batman/Superman: Supergirl'' in 2005. The first act of the "Multiverse Saga" dealing with the "Death of the Multiverse".
* A year after ''Comicbook/CrisisOnInfiniteEarths'', (1987) DC published ''[[ComicBook/LegendsDC Legends]]'', a crossover in which the evil god ComicBook/{{Darkseid}} tries to turn humanity against all its superheroes; it doesn't take. Looking back, ''Legends'' was most notable for launching the semi-humorous ''[[ComicBook/JusticeLeagueOfAmerica Justice League International]]'' (the one with Comicbook/BlueBeetle) and the perennially popular supervillains-doing-espionage title ''ComicBook/SuicideSquad'', as well as starting the career of third Comicbook/TheFlash, Wally West. It also marked the post-Crisis debuts of WonderWoman (after she was rebooted from scratch by George Perez and Greg Potter) and [[ComicBook/{{Shazam}} Captain Marvel.]]
* There were three in 1988!
** In ''Cosmic Odyssey'' (ironically the only one that was self-contained), Darkseid, the NewGods, and a group of super-heroes fight a giant shadow that Metron claims is the Anti-Life Equation's true form. Outside of [[GreenLantern John Stewart]] (no, not ''[[Series/TheDailyShow that]]'' one) acting like a rookie and causing an entire planet to explode due to his hubris, [[CanonDiscontinuity no one likes to talk about this story]] since making the Anti-Life Equation a giant shadow monster was a stupid idea.
** In ''Comicbook/{{Millennium}}'', the robotic Manhunters try to stop the Guardians of the Universe from giving a group of really bad ethnic stereotypes virtual Godhood; it doesn't work out. By contractual obligation, at least one secondary character from most of DC's titles turned out to be [[TheMole the Manhunters' moles]][[note]](In ''{{Superman}}'', basically all of Smallville but the Kents.)[[/note]], which was never mentioned again afterwords.
** In Comicbook/{{Invasion}}!, a whole mess of alien planets get together and try to take over Earth to keep all the superbeings we keep producing under control; yet again, it doesn't work out. This crossover also introduced the Metagene MetaOrigin concept in the DCU, as well as led to the launching of [[WestCoastTeam Justice League Europe]] and L.E.G.I.O.N., a 20th Century ''Comicbook/{{Legion of Super-Heroes}}'' spin-off title known mainly for having {{Lobo}} and Brainiac 2 on the roster.
* 1991's ''War of the Gods'' wasn't a bad idea in theory: All the different godly pantheons in TheDCU (the NewGods, plus the Olympians, the Asgardians, etc.) have at it and the various divinely-powered superheroes (Wonder Woman, Captain Marvel, etc.) get caught up in it. Unfortunately, writer George Perez made the mistake of double-booking himself drawing Marvel's ''InfinityGauntlet'' and writing/drawing ''War of the Gods'' at the same time, leading to ''War of the Gods'' suffering from bad writing.
* ''{{Armageddon 2001}}'': (Again in 1991!) One of DC's top super-heroes will become the uber-villain "Monarch"! Except the ending (it was CaptainAtom) gets leaked, meaning [[ShockingSwerve a third string character Hawk became Monarch instead]]. Monarch promptly disappeared until three years later, when he was retooled as Extant and became a flunky for A-List hero [[GreenLantern Hal Jordan]], who went evil in the wake of ''TheDeathOfSuperman''.
* 1992's ''Eclipso: The Darkness Within''. Over the summer, DC retconned a B-List villain from the '60s into a serious threat capable of possessing anyone -- up to and including Superman. Very little changes, other than the [[spoiler: HeroicSacrifice of Starman IV -- whose book had been canceled anyway (and it apparently [[BackFromTheDead didn't take]])]]. Eclipso himself got a series out of it for about two years, notable as one of the few mainstream comic series with a villain as its protagonist at the time.
* 1993's ''Bloodlines''. Whether you like this or not all depends on if you're a fan of the DarkAge. This was a CrossThrough of all of DC's Annual series for 1993. A race of [[Franchise/{{Alien}} Xenomorph-like]] parasites invade and start killing people by draining their spinal fluid. A small percentage of people, however, gained superpowers by this, leading to the creation of a new bunch of {{Nineties Anti Hero}}es. Nothing really changed and these new heroes were eventually reduced to [[CListFodder cannon fodder]] for InfiniteCrisis, or else ending up in ComicBookLimbo. The only notable result from this crossover being GarthEnnis' ''Comicbook/{{Hitman}}''.
* DC ended up pressing the reset button again ''ZeroHour: Crisis in Time'' in 1994. WellIntentionedExtremist Parallax (a.k.a. [[GreenLantern Hal Jordan]]) plans to destroy the entire DC Universe and remake it [[SetRightWhatOnceWentWrong in his image]]. Unlike ''CrisisOnInfiniteEarths'', ''Zero Hour'' ended up changing relatively little (aside from completely rebooting [[Comicbook/{{LegionOfSuper-Heroes}} The Legion Of Super-Heroes]] and making {{Hawkman}}'s continuity [[ContinuitySnarl even more confusing]]) and a massive bus being dropped onto the Justice Society of America. And unlike ''CrisisOnInfiniteEarths'', ''Zero Hour'' was met with mixed reviews.
* 1995's ''ComicBook/UnderworldUnleashed'' saw Mark Waid killing off 90% of Comicbook/TheFlash's rogue's gallery who he felt were too silly even for his masturbatory SilverAge tastes (though this didn't last long and Waid was proven wrong in a BIG way later on) and introducing Neron, the ''de facto'' Satan of the DC Universe proper. It also saw a ton of DC villains [[DealWithTheDevil selling their souls]] for grim and gritty revamps, of which only a small handful actually stuck.
** In the afterword to the collected edition, Waid claims that killing and resurrecting the Rogues was the plan all along in order to protect them from unnecessary DarkerAndEdgier revision:
---> Brian and I arranged for them to [[DeathIsCheap lie low in hell for a little while]], if only to keep some knuckleheaded creator from, oh, say, turning Heat Wave into a ''living pillar of fire''.
* ''FinalNight'' (Not to be confused with either ''ComicBook/FinalCrisis'' or ''ComicBook/BlackestNight''), from 1996, is probably the most fondly-remembered crossover from the 1990s, most likely because the whole thing became one huge AuthorsSavingThrow/Last Hurrah for Hal Jordan (writer Karl Kessel agreed to write the story for DC on the condition that he could give Hal a mercy killing/[[RedemptionEqualsDeath heroic sacrifice death]]). An alien weapon called a [[Comicbook/{{LegionOfSuper-Heroes}} Sun-Eater]] arrives in the solar system and, [[ExactlyWhatItSaysOnTheTin surprisingly enough]], [[PlanetEater eats the sun]]. After Earth's heroes try to keep their sunless world alive, [[GreenLantern Hal Jordan]] make a HeroicSacrifice to rekindle the sun and redeem himself (of course, RedemptionEqualsDeath). Also, the Post-Zero Hour Legion meets everyone in the DC Universe proper for the first time -- and before his death, Hal resurrects ComicBook/GreenArrow off-panel.
** Green Arrow's resurrection wasn't so much as off-panel as shoehorned in retroactively in-panel by Creator/KevinSmith about three years later. [[ComicBookTime Realtime]], of course.
* In ''Genesis'' (1997), John Byrne "kills off" Darkseid in a lame plot where the Source Wall breaks and everyone's powers start acting wonky. [[VillainDecay Nobody cares]]. Moving on...
