A nifty trick to get some of the traditional ScienceFiction capabilities in a show that's set in the present. Rather than growing your own Phlebotinum, just have a passing SufficientlyAdvancedAlien [[NotOfThisEarth dump some on you]].

The biggest advantage of using imported phlebotinum is that it allows you to do a ScienceFiction story with characters who are more like contemporary humans without begging for too much [[WillingSuspensionOfDisbelief credulity]] from the audience. We don't need an enclave of scientists who are way smarter than anyone ought to be, we don't need to have a super-powered {{masquerade}} operating in total secrecy, and we don't need to set the show in TheFuture, speculating [[TwentyMinutesIntoTheFuture what society will look like]] and probably date ourselves when we [[TheGreatPoliticsMessUp get it wrong]]. John Q. Ordinary guy just gets some uber-technology from another world dropped in his lap.

Allows for even more PhlebotinumBreakdown than usual, since our heroes often have [[LowCultureHighTech only a passing understanding of how it works.]]

You can also fuse your Imported Alien Phlebotinum with the home-grown variety to produce hybrid devices which do wacky things. The process of contriving such devices leads to a good {{MacGyver|ing}}-style plot.

Additionally, we get a reasonable explanation for NoPlansNoPrototypeNoBackup and DisposableSuperheroMaker if the phlebotinum is something that [[BlackBox can't be reproduced]] with Earth technology.

Sometimes the aliens do this on purpose, to lend us humans a helping hand. Sometimes, it's an accident. In the latter case, they might show up later and want it back. Violently.

Does not cover natural resources which are extra-terrestrial in origin, such as [[{{Unobtainium}} super-alloys]] from meteors; those are GreenRocks.

If the technology is not fully understood, and has side effects that didn't show up in testing, then it's an example of the BlackBox.

On the other hand, if we manage to reverse-engineer it to the point of making it part of everyday technology, then ETGaveUsWiFi is in effect.

See also LostTechnology, which is inherited from advanced beings of the same planet, but a different time.

See SpiceOfLife when it is an edible resource with some use in space.
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!!Examples

[[foldercontrol]]

[[folder:Anime & Manga]]
* The aliens wanting their phlebotinum (the SDF-1) back was the driving force for the first part of ''Manga/RoboTech''. Its parent series, ''{{Macross}}'', had some differences: the aliens were in hot pursuit of an ''enemy'' ship, and had planned to simply destroy it until they found out that the locals had salvaged it... which they had thought impossible (they were ignorant of how to make repairs to their own tech).
* The Core Robots and related technologies from ''Manga/ParallelTroubleAdventureDual''.
* ''VideoGame/SuperRobotWarsOriginalGeneration'' has a variation on this: The alien faction known as Inspectors gave humanity the Black Hole Engine to see if they were advanced enough to figure it out. If they could, it signaled that they likely had a good enough tech-base to justify invading and stealing it to hybridize with their own.\\
\\
Also, it is established that the technology to make HumongousMecha feasible was acquired from a trio of meteors that fell to Earth some time ago. These meteors ALSO contained further Phlebotinum, called Extra-Over Technology that allowed the creation of tremendous power sources that would be impossible without the Unobtanium.
* [[EmpathicWeapon Raising Heart]] in ''MagicalGirlLyricalNanoha''. Given to Nanoha by a [[strike:[[{{Animorphism}} Ferret]]]] {{Human Alien|s}} during an emergency, [[JumpedAtTheCall after which she decided to help him collect]] the {{Mineral MacGuffin}}s his cargo ship dropped when it was destroyed on its way back from an [[AdventurerArchaeologist archaeological expedition]].
* Some of the weirder technology in ''Anime/DarkerThanBlack'' (like [[LaserGuidedAmnesia memory erasure]]) is {{handwave}}d as having come from [[NotOfThisEarth the Gate]].
* The Lance of Longinus in ''Anime/NeonGenesisEvangelion''. [=OHKOs=] Angels and [[spoiler: is a big part of Instrumentality]], or your money back!
* The aliens in ''Manga/CannonGodExaxxion'' gave a ton of stuff to Earth to make it easier for their eventual invasion since they had remote control over everything handed over.
* In ''StarBlazers''[=/=]''Anime/SpaceBattleshipYamato'', Earth is undergoing radioactive bombardment. However, a friendly alien race gives Earth the ability to make Warp Drives. Japan puts this on the battleship Yamato. They also make a new addition, the WaveMotionGun, and sets out to Iscandar. They need to get there and back within a year for Earth to survive. So this drives the entire plot.
* [[TheVirus The Apocalypse Virus]] in ''Anime/GuiltyCrown'' came from a fragment of a meteor strike that landed in Japan. Extensive research on the virus allowed the GHQ to eventually create the [[AppliedPhlebotinum Void Genome]].
[[/folder]]

[[folder:Comics]]
* With the exception of the magic-based [[TheGoldenAgeOfComicBooks Golden Age]] version, the Franchise/GreenLantern [[GreenLanternRing Rings]] are an explicit example, having been given to the various worthies by the [[SufficientlyAdvancedAlien nigh-omnipotent]] Guardians of Oa.
* Marvel's ''ComicBook/XMen'' got a lot from the Shi'ar thanks to [[InterspeciesRomance Professor Xavier being Lilandra's consort.]]
* The 1990s comics sequel to ''Series/LostInSpace'' used this as a RetCon to explain how Earth could have interstellar technology in 1997. The ''Jupiter 2'' had been reverse engineered from a crashed alien ship from Alpha Centauri. The "foreign agents" who employed Dr. Smith were revealed to be Alpha Centaurians working to prevent humanity from reaching their world.
* Comicbook/IronMan's {{archenemy}} the Mandarin has ''ten'' rings of power. These rings were found on a crashed spaceship of Makluan origin.
* DC's latest Comicbook/BlueBeetle is made of this...
* ''ComicBook/ScarletTraces'', a trilogy beginning with ''Literature/TheWarOfTheWorlds'' and expanding into an AlternateHistory in which Britain is an alien-fuelled superpower, is chock full of reverse-engineered alien technology.
[[/folder]]

[[folder:Films -- Live Action]]
* ''Film/{{District 9}}'' uses a variation of this trope. The alien "Prawns" have super weapons that evil MegaCorp MNU would love to figure out, but the weapons only work with alien DNA. When an accident causes [[spoiler:Wikus, the film's protagonist, to begin transforming into a prawn]], he becomes able to use the weapons -- which results in both MNU and Nigerian gangsters [[MacGuffinGirl chasing him]] so they can figure out how to access his power themselves.
* This was the whole premise of ''Film/{{Explorers}}''.
* Parodied in ''Film/MenInBlack''.
* ''Film/TheMeteorMan'': The title character survives a direct hit from a meteor, and gains superpowers.
[[/folder]]