* ''ComicBook/DCOneMillion'' (1998) All DCU books stopped and became " #1,000,000" as the JLA and the rest of the DC Universe go into the future to fight Solaris the Sentient Sun, who wants to kill his creator Superman. As Creator/GrantMorrison stories go, you'll either love it or hate it. This crossover is ''certainly'' part of the main DCU canon (Hourman One Million becomes a major player in JLA, JSA and his own book). (The final issue of Morrison's later ''ComicBook/AllStarSuperman'' features the present-day Solaris, and acts as a kind of origin story for the future society depicted in ''One Million'' -- or rather, presumably an alternative version of that future society, since ''All-Star Superman'' is definitely ''not'' part of the main DCU canon.)<br/>* 1999's ''Day of Judgment'' featured a then unknown GeoffJohns writing a story where the demons Neron and {{Etrigan}} steal the nigh-omnipotent powers of the Spectre. HilarityEnsues, and the ghost of Hal Jordan ends up becoming the new Spectre. Led to the creation of the Sentinels of Magic - a group of DC's mystic heroes who then appeared absolutely nowhere.<br/>* In 2000, in an effort to promote ''ComicBook/YoungJustice'', DC produced "Sins of Youth," a special Crisis Crossover in which Young Justice, the JLA, the JSA, the Titans and as many others as the pencilers could cram into frame descended on the White House lawn for a rally, only to face the mother of all FountainOfYouth plots wherein nearly every character present was aged or de-aged. It only interrupted the monthly run of YJ and crossed over into Superboy, and was over within a month real-time, but the scale of the story and the villains' plot was worthy of this trope.<br/>* 2001 was the year of ''ComicBook/OurWorldsAtWar'' and ''ComicBook/JokersLastLaugh'', occurring back to back much to the disdain of comic fans. ''Our Worlds'' featured an OmnicidalManiac trying to destroy the universe via destroying Earth (with Brainiac-13 pulling up the rear to exploit the madness) and the entire universe teaming up in a galactic alliance to save the universe. Infamous for it's massive number of deaths (Guy Gardner, Martha and Johnathan Kent, Aquaman, Sam Lane, and Wonder Woman's mom Hippolyta), just about all of which were overturned, with Gardner and the Kents being upgraded to living within months of the storyline ending.<br/>* ''Joker's Last Laugh'' was yet another crossover in 2001 (almost literally starting after ''Our Worlds At War'' had ended). This story had Joker infect all of the DC Universe's villains with chemicals turning them into Joker-lite mass murderers, after Joker is [[InducedHypochondria falsely told he has terminal cancer]]. Two notable scenes are when Joker {{Lampshade}}s previous crises by desiring red skies for his plan, and Chuck Dixon spending the entire storyline effectively cursing out readers for asking why no one kills the Joker.<br/>* ''ComicBook/IdentityCrisis'', in 2004, was the first book to use "Crisis" in its title since ''Zero Hour''. It was a crossover, but not necessarily a ''crisis'' crossover -- in fact, it was a very low-key murder mystery far more concerned with buried secrets and the personal lives of heroes than with blowing stuff up -- but it did end up changing things, due to the nature of the secrets revealed rather than any cosmic shenanigans. It's also notable as it deretconed back into existence many PreCrisis story lines from the Silver and Bronze ages, but at the same time made them DarkerAndEdgier. It turned B-list Comicbook/TeenTitans Villain Dr. Light into a [[MemeticMolester rapist]]; [[RetCon revealing]] that his "bumbling" and "pathetic" status was the result of a magically induced lobotomy. The story was eventually revealed to be the first part of a trilogy to "explore the DC heroes" in which they were put up against "a very personal threat". Its repercussions were felt throughout Franchise/TheDCU (leading to mini-Crisis Crossovers such as ''[[ComicBook/SecretSix Villains United]]'' and the ''Day of Judgement'' sequel ''[[ComicBook/{{Shadowpact}} Day of Vengeance]]'') until they coalesced in:<br/>* ''ComicBook/InfiniteCrisis'', released in 2005-2006. Refugees from the original ''Crisis'', who had been watching the DCU since, had decided that the events of ''Identity Crisis'' and the things that followed were the last straw, and returned to the universe to "set things right". As their version of setting things right involved destroying reality and replacing it with a "better" one, the current inhabitants of the DCU were less than pleased with the plan. Fighting ensued, and in the end a "soft reset" occurred -- some things were changed but by and large, continuity remained the same (except for the Comicbook/{{Legion Of Super-Heroes}}, which received its second complete reboot) -- and the multiverse, gone since the PreCrisis days, returned. Served as the second act of the "Multiverse Trilogy" as the "rebuild of the Multiverse" and the second act of the "Exploration Trilogy" by "putting the greatest odds against the heroes". Was immediately followed by:<br/>* ''ComicBook/FiftyTwo'': Basically the final act of the storyline of ComicBook/IdentityCrisis and ComicBook/InfiniteCrisis (story-wise). Innovative for its use of real time continuity, tossing ComicBookTime out the window in favor of the ''Series/TwentyFour'' approach, published weekly, from May 2006 to May 2007, each issue represents a week of time in-universe, covering the "missing year" of the DCU, as after ComicBook/InfiniteCrisis, all books were jumped forward "One year later". Writen by a "dream team" of four writers (Creator/GeoffJohns, Creator/GregRucka, Creator/MarkWaid, and Creator/GrantMorrison each of whom contributed something to each issue.) it also followed the lives of minor characters of the DCU while the "Big Three" Batman, Superman, and Wonder Woman took the year off for various reasons, Widely considered to be one of the greatest story lines of the ModernAge. It also introduced the Modern Batwoman, and Renee Montoya as TheQuestion.<br/>* ''ComicBook/CountdownToFinalCrisis'' (2007-2008): Meant to act as a bridge between 52 and Final Crisis. It's remembered as "one of the worst comic storylines of all time" riddled with plotholes and bad art.<br/>* ''ComicBook/FinalCrisis'' (2008): Picking up at the end of the year-long weekly series ''Countdown to Final Crisis'' and a mounting sense of crossover fatigue among fans, it faced an uphill battle, but the strength of its writer and artist (Creator/GrantMorrison and J. G. Jones) saw it through to sales success. The newly reincarnated Darkseid [[RescuedFromTheScrappyHeap accomplishes his goal of ruling the human race]] as he unleashes the Anti-Life Equation on Earth, plunging Earth into a black hole that threatens to destroy the Multiverse. The heroes save all of existence, but at the high cost of several high profile casualties (including MartianManhunter and Franchise/{{Batman}}) and lots of dead civilians who died while Darkseid reigned. Served as the final acts of the "Multiverse Trilogy" ("the [[TitleDrop Final Crisis of the Multiverse]]") and the "Exploration Trilogy" ("the day that evil won").<br/>** ''Final Crisis'' itself is a ''huge'' crossover dealing with multiple stories. In addition to the event proper, there was ''Final Crisis: Rogues' Revenge'' where the Flash's RoguesGallery reject Libra's invitation to the new [[LegionOfDoom Secret Society]] and kill the murderous speedster Inertia just before the events of Final Crisis begins; ''Final Crisis: Revelations'' which takes place during Darkseid's siege of a controlled Earth as seen by the Spectre and the Question; and ''Final Crisis: Legion of Three Worlds'' (taking place after all the previously listed ) which has the titular [[Comicbook/{{LegionOfSuper-Heroes}} 3 Legions]] fighting against Superboy-Prime and a new Time Trapper and his army of villains before being revealed as an older version of Prime, which ultimately lead to Prime returning powerless to his reconstructed Earth (but having to face the sins of his actions while in the Multiverse).<br/>* 2009 brought us ''ComicBook/BlackestNight'', (following the events of the epic ''SinestroCorpsWar'' storyline that [[EnsembleDarkhorse proved to be infinitely more popular]] than the Countdown event that was happening at the same time.) the culmination of a prophecy first mentioned in an Creator/AlanMoore penned back-up strip in "Tales of the [[GreenLantern Green Lantern Corps]]" back during the 80s. The best way to describe it is as SpaceOpera [[XMeetsY meets]] ZombieApocalypse. As dead super heroes, super villains, and their families and friends are brought back to life by Nekron, the various color corps from Geoff Johns' run on GreenLantern must put aside their differences and fight to protect all life in the universe. While being heavily GreenLantern[=-centric=], it crosses over with the entire DCU. Most books had at least one issue involved with the event.<br/>** The whole thing was initially conceived as a BatFamilyCrossover in the GreenLantern books, along the lines of ''SinestroCorpsWar''. As mentioned, the absolute success of SCW has lead DC to expand it into a full blown crossover. Even a few canceled books were temporary brought "back to life" for one shot issues just to add to this event. It now seems hard to imagine the relatively simple origins of this event given the hugeness it eventually grew to.<br/>* ''ComicBook/BlackestNight'' was followed up with ''ComicBook/BrightestDay'', a year-long event dealing with the newly resurrected characters' attempts to rebuild their lives after being dead, and the quest for the newly created White Light Battery on Earth. In many ways it was more of a CrossThrough; the books involved shared a feeling of making a fresh start but each one mostly followed their own story that was only tangentially connected to the main series.