[[folder:Literature]]
* In the ''Literature/IntoTheLookingGlass'' series by Creator/JohnRingo, Earth is attacked by an OrganicTechnology using HiveMind through a series of "portals" opened up by a lab mishap. Humans also encounter a friendly alien species, the Adar, who give them a literal BlackBox created by a (different) species of {{Sufficiently Advanced Alien}}s. After a brief period in which the device appears to have no function save as a "reusable nuclear hand grenade," they conclude that they were using it wrong and find a way to use it as a FasterThanLightTravel drive. This allows them to build a starship that can travel faster than light, but doesn't give them any other typical science fiction technology (although they manage to invent some of the nearer, harder-science applications themselves). Much of the drama of the second and third novels comes from the crew of the ship finding themselves in ''Franchise/StarTrek'' situations without the advantage of things like phasers, tricorders, and transporters.
* [[Creator/StrugatskyBrothers Arkady and Boris Strugatsky's]] novel ''Literature/RoadsidePicnic'' features "stalkers" who search an area called the Zone for alien artifacts left behind on Earth. Arguably a [[DeconstructedTrope deconstruction of the trope]] -- the items found in the Zone are powerful, but so ''alien'' that most are completely incomprehensible to humans, and many pose equally incomprehensible, and potentially lethal, dangers... And it's entirely possible that they are all simply alien ''garbage'', left behind by [[StarfishAliens visitors]] who treated Earth as an insignificant roadside stop on their journey.
* The Creator/FrederikPohl novel ''Literature/{{Gateway}}'' relates the misadventures of a "prospector" seeking fame and fortune by traveling aboard abandoned but still-functional alien spacecraft, discovered by humans on Gateway, an ancient, hollowed-out asteroid inside Venus' orbit. The problem: no one knows how the spaceships work, only that they travel faster-than-light to preset destinations on missions of unpredictable durations. Also, ships don't always make it back, and there's no guarantee that the crew will be alive even if they do.
* In Creator/CarlSagan's novel ''Contact'', the travel spheres which are the focus of the entire book are this. Unlike most examples, no materials are imported, and it's up to the earthlings to invent the metallurgical and chemical technologies required to actually create them. The plans are buried within a complex radio signal, and all nations on Earth start building them. To say the least, they are terrifically expensive.
* The Escafil device from ''Literature/{{Animorphs}}''.
** Or any other technology more remarkable than you might find in a high school.
** Also broccoli.
*** For most readers confused about the above: in the Animorphs universe earth had actually been colonized millions of years ago by a pacifist race who brought with them the main staple crop of their society, yes broccoli. The reason there's no evidence of them is that the meteor that hit earth was aimed at earth by a race that hated the pacifistic one, they got a bull-eye strike right on the colony.
*** But... but... broccoli is just a cultivar of the same species as cabbage and kale and rapini...
*** [[RuleofFunny Details!]]
* Half of the technology of ''Literature/KnownSpace''. We got [[FasterThanLightTravel FTL]] from Outsiders, and everything else from {{starfish|Aliens}}.
** Except the life-extending drug Boosterspice, which we got from [[{{Precursors}} our extraplanetary ancestors]].
*** Also variable-swords, which we got from ''even older'' AbusivePrecursors.
** And we got indestructible GP hulls and teleportation booths from Puppeteers.
** And the unique [[SwissArmyWeapon Soft Weapon]], left over from the Slaver empire.
* ''Literature/EndersGame'' has instantaneous communication from the Buggers, along with artificial gravity and other technologies that were reverse-engineered from the Bugger starships.
* "Cleaning Up", a short story by [[Creator/IainBanks Iain M. Banks]] (published in ''State of the Art''), is a humorous subversion of the trope. At the height of the UsefulNotes/ColdWar, bits of Imported Alien Phlebotinum start materializing all around the world, seemingly at random. The U.S. Military scrambles to understand and find some use for the devices [[RedScare before the Soviets do]], but before too long it turns out the whole thing was caused by a [[ArtificialStupidity hilariously malfunctioning]] alien garbage disposal system. Features an AntiGravity HoverTank built out of the equivalent of a stained water-bed from an alien NoTellMotel.
* ''Literature/AgainstADarkBackground'', a non-Culture SciFi novel by [[Creator/IainBanks Iain M. Banks]], uses this trope as its main narrative driver. The heroine, Sharrow, is forced onto a quest to recover the last known 'Lazy Gun', one a group of bizarre artifacts from an apparently alien technology which were found floating amongst the space wreckage of a destroyed planet in the home system a very long time ago. Lazy Guns are described as having a number of physical anomalies, such as weighing twice as much upside down as right-side-up, plus a freakish sense of humour. They have both caused wars and been used as weapons in war, as well as worshipped as gods and as relics of gods. It is not quite clear whether they are really Imported Alien Phlebotinum, originating outside the home solar system, or simply LostTechnology of the Ancients. The search means that the Lazy Gun functions in the narrative as the MacGuffin.