<br/>* 2011's crossover is ''Comicbook/{{Flashpoint}},'' which is to TheFlash what ''ComicBook/BlackestNight'' was to GreenLantern. Barry Allen has woken up to find reality changed around him; now he needs to find out ''what the heck happened?'' His discovery of the truth behind the altered world quickly leads to [[ComicBook/{{New 52}} a line-wide reboot on a scale]] not seen since the original ''Crisis''.<br/>* 2013-2014 is marked by ''Comicbook/ForeverEvil''. Continuing off where ''ComicBook/TrinityWar'' left off, [[spoiler:the [[MirrorUniverse Crime Syndicate]] has arrived to the prime Earth and knocked the three Justice Leagues out cold in a bid to TakeOverTheWorld]]. [[EvilVersusEvil Not every supervillain is happy about this new development]], least of which is SelfDemonstrating/LexLuthor.<br/>* ''Worlds Collide'' was a major DC Comics / MilestoneComics crossover, which had to be handled carefully, since the DC characters were comics in the Milestone universe. It was a scintillating series in that the differences between similar characters such as {{Superman}} and ComicBook/{{Icon}} were examined. Perhaps the most entertaining was the relationship between Comicbook/{{Hardware}} and {{Steel}}, who had the same abilities and skills, but were on opposite sides of the SlidingScaleOfIdealismVersusCynicism. Since then, Milestone was folded into the DC universe, which seems even more poignant after the passing of DwayneMcDuffie.<br/>[[/folder]]<br/><br/>[[folder:Marvel Comics]]<br/>* ''ComicBook/ContestOfChampions'', the first crossover done as a MiniSeries.<br/>* ''ComicBook/SecretWars'' was essentially twelve issues of good guys and bad guys beating each other up in various and creative ways in order to promote a toy line, still, it was a blast. Sometimes you buy a comic to read good guys fighting bad guys. Relatively little impact on the larger Marvel Universe. A few things did change following it: <br/>** She-Hulk joined the ComicBook/FantasticFour. <br/>** The stage was set for Magneto to lead the ComicBook/XMen (reinforcing NotSoDifferent between him and Charles) in ''ComicBook/SecretWarsII''. <br/>** SpiderMan got a new costume.<br/>* The sequel, ''ComicBook/SecretWarsII'', was less successful. The Beyonder, the omnipotent being behind ''Secret Wars'', took on human form and wandered around doing stuff, with the heroes making mostly-futile attempts to interfere with him and Mephisto trying to kill him. Generally considered a failure, partially due to its inescapable nature, with nearly every comic Marvel published at the time tying in somehow, and partly because the concept of the Beyonder trying to get used to being a human led to lots of {{Narm}}. A good example of what not to do.<br/>* The 1986 storyline "MutantMassacre" involved the mass murder of the underground mutant community known as the Morlocks at the hands of the Marauders, a group of mercenaries loyal to Mr Sinister. This series mainly affected the X-books and their characters (at the time, ''Uncanny X-Men'', ''X-Factor'' and ''New Mutants'') but it also crossed over into ''Daredevil'', ''The Mighty Thor'' and, of all places, ''PowerPack''. It may well be the first crossover which required readers to get every book involved if they wanted to have the full story, a template which almost every crisis crossover has followed since.<br/>* Also worth mentioning are 1988's ''Atlantis Attacks,'' which made its way through Marvel's summer annuals for that year to celebrate the {{Sub-Mariner}}'s [[MilestoneCelebration 50th anniversary]], as heroes fought off an Atlantean invasion; ''Fall of the Mutants,'' earlier that year, which was mostly confined to the X-Books; ''Evolutionary War,'' in 1989, again running through the Marvel summer annuals and featuring the High Evolutionary; and other X-Book X-Overs like ''X-Cutioner's Song'' and ''X-Tinction Agenda,'' each of which made significant, if not always lasting, changes to the X-Status-Quo.<br/>* In 1989 came the ''Comicbook/{{Inferno}}'' crossover, in which demons from Limbo staged an invasion of New York City. The storyline was mainly an X-Book storyline, as ''Inferno'' resolved longstanding plotlines involving Jean Grey's [[CloningBlues doppleganger]] Madelyne Pryor, the Madelyne/Cyclops/Jean Grey love triangle, and Illyana Rasputin's ApocalypseMaiden, but the effects of the X-Over was felt in just about every Marvel book published at the time, leading to the introduction of a new Avengers roster, the Thing being restored to human form[[note]]this occurred post-Inferno, but was the result of the Human Torch going to his overpowered Nova Flame mode during Inferno and being unable to power down; when Ben was tossed into the machine being used to restore Johnny's normal state, Johnny emerged in full control of his flame, and Ben emerged a normal human[[/note]], and the Jason Macendale Hobgoblin becoming half-demon (after getting his ass kicked by Harry Osborn, while dressed as Green Goblin).<br/>* Late 1989 and Early 1990 brought the ''Acts of Vengeance''. Loki secretly organized a veritable army of supervillains in what was ultimately a poorly written plotline that suffered from a massive case of writer revolt. Most notable for the storylines that ignored the main plot, where: Spider-Man temporarily gets used to his new Captain Universe cosmic powers, the Fantastic Four testify before Congress against the proposed Super Power Registration Act, Psylocke becomes an ninja, and Magneto takes down the Red Skull in a CrowningMomentOfAwesome.<br/>* During 1991-1993, Marvel ran what has since become known as "The Infinity Trilogy"; three X-Overs written by Jim Starlin, involving Thanos, Adam Warlock, Magus, and the Infinity Gems.<br/>** The first installment, ''InfinityGauntlet'', did the idea of a crossover right; only a few books were part of the crossover and almost all of them were books with a good reason to be part of the crossover, mainly those that dealt with things of a magical or cosmic bent (ComicBook/DoctorStrange, ComicBook/{{Quasar}}, etc) that the main mini-series was about to begin with. There were only a few anomalies that didn't quite fit, like the Hulk or Cloak & Dagger. Unfortunately, the sequels InfinityWar and InfinityCrusade, roped-in practically every single other Marvel title whether it worked or not.<br/>* 1992 saw the Avengers crossover ''ComicBook/OperationGalacticStorm'', in which the team was drawn into an all-out war between the Kree and Shi'Ar galactic empires. It turns out the whole thing was engineered by the Kree Supreme Intelligence, who manipulated the Shi'Ar into detonating a [[NukeEm nega bomb]] to spur the stalled Kree evolutionary process, at the cost of billions of Kree lives. Led to a split in the Avengers' ranks when an Iron Man-led team killed the Supreme Intelligence in retaliation (though they only destroyed a shell), much to Captain America's dismay.<br/>* The ''ComicBook/AgeOfApocalypse'' crossover ran from 1995, halted the X-Men books for six months to tell the story of an AlternateUniverse where Legion accidentally kills Professor X before he could found the X-Men, leading to an apocalyptic world where Apocalypse rules everything and Magneto formed the X-Men instead.<br/>* ''ComicBook/TheCrossing'' ran through the Avengers books in 1995 as well. The premise was that Iron Man had been under the mental influence of Kang the Conqueror for years, and had now turned against the Avengers outright; the only way the Avengers could defeat him was to pluck a younger Tony Stark, untouched by Kang, from an alternate timeline, and in the end, "evil" Tony was killed off. This turn of events was [[DorkAge not well-received]], to say the least.<br/>* There's also the ''{{Onslaught}}'' saga in 1996, which was famously [[ExecutiveMeddling hijacked by editorial]] to set up Avengers and Fantastic Four's continuities being rebooted from scratch outside the Marvel Universe via ''HeroesReborn''. However, [[DorkAge this reboot was short-lived]], and the subsequent ''Heroes Return'' storyline not only brought everybody back, but [[ResetButton undid the damage done by]] ''[[DorkAge The Crossing]]''. Thank you, [[RealityWarper Franklin Richards]].<br/>* 2001 brought ''Maximum Security'', in which a whole mess of alien planets get together to keep all the superbeings we keep producing under control; however, instead of completely borrowing DC's plot for ''Invasion!'', they simply designate Earth as a penal colony, drop off the scum of the universe to keep the superheroes busy, and have a ship in orbit keep everyone from leaving. The plot sickens when Ego the Living Planet begins assimilating Earth as his new body. Yet again, it doesn't work out -- but the Kree are given a new VoluntaryShapeshifting gimmick... until the next CosmicRetcon.<br/>* The later 2000s brought a whole series of crossovers, collectively tearing down and then rebuilding the superhero community:<br/>** First the BatFamilyCrossover ''ComicBook/AvengersDisassembled'', where Comicbook/TheAvengers start getting attacked on all sides out of nowhere. It's eventually revealed that the assault came from the Scarlet Witch, whose powers had grown to RealityWarper levels and driven her mad. She's stopped and placed in the care of her family (Magneto and Quicksilver), but the losses are so great that the Avengers disband (though a new team forms shortly afterward after a mass supervillain breakout).<br/>** 2005 followed up with ''ComicBook/HouseOfM'', in which Quicksilver manipulates Scarlet Witch to create "a perfect world", which gets over-ridden by Magneto's concept of a "perfect world" being one ruled by mutants. After much fighting, Scarlet Witch comes to the decision that mutantkind still would create a world of violence and hate, and she promptly depowers 90% of the mutant community. At a stroke, mutant-kind is reduced from a population of millions with strong political and economic support to less than 200 frightened heroes on the verge of extinction.<br/>** ''Comicbook/CivilWar'', in 2006. The deaths of the New Warriors and the city of Stamford, Connecticut at the hands of Nitro leads to a backlash against all heroes and a political push to get heroes to register their secret identities with the US Government, via the Superhuman Registration Act. Iron Man and Mr. Fantastic decide to back the new law and lead the charge to do so, while Captain America leads the anti-registration side of the super-hero community, as he sees the whole Registration Act as a bad idea. Needless to say, it all ends in horror as Captain America is defeated, denounced as unpatriotic, and assassinated, and Iron Man being handed full-control over SHIELD.<br/>** This is followed by ''WorldWarHulk'', the follow-up to the ''Comicbook/IncredibleHulk'' storyline ''PlanetHulk'' where, days before ''Civil War'' happened, Iron Man and Mr. Fantastic shoot Hulk into outer space (because, frankly, the conflict was gonna have enough problems ''without'' having to deal with the Hulk). He ends up on a hellish gladiator planet, which soon explodes due to the ship Hulk was sent on blowing up. Needless to say, Hulk is pissed and fans get five issues of Hulk delivering karmic beatdowns towards Iron Man, Mr. Fantastic, and just about anyone else who gets in his way, as well as crossover issues in or with Comicbook/TheAvengers, Comicbook/GhostRider, [[LukeCageHeroForHire Heroes For Hire]], Comicbook/IronMan, AntMan, Comicbook/ThePunisher, and the ComicBook/XMen, not to mention a Prologue issue with a story that features the ComicBook/MiniMarvels filling in the background.<br/>** ''SecretInvasion'', 2008: After the ninja assassin Elektra is killed ([[DeathIsCheap again]]), the Avengers discover that it's actually an alien impostor ''pretending'' to be Elektra. Both characters and fans quickly started wondering who ''else'' could be a fake, fueled by WordOfGod explaining that the infiltration went back for years. On top of all the problems from the last few {{Crisis Crossover}}s (Captain America dead, the Avengers fractured and preoccupied with fighting each other rather than actual threats, and the X-Men have had their power drastically reduced), throw in the [[ParanoiaFuel paranoia]] of double agents and it sure would be trouble if the aliens decided to invade now that every force that could be expected to stand up to them has been crippled... Ultimately, while Earth wins, Iron Man is still blamed for [=FUBARing=] the superhuman response, S.H.I.E.L.D. is dissolved, and control of the rest is handed over to the media darling who killed the Skrull queen; the leader of the BoxedCrook team the {{Thunderbolts}}: Norman Osborn. That's right, the [[Comicbook/{{Spider-Man}} Green Goblin]] is head of the government's superheroes. Yikes.<br/>*** Humorously, WarrenEllis, the author of ''{{Nextwave}}'', predicted online almost a year before the Elektra/Skrull reveal that everything that had gone wrong in ''Civil War'' was the fault of "Anal Skrulls!", which has become a [[MemeticMutation catch phrase of sorts]] in certain 'net communities. He also joked that ''Nextwave'' was the only canonical book Marvel published, with all the other titles featuring the aforementioned anal Skrulls.<br/>** This led to a pseudo-example called ''ComicBook/DarkReign'', which details Osborns tenure as the leader of the DarkerAndEdgier [=SHIELD=] called [=HAMMER=], during which time he sets up and leads his own EvilCounterpart to ''ComicBook/TheAvengers'' (as well as the ComicBook/XMen and a couple of others), dressing up psychotic supervillains to disguise themselves as the heroes, whilst pursuing an agressive domestic and foreign policy and consolidating his power by allying with major players like Loki Namor, Emma Frost and DoctorDoom ([[MyFriendsAndZoidberg and the Hood]]), whilst once again starting to descend back into Goblin-related madness. WordOfGod is this was not an "event" like the previous examples but it did lead to many mini-crossovers as pretty much every Earth-bound hero found themselves in conflict with the maniac plus it ticks most of the boxes anyway (save that its longer), and its worth mentioning because the conclusion to it was...<br/>** And finally in 2010, we have ''Comicbook/{{Siege}}''. [[TheMightyThor Thor]] had previously moved Asgard to Earth, and Osborn and Loki aren't happy (Osborn because it's foreign territory on US soil, Loki because Asgard isn't in its own realm where it belongs). So Loki convinces Osborn it would be a ''wonderful'' idea to take his army and ''attack gods''. Naturally, Thor and everyone connected with the Avengers goes ''"OhNoYouDidnt!"'' and goes to kick his ass. But the real problem wound up being [[spoiler:the Sentry: immeasurably powerful, mentally unstable (to put it mildly), and Osborn's no longer holding his leash.]] In the end, Osborn is ousted and the resurrected Steve Rogers (no longer CaptainAmerica) takes his place, beginning "The Heroic Age" by ending Superhuman Registration, formally reuniting the fractured Avengers teams, and bringing the Big Three (himself, Thor, and Iron Man) together on the same side for the first time since before ''Avengers Disassembled''.<br/>* Alongside that grand arc, Marvel also released Crisis Crossovers for its cosmic properties (i.e. alien races and space-borne heroes who can't be expected to care about the political squabbles on Earth):<br/>** The first one came in 2006 during the ''Civil War'', titled ''ComicBook/{{Annihilation}}''. Annihilation featured Annihilus, ruler of the Negative Zone, making a grand and destructive invasion into the regular universe that left a great deal of heroes dead, utterly destroyed the Nova Corps, dealt a harsh blow to the Kree Empire, and utterly shattered the Skrull Empire, going so far as to destroy the Skrull homeworld. It took the power of Galactus himself, in an all-consuming rage, to end the threat.<br/>** ''Annihilation'' got a sequel in 2007 titled ''Annihilation: Conquest'', in which Ultron, leading a vast army of robot warriors, is taking advantage of the weakened and confused state of the Kree Empire to attempt to conquer it. He doesn't succeed, but he makes a very good try of it and drives the Kree further into isolation and general impotence.<br/>** While not directly related, this is now being followed in 2009 by ''ComicBook/WarOfKings''. Part-way spun out from ''Secret Invasion'', one of the people replaced by a Skrull was Black Bolt, leader of the Inhumans. In response, the Inhumans decide they can't live in hiding any more, so their giant city on the moon blasts off for outer space, and after picking off several leftover Skrulls they conquer the remains of the Kree Empire, who created them in the first place. This sets up a war between the Kree Empire and the Shi'ar Empire, itself now under the heel of the psychopathic ''ComicBook/XMen'' villain Vulcan, with the Nova Corps, the Starjammers and the Guardians of the Galaxy caught in the middle.<br/>** 2010 finishes with ''ComicBook/TheThanosImperative''. A superweapon detonated at the end of the war has opened a rift in space known as the Fault. On the other side is a parallel universe that has been taken over by {{Eldritch Abomination}}s (called the "Cancerverse", after how the monsters spread and corrupt). The heroes will have to join forces with Thanos, who had [[DeathSeeker been granted the death he wished]] in ''Annihilation'' and was resurrected against his will in order to fight a universe where life has won over death.<br/>* The big crossover of 2011 was ''Comicbook/FearItself''. While the world is in a state of underlying fear and paranoia (from events both in-universe and in the real world), the Red Skull (II, aka Sin, daughter of the original) frees a Norse god that scares even Odin called the Serpent. The Serpent then summons hammers that turn selected superhumans into his followers "the Worthy", causing the powder keg of fear to explode among the people.<br/>** Also, in 2011 has a smaller example in the form of ''ComicBook/SpiderIsland'' which saw everyone in New York receive spider powers. While this would normally be a BatFamilyCrossover or just a regular storyline in ''Amazing {{Spider-Man}}'', a multitude of tie in mini series and one shots focusing on everyone from the Avengers to the Kung Fu heroes as well as tie in issues running in the monthly titles of both ''Venom'' and ''TheIncredibleHercules''.<br/>* 2012 brings us ''ComicBook/AvengersVsXMen'', where the Phoenix Force is returning to Earth and has chosen Hope Summers as its new avatar, leading the two major {{Super Team}}s of the MarvelUniverse to clash over whether this will mean the resurgence of mutantkind (for the X-Men) or the destruction of humans and mutants alike (for the Avengers). Epic ConflictBall ensues. The series ended with Comicbook/{{Cyclops}}, Emma Frost, Magik and Colossus becoming fugitives, while Captain America formed the [[Comicbook/UncannyAvengers Avengers Unity Squad]] to keep something like ''AVX'' from ever happening again.<br/>* Marvel had two Crisis events 2013.<br/>** The first debuting in Spring of 2013 was ''Comicbook/AgeOfUltron'', bringing Ultron back, and the end of humanity with it. Interestingly, the storyline already starts off with Ultron succeeding in taking over, with the surviving heroes attempting to mount a resistance to stop the robotic villain's rule. Then it quickly turns into TimeyWimeyBall nuttiness, with no real impact on the other titles. Any tie-ins in other books were labeled "AU", and had no impact on their respective running storylines. The major impact came at the end of the story, with Angela from the ''Comicbook/{{Spawn}}'' universe entering the MarvelUniverse, and {{Galactus}} being teleported to the UltimateMarvel universe. <br/>** The second debuting at the end of Summer in 2013 is ''Comicbook/{{Infinity}}''. Building off a storyline from ''Comicbook/TheAvengers'' main book, it centers around heroes dealing with two major cosmic threats, one a new cosmic enemy called the Builders and the other ComicBook/{{Thanos}} leading a new invasion army, hitting the planet Earth at nearly the same time. Despite the name and use of Thanos, WordOfGod says that the event is not intended to be a sequel to the similarly named ''ComicBook/TheInfinityGauntlet'' and its sequels. <br/>* Marvel once again has two Events for 2014.