* In the ''Literature/TroyRising'' series alien computer chips act as this at the beginning. Earth's computer industry is devastated due to a shortage of rare materials and the alien tech is so sophisticated that a single circuit board can replace a supercomputer. Later on the protagonist starts importing alien AIs and gravity manipulation technology to run his industrial empire. He is able to produce more on his own after a while but is still unable to make any from scratch. An existing AI is needed to make more AIs and any gravity manipulation technology manufacture requires existing gravity manipulation tools.
* Partly played straight in Creator/HarryTurtledove's ''Literature/{{Worldwar}}'' series, where the [[LizardFolk Race]] is more advanced than humanity during UsefulNotes/WorldWarII (and, in some cases, is more advanced than us 21st century humans). A small chunk of the series is spent on several characters attempting to reverse-engineer parts of the Race technology and incorporate it into its human counterparts. They, more or less, succeed with taking apart and figuring out how to improve human (mostly British) jet engines, and the [[ThoseWackyNazis Germans]] manage to get their hands on an intact alien tank (traded for a bag of [[AlienCatnip ginger]]). Later on, a mutiny takes place on a lizard base in Siberia, and the mutineers surrender to the Soviets, believing they'll be treated well (not a very good assumption), providing them an entire military base to study. The British, notably, fail to figure out how the Race radar works, given that it uses integrated circuits instead of vacuum tubes (or valves, if you're British). At that point, it's very much a BlackBox, which the Brits, nevertheless, attempt to integrate into their new jet fighters in order to try to match the enemy in performance. By the ''Colonization'' series, the war is over, and the humans and the lizards have to live side-by-side (more or less), resulting in much more technology being traded and studied. In ''Homeward Bound'', the first human starship, the ''Admiral Peary'', is based on the Race design.
* The Hyperspace Gates in ''Literature/TheLostFleet'' were given to humanity by an enigmatic alien race. This proves to be a major plot point later because [[spoiler: the aliens retain remote control as well as the ability to detonate them]].
* Inverted in the ''Literature/{{Destroyermen}}'' series, which has humans occasionally crossing over into an AlternateUniverse, where evolution took a radically different turn. The Grik are a race of extremely-aggressive LizardFolk whose tactics mainly involve AttackAttackAttack and WeHaveReserves. Their goal is the utter destruction of the [[CatFolk Lemurians]]. The Grik aren't innovators, but they can improve on existing tech within limits (basically, they can upscale designs to a certain point but can't invent new things). They first obtained primitive ships by capturing and studying a Lemurian explorer vessel, arriving to Africa from Madagascar (it doesn't help that they slaughtered every crewmember instead of interrogating them). They proceeded to invade Madagascar and chased Lemurians to the sea. The next "upgrade" came in the form of a 17-century East Indiaman that was captured. The Grik copied the three-masted vessel but were unable to grasp the concept of gunpowder, so the only armaments are catapults throwing burning shells filled with oil. Eventually, as the series progresses, they get their hands on a [[spoiler:UsefulNotes/WorldWarII-era Japanese battlecruiser with the crew helping them improve their tactics]]. Of course, the Lemurians also got some help from humans, such as the [[spoiler:knowledge of Latin]], naval charts, and star-based navigation from the 17-century sailors. Later, they get help from the destroyer USS ''Walker''.
* Creator/MikhailAkhmanov's ''Literature/ArrivalsFromTheDark'' series starts with an AlienInvasion that is thwarted by [[spoiler:an alien observer from another race]], deliberately leaving most of the alien ship intact, so that the humans could catch up in the technological game and learn to defend themselves. Mere 37 years later, humans send a fleet built using technology derived from studying the alien ship to take the fight to the enemy. Averted with the [[SpaceElves Lo'ona Aeo]], who do sell some technology to other, less advanced races, but the devices are specifically designed not to reveal their inner workings and can always be disabled remotely.
* In Creator/RobertAHeinlein's ''Literature/BetweenPlanets'' The [[{{Precursors}} First Empire]] technology is reversed engineered from archaeological information and used to outfit and arm the ''Little David''. It allows for 20 g continuous flight along with artificial gravity to prevent the crew from being squashed and impregnable force field spheres. Earth technology that TheFederation has consists of rocket ships that do a burn and then coast at zero g and nuclear bombs whose blast the force field can contain.
[[/folder]]

[[folder:Live Action TV]]
* The [[Franchise/StargateVerse Stargates]] from ''Series/StargateSG1'' and ''Series/StargateAtlantis''. In those same shows, staff weapons, naquadah generators, zats, and the hybrid technology used by the SGC's intergalactic space ships. I mean, seriously, what could be cooler than the notion that by the year 2007, the US Air Force could build no less than ''five'' intergalactic space ships? (Ignoring the fact that one of said ships were destroyed. Two if you count an alternate timeline) Hell, they gave one to ''Russia'' and another to ''China'' for Pete's sake. ''Both'' of those were destroyed.
** There was one nifty aversion as well, though. The Zero Point Modules (Ancient power sources) are usually treated as {{MacGuffin}}s that are the only way of powering Ancient or other advanced technology. However in one AlternateUniverse episode, Carter adapted a device to cloak and phase the entire planet, and lacking any ZPM or other phlebotinum power source, they ran it off the ordinary power grid of the entire United States. It worked.
** The show is notable in that the alien technology is often adapted slowly, with {{Continuity Nod}}s over several seasons showing its development. For example, Stargate Command's IAP-based SpaceFighter took ''almost six seasons'' to develop fully. It was based on two damaged Goa'uld fighters that were stolen at the end of ''Season 1.'' We got to see them being worked on in a secret facility in Season 2, a failed early prototype was the focus of an episode in Season 4, and the first successful prototype was used in Season 6, followed by the final production model a season later.
** One amusing aversion- they never got around to trying to replicate staff weapons. In ''Stargate'' KineticWeaponsAreJustBetter, so [[GenreSavvy why waste the resources]]? ([[StunGuns Zatts]] would have been useful, but they ''were'' kind of busy.)
** And then Earth inherits a payload of Alien Phlebotinum when [[spoiler: The Asgard give them their entire technological database before blowing up their own planet]].
* The sphere from ''Series/SevenDays'' is hybrid technology. Its fuel source is pure Imported Alien Phlebotinum.
* In ''Series/WarOfTheWorlds'', the Blackwood Project occasionally steals some alien toy and contrives it into a one-off device.
* Ralph's superhero suit in ''Series/TheGreatestAmericanHero'' is a prime example.
* While Kryptonite doesn't count in ''Series/{{Smallville}}'', Clark's space ship does, as do the various Kryptonian artifacts featured over the course of the series.
* In one episode of ''Series/TheTwilightZone'', an alien comes to Earth and gives scientists plans for a free-energy device. Unfortunately, its construction requires [[{{Unobtainium}} an element]] not found locally. Fortunately, when they go to hunt him down, they find that he's accidentally left behind his comb, which is made of the stuff.
* ''Series/EarthFinalConflict'' had a seemingly benevolent alien race as its main plot point. Their technology was equitably given to all of mankind, as they saw fit. Notably, [[TeleportersAndTransporters portal stations]] in almost all major cities allowed global travel in seconds.
* ''Series/{{Torchwood}}'' is built around the premise of a quasi-governmental agency not just fighting aliens, but metaphorically or literally scavenging the bodies for exploitable technology.
* The holographic doctor on ''Series/StarTrekVoyager'' gains mobility by the acquisition of a mobile emitter from the future (granted, it's the federation future, but is there anything more alien than the future?)
* Sarah Jane Smith has scads of this in ''Series/TheSarahJaneAdventures''. Central to the series, she has the MagicalComputer (actually a [[spoiler:silicon-based alien in a computer shell]]) Mr. Smith and her sonic lipstick, not to mention many different gadgets which just make one-off appearances.
** Sarah-Jane was given her sonic lipstick and robot dog K-9 by the Doctor[[note]]the original K-9 created by a human scientist, but his successive models after the original was left behind on Gallifrey with Leela in ''Doctor Who'', including ''The Sarah Jane Adventures'' Mark IV, were presumably built by the Doctor[[/note]], from ''Series/DoctorWho'', who seems to function as something of a phlebotinum delivery service for people he likes.
* Quite a few ''Series/DoctorWho'' plots have been sparked by something like this- a society or groups abuses or gets abused by alien technology they don't understand. For example, in "The Curse of the Black Spot", a pirate ship is plagued by a siren who takes any person who is ill or injured. [[spoiler: The siren is actually a holographic computer program who functions as a doctor for a crashed alien ship.]]
* Morphing technology in ''Franchise/PowerRangers'' initially came from Eltarians, Karovians, and innumerable other unnamed alien species, but we figured out how to make our own without any help within a decade or so.
* Earth-based human-created Morphing tech first shows up in ''Series/PowerRangersLightspeedRescue''. It, ''Series/PowerRangersOperationOverdrive'', and ''Series/PowerRangersRPM'' are pretty much the only series where the powers ostensibly come solely from modern, albeit fictional, technology. ''RPM'' is even an AlternateUniverse where there's no known alien involvement at all.
* The entire subject of the 1960s British sci-fi series ''Series/AForAndromeda''. A signal from the Andromeda galaxy tells Great Britain how to build a powerful computer which then plans to take over the world by making humanity dependent on it. It designs a missile to shoot down an orbital bomb, as well as synthetic life in the form of a beautiful woman, who then proceeds to develop emotions and eventually turns against her creator. In ''The Andromeda Breakthrough'' the computer's role is more ambiguous; it is meant to be a tool so that humans can avert their own destruction, though it isn't above manipulating events and [[UtopiaJustifiesTheMeans killing a lot of people in the process]].
[[/folder]]