<br/>** The first is ''ComicBook/OriginalSin'' by Jason Aaron and Mike Deodato Jr. It is a murder mystery about the killing of Uatu the Watcher and the heroes' buried secrets which he has personally witnessed but kept to himself being leaked out to the superhero community.<br/>** The second debuting in the fall is called ''AXIS'' by Rick Remender. Spinning out of the events of Comicbook/UncannyAvengers, the threat of the Red Skull takes on new heights as he, along with a number of other Marvel noteworthy villains, turning the lives of Comicbook/TheAvengers and the Comicbook/XMen upside down to stop the threat.<br/>* In the same vein, the ''VideoGame/MarvelUltimateAlliance'' video game has the heroes banding together to stop villains under Dr. Doom and Loki from pulling off an EvilPlan [[spoiler:that would allow Doom to steal the power of a god from Odin]]. The sequel is an adaptation of the ''Secret War'' and ''Civil War'', minus the second half of Civil War as the game diverges at the end of the third issue of that storyline for a different, original ending.<br/>* ComicBook/UltimateMarvel had one with ''ComicBook/{{Ultimatum}}'', meant to be the last title in the Ultimate Universe before it got relaunched as Ultimate Comics in 2009. The plot involves Magneto plotting revenge on the Ultimates for the murder of the Scarlet Witch, [[KillEmAll killing absolutely everybody in the process]].<br/>** In 2011, Ultimate Marvel had ''[[TonightSomeoneDies The Death of Spider-Man]]'' where, well, [[ExactlyWhatItSaysOnTheTin Spider-Man died]]. It ran through ''ComicBook/UltimateSpiderMan'' and ''[[ComicBook/TheUltimates Avengers vs. New Ultimates]]'', but is something of an odd case as thus far the series have only intersected once (Spidey got injured in an Avengers/Ultimates fight) and have since remained separate, but it serves as an explanation as to why Spider-Man has to fight the Sinister Six with no back-up beyond an ill-prepared Iceman & Human Torch. Nonetheless, it prompted a second linewide relaunch.<br/>** In 2012, Ultimate Marvel had ''Divided We Fall/United We Stand'' which involved all three ongoing titles at the time - Ultimate Comics Spider-Man, Ultimates and X-Men - dealing with a fractured United States. [[spoiler: It notably culminated with Captain America being voted in as President of the United States.]]<br/>** In 2013, the Ultimate line had ''[[Comicbook/CataclysmTheUltimatesLastStand Cataclysm: The Ultimates Last Stand]]'', which deals with the aftermath of ''Age Of Ultron'' and the Ultimate heroes banding together to fight off Galactus. <br/>[[/folder]]<br/><br/>[[folder:Other ComicBooks]]<br/>* Of bizarre note is the ComicBook/JLAAvengers crossover that happened around 2004ish. Although these cross-company crossovers usually end up either being non-canon or forgotten, this one actually led to some small changes: the universe of the Crime Syndicate of Amerika (an evil JLA) was rebooted as a result of the defeat of Krona (who had, destroyed that entire universe in the prologue). This led to vague (and therefore non-copyright breaking) references to the events of the crossover the next time that the JLA met the CSA. Some people also say that the events of ''House of M'' may also have stemmed from the events of ''JLA/Avengers'' as well, since the Scarlet Witch started to lose her sense of reality and judgment after tapping into the chaotic (read: evil) chaos magic of the DCU. This is just {{Fanon}}, but it's too cool a possibility not to mention.<br/>** Marvel has officially accepted JLA/Avengers as canon, since references to it are made in the Marvel Universe Handbooks, without actually naming the DC characters, of course.<br/>** The actual crossover itself was integrated fully (as in, no denying it anymore) into DC continuity with the release of ''Trinity'' #7, with the Avengers being referred to as the "Others"; you can even see what seems to be a silhouette of ComicBook/CaptainAmerica in one panel (though it's just as believable to think that was Comicbook/TheFlash - it's left rather vague).<br/>** And we're also forgetting Krona's fate at the end of the crossover, which stuck around for a while.<br/>* And as long as we're being complete, there was the ComicBook/AmalgamUniverse story, in which both the Marvel and the DC multiverses face annihilation -- and so the two multiverses were forcibly merged for a short time to keep their worlds alive. (Amalgam Dark Claw = DC Franchise/{{Batman}} + Marvel ComicBook/{{Wolverine}}; Amalgam Super Soldier = DC Franchise/{{Superman}} + Marvel ComicBook/CaptainAmerica; Amalgam Amazon = DC WonderWoman + Marvel ComicBook/{{Storm}}; Amalgam Lobo The Duck = DC Lobo + Marvel Comicbook/HowardTheDuck; Amalgam Captain Marvel = DC [[ComicBook/{{Shazam}} Captain Marvel]] + Marvel CaptainMarVell; et multiple cetera.)<br/>** The Amalgam Universe had its own crisis crossover: [[ComicBook/SecretWars Secret]] [[ComicBook/CrisisOnInfiniteEarths Crisis]] of the [[InfinityGauntlet Infinity]] [[ComicBook/ZeroHour Hour]].<br/>* Subversion: New England Comics ran a ''Crisis on Finite [[TheTick Tick]] Crossovers'', which featured all 3 titles in the [[TheTick Tickverse]]. The editors explained that having only 3 comics severely limited the number of money-making crossovers they could do.<br/>* Parodied in ''TopTen'', where a character has an Ultra-Mouse infestation in his mother's apartment. So, he hires the EX-VERMINATOR, who releases Atom Cats to deal with them, but with so many super-powered creatures in such a confined space, it turned into a "Whole Secret Crisis-War Crossover Thing" which eventually [[CosmicRetcon rewrote the time line]] so the Ultra-Mouse infestation never happened, and nobody even remembers it -- except the EX-VERMINATOR, [[ShaggyDogStory who is thus pissed nobody will pay him]].<br/>* Though ''ComicBook/AstroCity'' is the only series in its continuity and thus incapable of crossovers, they still managed to play with this one. In "The Nearness of You", a man becomes increasingly obsessed about a woman who keeps appearing in his dreams. It turns out it's because a minor villain caused a TemporalParadox that threatened the universe and required all of the heroes to stop it -- and the woman is his wife who [[RetGone ceased to exist]] in the repaired timestream. Yes, the CrisisCrossover is relegated to a ''background reference.''<br/>** Also appears in the ending of the "Confession" arc, which is basically a Crisis Crossover as seen from the sidelines.<br/>* ValiantComics had the "Unity" Crossover early in its history, in which the 41st century heros and the 20th century heros had to join come together to face a woman with the power to destroy all history.<br/>** They also did a crossover with ImageComics called ''DeathMate''.<br/>* ''When Bongos Collide'' was a crossover of Bongo Comics, which publish comics based on ''TheSimpsons''. It included ''Itchy & Scratchy'' #3, ''The Simpsons'' #5, and ''Bartman'' #3. It can be read in ''Bartman: The Best of the Best'' collection. Also, there were two series of ''Simpsons[=/=]WesternAnimation/{{Futurama}}'' crossover comics -- which reaffirm the MutuallyFictional nature of the two shows in the other's universe (though the crossovers take place in the ''Futurama'' universe, because it'd be easier to use its sci-fi nature to use the TrappedInTVLand and RefugeeFromTVLand plots to allow the meetings).<br/>* In 2008, the Franchise/StarWarsExpandedUniverse got in on the act with ''Vector'', which told a single story starting in ''KnightsOfTheOldRepublic'', then moving in chronological order through Dark Horse's four ''StarWars'' titles, before ending in a WhamEpisode in ''StarWarsLegacy''. And it was really good, too.<br/>** ''Legacy'' also crossed the prequel era with Tatooine's Sand People and the NJO era.<br/>* The now-defunct EclipseComics got into the act with ''Total Eclipse'', written by Marv Wolfman. The story involved a villain named Zzed[sic], who was born many millenia ago during an event called the Total Eclipse (all the planets and moons of the Solar System aligned with thousands of planets, moons and stars across the galaxy). As a result, he has been [[WhoWantsToLiveForever cursed with immortality]], and seeks only his own death, which he can only achieve by destroying all creation. [[OmnicidalManiac He has no problem with that at first.]] Unique in being the only CrisisCrossover to feature appearances by Miracle Man, {{Airboy}}, Ms. Tree and Beanish of ''Tales of the Beanworld''.<br/>* The long awaited WarOfTheIndependents mini-series brings together creator-own characters as diverse as {{Gumby}}, TheTick, ScudTheDisposableAssassin, ComicBook/{{Cerebus}}, ComicBook/{{Shi}}, ComicBook/{{Bone}} and [[HackSlash Hack/Slash]]. Some of the same characters also appeared previously in the ComicBook/{{normalman}}/MegatonMan special, ComicBook/{{Gen 13}} ABC, and Shi / {{Cyblade}}: The Battle for Independents.<br/>* ''Image United'', a series which brings together not only {{Image}}'s iconic characters, but also their creators to personally draw them in each appearance.<br/>* Zenescope is currently in the middle of its first ever CrisisCrossover, ''The [[NamesToRunAwayFromReallyFast Dream Eater]] Saga''. A threat so major that even [[CardCarryingVillain Belinda]] and [[AxCrazy The Queen of Hearts]] are fighting against it.