[[folder:Pinball]]
* In ''VideoGame/MadDaedalus'', the discovery of a crashed alien spaceship -- and its functional AI -- eventually gives the ancient Greeks advanced technology such as cloning, time travel, and bio-engineering.
* ''VideoGame/TimeCruise'' has a human inventor who receives instructions for a TimeMachine from [[TelepathicSpacemen telepathic extraterrestrials]].
[[/folder]]

[[folder:Tabletop Games]]
* The basis of ANIMA technology in the TabletopRPG, ''TabletopGame/BlissStage''.
[[/folder]]

[[folder:Video Games]]
* Most research options in ''VideoGame/XCom: UFO Defense'' are opened up by acquiring artifacts from or interrogating aliens. If you want to build some of these artifacts yourself, you need to consume the phlebotinum.
** To be specific, Elerium 115 is the fuel of the alien spaceships, it is used in pretty much ALL high-tech manufacture you can carry out at your base, and there is ''no way to acquire it'' except as salvage from downed enemy vessels.
** Also, the VideoGame/UFOAfterBlank series and VideoGame/UFOAlienInvasion have this. In UFOAI, the scientist says that he doesn't even try to understand how aliens got their plasma tech working, since according to them it should be impossible.
* ''VideoGame/PredatorConcreteJungle'' is set TwentyMinutesIntoTheFuture on an Earth technologically advanced by the study of accidentally-leftover Predator equipment.
* ''Franchise/MassEffect'': The Mass relays, the Citadel itself [[spoiler:and the Keepers]] having been created by the {{Pr|ecursors}}otheans, since it was left there for the previous races so that they could better understand element zero. [[spoiler: In truth, all were created by the [[AbusivePrecursors Reapers]] in order to harvest the galactic civilization of organics for their own ideals by predetermining the path of evolution and exploration.]]
** The molten-metal-shooting Thanix gun from ''ME 2'' also counts. It's based on [[spoiler:reverse-engineering Sovereign's weapons]].
** The [[spoiler:Crucible]] in ''VideoGame/MassEffect3'' is the product of the combined efforts of ''every'' civilization that was harvested in previous cycles, and is the only weapon that gives Shepard a chance-in-hell at defeating the Reapers.
* The TCS ''Midway'', from ''VideoGame/WingCommander Prophecy'', gets this later in the game, in the form of a [[WaveMotionGun plasma cannon that can obliterate entire fleets in one shot]].
** [[InvisibilityCloak Cloaking devices]] used by humans, in ''VideoGame/WingCommander III'' and ''VideoGame/WingCommander IV'' were derived from captured examples of [[MegaNeko Kilrathi]] equipment for the same purpose.
* In science-fiction ''VideoGame/FourX'' strategy games, it's pretty much standard to get a bonus to your research if you find {{Precursor}} artifacts. It shows up in ''VideoGame/GalacticCivilizations'', ''VideoGame/SinsOfASolarEmpire'', ''VideoGame/MasterOfOrion'' and probably many others.