<br/>* Boom! Comics was losing the license to the DisneyAfternoon comics, so they went out with a bang. As such, ''WesternAnimation/DarkwingDuck'' and ''WesternAnimation/DuckTales'' are crossed over for the last arc of the respective series.<br/>* ''ComicBook/SonicTheHedgehogMegaManWorldsCollide'', a large 12-part {{crossover}} flowing through ArchieComics' three video game licenses: ''ComicBook/MegaMan'' #24-27[[note]]Parts 1, 4, 7 and 10[[/note]], ''[[ArchieComicsSonicTheHedgehog Sonic the Hedgehog]]'' #248-251[[note]]Parts 3, 6, 9 and 12[[/note]], and ''[[ArchieComicsSonicTheHedgehog Sonic Universe]]'' #51-54[[note]]Parts 2, 5, 8 and 11[[/note]]. The gist is that following the ''Sonic Genesis'' arc in the Archie Sonic comics, a Chaos Emerald has landed in the ''Mega Man'' universe, leading to a chance meeting between Doctor Wily and Doctor Eggman as they team up to cosmically conquer their universes. The ramifications are that [[spoiler:Mega Man hits the ResetButton on his universe, making the crossover never happen in the ''Mega Man'' universe to begin with, whereas Eggman inadvertently causes a {{cosmic retcon}}ning of Mobius on a scale the Archie Sonic comics have never faced before in its 20-year history.]]<br/>* ''ComicBook/TransformersMoreThanMeetsTheEye'' and ''ComicBook/TransformersRobotsInDisguise'' are crossing over in ''Dark Cybertron'', a multi-part storyline involving Shockwave launching his EvilPlan on Cybertron. The two series are set in the same universe and have intersected and referenced each other multiple times, but this will be the first real crossover between the two.<br/>* ComicBook/CartoonNetworkSuperSecretCrisisWar, an up coming 6-part Mini-Series by IDWPublishing crosses the main characters and villains of the shows ''Dexter's Laboratory'', ''Samurai Jack'', ''The Powerpuff Girls'', ''Ben 10'', and ''Ed Edd n Eddy''. The story also branchs off into 6 One-shots featuring ''Johnny Bravo'', ''Codename: Kids Next Door'', ''Cow and Chicken'', ''Foster's Home for Imaginary Friends'', and ''The Grim Adventures of Billy and Mandy''.<br/>[[/folder]]<br/><br/>[[folder:Anime]]<br/>* The ''PrettyCure'' MagicalGirl metaseries have their own Crisis Crossover movie series labeled "Pretty Cure All Stars", featuring heroines from all series released until then.<br/>* The 2nd part of the ''Anime/TimeBokan'' OVA in 1993 involves the Dorombo Gang from ''Anime/{{Yatterman}}'' invading a city populated by other Creator/TatsunokoProduction characters, and who should show to stop them but the Anime/ScienceNinjaTeamGatchaman, Casshern, Hurricane Polymar, and Tekkaman?<br/>* ''TsubasaReservoirChronicle'' features characters, SpinOffspring, {{Expy}}s, and/or cameos from more or less everything Creator/{{CLAMP}} has ever written.<br/>* The ''Majokko Club Yoningumi A-kūkan kara no Alien X'' OVA is a crossover between Creator/StudioPierrot's most successful MagicalGirl series. CreamyMami, [[MagicalStarMagicalEmi Magical Emi]], [[MagicalIdolPastelYumi Pastel Yumi]], and [[PersiaTheMagicFairy Persia]] all teamed up to fight alien forces on the moon.<br/>* ''Anime/DigimonXrosWarsTheYoungHuntersLeapingThroughTime'' has one in its final few episodes.<br/>[[/folder]]<br/><br/>[[folder:Fan Works]]<br/>* ''FanFic/Hottie3TheBestFanFicInTheWorld'' and it's sequel "Hottie 4: Even Better Sequel".<br/>* ''VideoGame/MushroomKingdomFusion'' takes over a dozen video game mascots and puts them all into a single game.<br/>* ''[[FanFic/SonicGenerationsFriendshipIsTimeless Sonic Generations: Friendship is Timeless]]'': Chapter 1 has the [[EldritchAbomination Time Eater]] attacking both [[VideoGame/SonicGenerations Sonic's world]] and [[WesternAnimation/MyLittlePonyFriendshipIsMagic Equestria]], sending the characters through different moments of Sonic's past. The ponies must now work together with Sonic's friends to save both of their worlds.<br/>* The ''FanFic/PonyPOVSeries'' plays with this -- all four generations of ''MyLittlePony'' existed in the same timeline at different points [[spoiler: (until the Alicorns and Draconequi [[CosmicRetcon erased]] G3 to prevent [[TheEndOfTheWorldAsWeKnowIt universal collapse]])]], but they never actually meet up. [[spoiler: Until the FinalBattle of the [[BadFuture Dark World]] timeline, when Twilight uses her connection with Minty Pie and the {{temporal paradox}}es created by [[BiggerBad Nightmare Eclipse]]'s GroundhogDayLoop plan to [[GondorCallsForAid summon]] the G1, G2, G3 and G4 (pre-Reign of Chaos) mane casts in order to use multiple sets of the Elements of Harmony to defeat Eclipse and her {{Psycho Ranger|s}} CoDragons.]]<br/>* In this fanfic [[http://www.fanfiction.net/s/7382184/1/Phineas-and-Ferb-Attack-from-other-Dimensions crossover]] sequel to ''Main/PhineasAndFerbTheMovieAcrossThe2ndDimension'' have the characters of Phineas and Ferb teaming up with characters from other franchises. such as ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', ''WesternAnimation/SpongeBobSquarePants'', ''VideoGames/SonicTheHedgehog'' ''TheVerse/MarvelUniverse'' and among others. for stop Dr. Heinz Doofenshmirtz, Plankton and villians from other universes from taking over the multiverse<br/>* This [[http://www.fanfiction.net/s/7878969/1/The-Transformers-Marvel-Continuty fanfic]] is a shared universe for the Transformers and Marvel characters. while no official crossover have been written, Crisis Crossover stories are set to be written for conclude the Second and Third Phases of this fanfic.<br/>* ''[[http://www.fimfiction.net/story/165235/multiversal-harmony Multiversal Harmony]]'' is a rather unique example. It's a MassiveMultiplayerCrossover of the universes of six different ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' {{Alternate Universe Fic}}s -- [[Fanfic/RainbowDoubleDashsLunaverse The Lunaverse]], [[Fanfic/RainboomsAndRoyalty The Dashverse]], [[Fanfic/TheElementsOfHarmonyAndTheSaviorOfWorlds The Hasbroverse]], [[Fanfic/LifeInManehattan The Manehattenverse]], Fanfic/TheCadanceverse, and [[Fanfic/BedHeadsFlipverse The Flipverse]] -- in which the different Elements of Harmony from those universes are brought together on an adventure together.<br/>[[/folder]]<br/><br/>[[folder:Film]]<br/>* [[SeltzerAndFriedberg Disaster Movie]] can be seen as this, with various movies crossing over as the end of the world occurs.<br/>** Can also be applied to ''ScaryMovie'' and its sequels.<br/>** It seems that [[CrisisCrossover mashup]] parody movies is becoming a genre on itself.<br/>* ''Film/TheAvengers'' movie in 2012 is a crisis crossover for all [[MarvelCinematicUniverse Marvel Studios movies]] starting with 2008's ''Film/IronMan''. However, this was the plan from the very start, as it was first set up in TheStinger of ''Iron Man'' and just building with each new film released in the next three years.<br/>* ''Franchise/{{Godzilla}}'' has had several:<br/>** ''Film/GhidorahTheThreeHeadedMonster'' is a somewhat smaller-scale version of this. Mothra had already crossed over into the Godzilla universe in ''Film/MothraVsGodzilla'' after having [[Film/{{Mothra}} its own earlier film]], but this one also adds Rodan, who had [[Film/{{Rodan}} its own separate film]], so that all three monsters could team up against King Ghidorah. This also started the tradition of eventually having all of Creator/{{Toho}}'s various {{Kaiju}} [[CanonWelding showing up in this fused universe]].<br/>** ''Film/DestroyAllMonsters'' once again had Godzilla, Mothra and Rodan, but also added other ''Godzilla'' monsters like [[Film/GodzillaRaidsAgain Anguirus]], [[Film/SonOfGodzilla Minilla and Kumonga]], along with other Creator/{{Toho}} monsters like [[Film/KingKongEscapes Gorosaurus]], [[Film/{{Atragon}} Manda]], [[Film/FrankensteinConquersTheWorld Baragon]] and [[Film/VaranTheUnbelievable Varan]], all ultimately fighting King Ghidorah.<br/>** ''Film/GodzillaFinalWars'' features almost every monster introduced in the Showa era facing off against Godzilla.<br/>[[/folder]]<br/><br/>[[folder:Literature]]<br/>* EugeneSue's 3rd major novel ''MysteriesOfAPeople'' in it's final chapter brings the Hero of [[MysteriesOfParis his First]] Rodolph into the story as well as the villain of [[TheWanderingJew his second]] (An Evil Jesuit) to do battle with each other.<br/>* A Creator/JaneAusten version happens in ''Literature/DeathComesToPemberley''. Wickham's situation ends up briefly binding Pride and Prejudice with Persuasion and Emma.<br/>* ''StarTrekDestiny'': An epic (and we do mean epic) trilogy of novels of the StarTrekExpandedUniverse, bringing together characters from ''[[Series/StarTrekTheNextGeneration The Next Generation]]'', ''Titan'', ''[[Series/StarTrekEnterprise Enterprise]]'', ''[[Series/StarTrekDeepSpaceNine Deep Space Nine]]'' and ''[[Series/StarTrekVoyager Voyager]]'' to tell the story of the apocalyptic final war between the Federation and the Borg.<br/>* The Literature/ThursdayNext series can be seen as a variant of this in later volumes, with literary characters such as Miss Havisham and the Cheshire Cat playing roles in the salvation of all written literature. It runs closer to a KingdomHearts-style crossover than a comic-style crossover, though.<br/>* The GrandFinale of ''Literature/WarriorCats'', ''The Last Hope'' is as close as you can get to a self-contained CrisisCrossover, with loads of screentime for all past and present protagonists, the final battles with all the past villains, and cameos by nearly every [=ThunderClan=] cat from the [[WarriorCatsTheOriginalSeries first arc]].<br/>[[/folder]]<br/><br/>[[folder:Live Action TV]]<br/>* ''Series/{{CSI}}'' has been known to cross storylines and characters between its various incarnations, as has the ''Franchise/LawAndOrder'' series. This most commonly takes place during sweeps.<br/>** There was in fact a ''Law & Order'' massive crossover in the works, involving a terrorist plot to attack NYC and several teams of detectives from different squads all working the case together. The idea got shelved after 9/11.<br/>* ''Series/DoctorWho'' had the two-part Series 4 finale crossing over with spinoffs ''Series/{{Torchwood}}'' and ''Series/TheSarahJaneAdventures'', and also brings in almost all of the Doctor's companions to appear in the revived series to date. (Although it should be noted that this did not have any on-screen content or long-term consequences in either of the spin-off shows.)<br/>** Jack [[WhatCouldHaveBeen would have appeared]] in "A Good Man Goes To War", if not for scheduling conflicts.<br/>** "Day of the Doctor" sees [[spoiler:All ''13'' Doctors (including a 'lost' incarnation and the 12th, yet to debut Doctor) come together to end the Time War and prevent the destruction of the Time Lords.]]<br/>* The 'Proof of Life' crossover between ''Series/TheBill'' and SOKO Leipzig.<br/>* Ten years of ''Franchise/KamenRider'''s Heisei era (and much later on, the franchise's 38 years up to that point) were [[MilestoneCelebration celebrated]] in ''Series/KamenRiderDecade'', where Decade (obviously the tenth) must travel across the ''Kamen Rider'' multiverse to save it from total destruction.<br/>** The two-part GrandFinale of ''Series/KamenRiderWizard'' features all fourteen Heisei era Riders up until that point (as well as an EarlyBirdCameo appearance from Series/KamenRiderGaim) teaming up to prevent a new villain from unleashing all of the franchise's past [[MonsterOfTheWeek Monsters of the Week]] upon the Earth.<br/>* The shows ''Series/LasVegas'' and ''Series/CrossingJordan'' would have charaters cross over at least once every season while both shows were on the air.<br/>* ''Franchise/SuperSentai''. In the seasonal crossovers, the series from ''Series/BakuryuuSentaiAbaranger'' to ''Series/EngineSentaiGoOnger'' are nominally connected by mentions of the Dino House where one character from series A met a character from series B.<br/>** ''Film/KamenRiderXSuperSentaiSuperheroTaisen'' is starting to look like this as well, with ''Decade'''s [[LegionOfDoom Dai-Shocker]] being ressurected, with their opposite number being the similarly-structured Dai-Zangyack Fleet [[spoiler:led by [=GokaiRed=] of the ''Gokaigers'']]. Both the Super Sentai 199 and the All Riders are at the very middle, wondering just what is going on.<br/>* A rather famous "Hurricane Saturday" event that happened on ''TheGoldenGirls'' and its spinoffs ''EmptyNest'' and ''Nurses'' (''Nurses'' was technically a spinoff of ''Empty Nest,'' but go with it.) A hurricane hit during ''TheGoldenGirls'' and ''EmptyNest'' and the hospital of ''Nurses'' dealt with the aftermath. A similar even happened with a full moon, but that better fit as a CrossThrough. <br/>[[/folder]]<br/><br/>[[folder:Mythology and Religion]]<br/>* OlderThanFeudalism: The GreekMythology knows at least two major crossover events: the Argonautica (the story of Jason, the Argonauts, and the Golden Fleece) and the Calydonian Boar Hunt a few years later. Large arc-based events like the Theban Wars and the Trojan War may also count.<br/>* The earliest stratum of [[KingArthur Arthurian legend]] drew folk heroes and gods from lots of disparate Celtic myths and legends to form [[BadassArmy King Arthur's court]].<br/>* [[NorseMythology The Ăsir-Vanir War]], where the two pantheons of Norse gods the Ăsir and Vanir ([[MassiveMultiplayerCrossover whom some suggest originated from two different religions that was merged]]) fight and [[CanonWelding ultimately becomes one tribe]], and [[{{Gotterdammerung}} Ragnar÷k]], where characters from all over Norse mythology meet up to [[KillEmAll kill each-other]].<br/>[[/folder]]<br/><br/>[[folder:Tabletop Games]]<br/>* ''TheAbyssalPlague'', an upcoming series of ''DungeonsAndDragons'' {{Tie In Novel}}s which starts out in the ''PointsOfLight'' setting but will involve other ''D&D'' worlds too, of which ''ForgottenRealms'' has already been confirmed.<br/>** The D&D settings {{Planescape}} and {{Spelljammer}} are made of this trope, explicitly designed to allow travel and storylines across D&D's other universes. While it was implied for years that all D&D games belonged to the same multiverse, these were two official company lines that supported it.<br/>* The ''TabletopGame/OldWorldOfDarkness'' had a few thematic ones toward the end of its line, but an official one with the Time of Judgment series of books, officially ending the old settings. And another, almost a decade later, in ''{{Exalted}} vs. the World of Darkness''.<br/>* {{Rifts}} is this to the Palladium systems of games. The setting is of Earth a couple hundred years in the future, after having been transformed into a multidimensional hub, with beings from all over time and space arriving, either by choice or forcibly.<br/>** More specifically, Palladium ran a series of {{Sourcebook}}s called "Minion Wars," detailing a conflict between two different versions of Hell that spilled out across the [[{{Multiverse}} Megaverse]]. Sourcebooks were written for several Palladium titles, describing how those specific settings were affected by the war.<br/>* [[RealityStorm Reality Storm: When Worlds Collide]], a crossover between {{Silver Age Sentinels}} and {{Champions}}.<br/>[[/folder]]<br/><br/>[[folder:Video Games]]<br/>* ''VideoGame/TheKingOfFighters'' series of fighting games is a Crisis Crossover for {{SNK}} Playmore, featuring characters from ''VideoGame/ArtOfFighting'', ''VideoGame/FatalFury'', ''VideoGame/IkariWarriors'' and ''VideoGame/PsychoSoldier'', as well as creating several characters exclusive to the series (Iori Yagami, Kyo Kusanagi, and SNKBoss Rugal Bernstein being the most notable).<br/>** The original plan for the overarching storyline was apparently to tie the entire series into the AfterTheEnd settings of of games like ''VideoGame/PsychoSoldier'', ''[[VideoGame/FatalFury Garou: Mark of the Wolves]]'', and ''[[FuunSeries Savage Reign]]'', but once the stories of the original characters began overshadowing those of the {{canon immigrant}}s, most of that was retconned.<br/>* The Subspace Emissary story mode in ''SuperSmashBrosBrawl''. It involves all of Nintendo's major heroes ([[GuestFighter and a couple of others]]) teaming up to stop the titular Subspace Emissary from destroying the ''Smash Bros.'' universe. However, unlike the typical Crisis Crossover, this explicitly takes place in an AlternateContinuity where the characters are all trophies that come to life and fight.<br/>* ''DissidiaFinalFantasy'' has the evil god Chaos revive villains from ''VideoGame/FinalFantasyI'' through ''VideoGame/FinalFantasyX'' in an attempt to sieze the Crystals and change history. Chaos' opposite number, the goddess Cosmos, calls on the heroes from the same games to unite and save the universe.<br/>* ''[[VideoGame/GundamVsSeries Gundam Vs. Gundam NEXT]]'' has the [[Anime/MobileFighterGGundam Devil Gundam]] come to life and take over arcade games representing the entire ''Franchise/{{Gundam}}'' franchise from [[Anime/MobileSuitGundam the original series]] through ''[[Anime/MobileSuitGundam00 Gundam 00]]'', forcing the characters to team up to deal with the threat.<br/>* This is arguably how ''VideoGame/SuperRobotWars'' works, except it's ''also'' a Crisis Crossover between entirely separate companies. A more conventional Crisis Crossover would be the case if GaoGaiGar and Betterman ever were in the same game, since they were in the same Universe to begin with.<br/>* ''[[Franchise/DotHack .hack//Link]]'' is going this way, as characters from both of the "revisions" of The World are in it. (Tokkio's first two party members are Tsukasa from SIGN and Haseo from G.U., for example.)<br/>* ''Franchise/KingdomHearts'' is a sort of variant in each game: while the main plots always menace the Disney multiverse, they are all left to the main casts as characters from individual worlds ''usually'' don't interact (this is due to Square's contract with Disney stipulating that crossovers between different Disney universes be limited; this was worked into the story with DonaldDuck telling Sora to [[{{Alien Non-Interference Clause}} not meddle with worlds' affairs]].) Meanwhile, the ''Franchise/FinalFantasy'' characters serve only as side stories and cameos. And as the series progresses, it becomes increasingly clear that ''Kingdom Hearts III'' will be one for the series as a whole.<br/>* The ''NicktoonsUnite'' series serve as this for {{Nickelodeon}}, with SpongebobSquarepants, WesternAnimation/DannyPhantom, JimmyNeutron and one or two other universes deal with a multiuniversal threat, differing each game.<br/>** As for Nick's rival Creator/CartoonNetwork, they have the MMORPG ''VideoGame/FusionFall'', though its art style makes it clear it is an AlternateUniverse.<br/>* Similiary to the ''Kamen Rider Decade'' example above, ASCII Media Works celebrated the 15th anniversary of their Dengeki Bunko imprint of LightNovels with the NintendoDS RPG ''Dengeki Gakuen RPG: Cross of Venus'', where an evil organization is attempting to derail the storylines of eight of their series and so your [[HelloInsertNameHere not-so-nameless]] protagonist and [[ShakuganNoShana Shana]] must form a rag-tag group with their worlds' heroines to save their printed existences.<br/>* Inverted in ''VideoGame/PokerNightAtTheInventory'', where Strong Bad, Max, The Heavy, and Tycho (from ''WebAnimation/HomestarRunner'', ''VideoGame/SamAndMaxFreelancePolice'', ''VideoGame/TeamFortress2'', and ''Webcomic/PennyArcade'' respectively) team up to [[ExactlyWhatItSaysOnTheTin play poker]]. The sequel has Brock Samson, [=CL4P-TR4P=], Ash Williams, Sam, and GlaDOS (from ''WesternAnimation/TheVentureBros'', ''VideoGame/{{Borderlands}}'', ''Franchise/EvilDead,'' ''VideoGame/SamAndMaxFreelancePolice'', and ''VideoGame/{{Portal}}'', respectively.)<br/>* The ''VideoGame/MarvelVsCapcom'' series is this for both Marvel and Capcom.<br/>** The original ''VideoGame/MarvelVsCapcomClashOfTheSuperheroes'' reused the plot of the ''Onslaught'' saga and adding in Capcom characters.<br/>** ''VideoGame/MarvelVsCapcom2'' has a more straightforward plot where Ruby Heart was gathering characters from both companies to deal with [[OmnicidalManiac Abyss]].<br/>** ''VideoGame/MarvelVsCapcom3'' has [[VideoGame/ResidentEvil Wesker]] and DoctorDoom team up, crossing over the Marvel and Capcom universes, and awakening {{Galactus}} in the process. <br/>* The {{Suikoden}} series is headed this direction nowadays, but with original characters in an attempted re-invention. SuikodenTierkreis introduced the multiverse concept and the next game is said to be focused around this.<br/>* ''VideoGame/ResidentEvil6'' is this for the ''Franchise/ResidentEvil'' franchise. Including [[VideoGame/ResidentEvil2 Leon]] [[VideoGame/ResidentEvil4 Kennedy]], [[VideoGame/ResidentEvil Chris]] [[VideoGame/ResidentEvilCodeVeronica Red]][[VideoGame/ResidentEvil5 field]], [[WildCard Ada Wong]], and even [[TheBusCameBack the]] [[SheIsAllGrownUp returned]] [[TookALevelInBadass Sherry]] [[VideoGame/ResidentEvil2 Birkin]] and a son of Albert Wesker, all face off against a new, global bioterrorism threat, rather than confined to certain locations to chase down a singular threat.<br/>* ''EndWar'' is one of these for the Creator/TomClancy [[TheVerse game verse]], including former members of the [[VideoGame//GhostRecon Ghosts]] and [[VideoGame/RainbowSix Rainbow]], along with the {{HAWX}} squadron and [[SplinterCell Third Echelon]].<br/>* ''VideoGame/MagicalGirlLyricalNanohaAsPortable: The Gears of Destiny'', which featured an unstable HumanoidAbomination whose out of control powers dragged in characters across time and space and produced {{Virtual Ghost}}s of dead people, incidentally allowing characters from the various recent installations of the franchise at the time (''[[Anime/MagicalGIrlLyricalNanoha The Movie First]]'', ''[[Manga/MagicalGirlLyricalNanohaVivid Vivid]]'', and ''[[Manga/MagicalRecordLyricalNanohaForce Force]]'') to join in the fray against the new threat. <br/>* As part of Creator/ArtixEntertainment's 10th anniversary celebration, six of their active online games at the time (''VideoGame/AdventureQuest'', ''VideoGame/DragonFable'', ''VideoGame/MechQuest'', ''VideoGame/AdventureQuestWorlds'', ''VideoGame/EpicDuel'', and ''VideoGame/HeroSmash'') [[KayFabe were attacked by]] [[CorruptCorporateExecutive Chairman Platinum and his company, EbilCorp]], sparking a cooperative war in which the playerbases of all six games had to band together as one and eliminate the invading forces in every single game within a week. [[spoiler: The players won.]]<br/>** Prior to this, there was a St. Patrick's Day event [[YouMeanXmas (known in game as the Blarney War or Lucky War in-universe)]] that united the ''[=AdventureQuest=]'', ''[=DragonFable=]'', and ''[=MechQuest=]'' timelines [[DisasterDominoes in a successive war]], and a war against Shearhide that was a crossover between ''[=AdventureQuest=]'' and ''VideoGame/WarpForce''.<br/>* Bringing the tradition into video games, ''VideoGame/MortalKombatVsDCUniverse'' has a plot along these lines with {{Darkseid}} being somehow and involuntarily [[FusionDance merged]] ([[ComicBook/AmalgamUniverse for the]] [[JusticeLeagueUnlimited third time]]), now with Shao Kahn into an HumanoidAbomination who grinds the two universes into destruction just by ''existing''. Midway considers it an {{Elseworld}} for the DC side of the story, though they did write the ''Kombat'' side so as to implicitly fit in between ''VideoGame/MortalKombat3'' and ''VideoGame/MortalKombat4'' (as well as hand it a ContinuityNod in ''VideoGame/MortalKombat9'': the Training Mode description for Shang Tsung's M-rated CaptainErsatz version of SelfDemonstrating/TheJoker's gun fatality is "Shang Tsung has picked up a few tricks from previous opponents."). In real life, the crossover had the effect of WarnerBros., DC's parent company, being allowed to acquire Midway's ''Mortal Kombat'' division (now named Netherrealm Studios) when Midway went bankrupt.<br/>* Though ''JumpSuperStars'' and its sequel have an ExcusePlot, it still does amount to [[spoiler: Dr. Mashirito from ''Manga/DoctorSlump'']] stirring up trouble, while the J-Heroes/Heroines try to stop him.<br/>[[/folder]]<br/><br/>[[folder:Webcomics]]<br/>* In late 2008, IrregularWebcomic had most of its separate "themes" converge when [[MeanwhileInTheFuture simultaneous]] [[TemporalParadox paradoxes]] occur and the universe imploded. Eventually the characters managed to restart the universe, but most themes suffered a ContinuityReboot in the process.<br/>** It appears another one is in the works, with several characters being transported to the 1940s, and the recurring ArcWord "Greatness is often linked with insanity."<br/>* ''LeastICouldDo'' parodied this with the storyline "Ultimate Final Civil War Invasion Crisis Thing", where the gaming webcomics (including ''Webcomic/PennyArcade'' and ''CtrlAltDel'') are attempting to take out the "straight comedy" comics and reassert their dominance. Receives several [[LampshadeHanging lampshades]], such as when [[QuestionableContent Faye]] calls the plot weak, and Rayne counters "[[FinalCrisis So was a cosmic vampire, but that didn't stop]] [[DCComics DC]]."<br/>* When Emily and Tesrin of ''AllOverTheHouse'' [[http://www.alloverthehouse.net/2009/12/04/unscheduled-stop/ crash-landed]] in ''TheLifeOfNobTMouse'', it kick-started a crossover that changed both comics permanently.<br/>* Webcomic/TheCrossoverlord is one between several superhero webcomics, including ''{{Webcomic/Lightbringer}}'', ''MechagicalGirlLisaANT'' , ''{{Mindmistress}}'', ''Webcomic/{{Dasien}}'' and Dead Debbie from ''Indefensible Positions''. The sequel, ''Webcomic/{{Crossoverkill}}'', retains {{Webcomic/Mindmistress}} and adds {{Webcomic/Energize}}, Yuuki from ''Sparkling Generation Valkyrie Yuuki'', [[EssayBeeComicsPresentsFusion Fusion]], Captain Perfect from ''BadGuyHigh'', MajesticKnight and ''Webcomic/MagellanHoodoo''.<br/>[[/folder]]<br/><br/>[[folder:Web Original]]<br/>* ''Webcomic/DeviantartSecretWars''<br/>* WebVideo/TGWTGYearOneBrawl, WebVideo/{{Kickassia}}, WebVideo/SuburbanKnights, and WebVideo/ToBoldlyFlee from the people at Website/ThatGuyWithTheGlasses.<br/>* These have become the ''main'' storyline in TheRandomverse, as is to be expected in a meta series for both Marvel and DC. Having Deadpool around means that inter-series continuity is now lampshaded.<br/>* Several in MarvelsRPG.<br/>* The blogosphere side of the SlenderManMythos has had a few. Some examples include the Winter Solstice story in ''Blog/ObserveAndTerminate'' and ''Blog/AHintOfSerendipity'', and the Wedding crossover from ''Take The Myth''.<br/>* TheFearMythos, a spin-off of the SlenderManMythos, had one early in its existence: The Birth of the Manufactured Newborn. It involved four different blogs intertwining their stories: ''The Hunter'', ''The Devil and God Are'', ''They Sought It With Thimbles'', and ''Blog/HiddenInTheTrees''. The crossover involved a conspiracy by the [[EldritchAbomination Fears]] to birth a new one into their ranks, while the human characters either try to stop them or try to help them.<br/>[[/folder]]<br/><br/>[[folder:Western Animation]]<br/>* ''WesternAnimation/DextersLaboratory'': ''Last But Not Beast'' had the Dexter, Monkey and Justice Friends segments connected via the giant monster destroying Japan. The Monkey segment even skips its usual opening credits to continue the story.<br/>* ''TurtlesForever'': It deals with the [[WesternAnimation/TeenageMutantNinjaTurtles2003 2000 Shredder]] returning from his exile, taking over the [[WesternAnimation/TeenageMutantNinjaTurtles1987 1980s Shredder's]] [[WeaponOfMassDestruction Technodrome]], and, after learning of the [[TheMultiverse TMNT Multiverse]], he plans to go conquer it, until [[GoMadFromTheRevelation he learns that]] ''there are teams of TMNT in each and every reality''. He goes after the [[ComicBook/TeenageMutantNinjaTurtlesMirage original Mirage Turtles]] in order to destroy all the Turtles, and three seats of Turtle Teams set off to stop him.<br/>* HannaBarbera once did this, combining ''Birdman'', ''The Galaxy Trio'', ''Moby Dick'', ''SpaceGhost'', ''Mightor'', and ''The Herculoids'', among others. Sometimes, Boomerang would show the whole thing.<br/>* The Phoenix Saga of the ''WesternAnimation/XMen'' animated series was a borderline example. Although there were no actual team ups, it used appearances of other MarvelComics characters to emphasise the seriousness of the whole thing. [[{{Comicbook.Excalibur}} Captain Britain]] and Comicbook/DoctorStrange were seen reacting to the Phoenix and {{Spider-Man}} (albeit only his silhouette and his hand) and [[ComicBook/IronMan War Machine]] were seen protecting civilians in [[BigApplesauce New York]]. In the sequel, the Dark Phoenix Saga, Doctor Strange briefly appeared again, along with [[TheMightyThor Thor]], a Watcher and Eternity.<br/>* A made-for-TV animated movie called ''WesternAnimation/TheManWhoHatedLaughter'' brought together a big group of ''newspaper'' comic strip characters -- ComicStrip/{{Blondie}}, ComicStrip/{{Popeye}}, ComicStrip/BeetleBailey, ComicStrip/HiAndLois, ComicStrip/SnuffySmith -- who are ultimately saved from a comics-hating villain by the combined forces of a group of newspaper adventure strip heroes (ComicStrip/MandrakeTheMagician, ComicStrip/FlashGordon, ComicStrip/PrinceValiant, ComicStrip/ThePhantom, and ComicStrip/SteveCanyon). All the characters are owned by King Features Syndicate.<br/>* Hurricane Flozell blew her way into all three ''Creator/SethMacFarlane'' shows, ''WesternAnimation/TheClevelandShow'', ''WesternAnimation/FamilyGuy'' and ''WesternAnimation/AmericanDad'' culminating in the final scene of the ''American Dad'' episode where Cleveland, Stan, and Peter have a standoff.<br/>[[/folder]]<br/><br/>---- </body> </hml>