** ''Galciv'' also allows you to ''literally'' import alien phlebotinum by trading techs with other races. Hey, Arceans, this is the Terrans. You guys have a pretty tasty military; I'm glad we're allies - my military angles are a bit low since I pumped all my research into diplomacy and trade enhancements. Say, I've noticed that you guys have lasers and the Drengin have gone pretty heavily into armour to screw over my mass drivers when the [[ConflictBall inevitable war breaks out]]; I don't suppose you'd be willing to swap your high-grade energy weapon tech for this [[CrimefightingWithCash massive]] {{fi|ction500}}stful [[ScrewTheRulesIHaveMoney of money]], this trade enhancer and my [[LensmanArmsRace now-obsolete singularity drivers]]? You would? Pleasure doing business with you. (And then there's espionage, in which you can ''steal'' the alien phlebotinum; if you've been focusing on techs other than weapon upgrades, it's possible your spies will hand you the blueprints to a missile weapon that's significantly more advanced than your lasers, leading to an unpleasant surprise when you kill them with their own guns.)
* ''VideoGame/{{Prey}}'' takes it to the next level. Aboard this massive bio-mechanical alien spaceship, you eventually find a gun that ''the aliens themselves cannot identify''. Imported Alien ''Alien'' Phlebotinium!
** Assuming you speak of the [[spoiler: acid sprayer]], it's built by [[spoiler: LaResistance]].
* In the ''VideoGame/CommandAndConquer'' series, the majority of the Earth is being consumed by Tiberium, alien phlebotinum crystals that appeared in Rome and began growing outwards, rendering much of the world uninhabitable. If you get close to the crystals without protection, they start growing around you, on you, and ''in'' you, and you quickly hemorrhage to death. Ironically, the Tiberium is also an incredibly efficient energy source. The aliens (known as the Scrin) that might have been responsible recently showed up and are annoyed that the human race hasn't died out yet- apparently, the Scrin wait for all life on a planet to die off before they come to harvest the "ichor" (their term for Tiberium). After a series of defeats at the hands of both Nod and the GDI, their leader has ordered a full invasion fleet to exterminate mankind.
* In ''{{VideoGame/Transcendence}}'', much human technology is based on this, and there are plenty of devices that are completely alien in origin. These include the Stargates, the Gems of Despair, Sacrifice, and Contrition, and the Transpace Jumpdrive.
* The "Medi-porter" used in ''VideoGame/CityOfHeroes'' to justify the use of DeathIsCheap is based off of recovered Rikti technology. In the parallel world of Praetoria, where the Rikti did not invade, [[FridgeLogic there is no explanation given]] as to why the medi-porter still exists.
** In Praetoria the Medi-Port was created by Praetor Keyes (Anti-Matter). This is public knowledge and given in the Preatorian Tutorial. Later you also discover that he in fact stole and reverse engineered the technology from the Rikti.
* In ''VideoGame/MetroidOtherM'' the plasma gun Anthony Higgs wield is a reverse-engineered version of the Chozo plasma beam that Samus has in her ArmCannon. It does the exact same damage too but it takes a longer time to charge up a plasma beam and fire it than the one Samus has inside her ArmCannon.
* In ''VideoGame/{{Freespace}}'', the only reason the Terrans and Vasudans survived their first encounter with the Shivans was because they stole a bunch of Shivan tech and adapted it to their fighters. In the sequel, they've even managed to copy the Shivan capital ship beams and outfit their own destroyers and cruisers with them. Despite this, the Shivans consistently remain far more advanced technologically.
* ''VideoGame/PlaystationAllStarsBattleRoyale'' combines this with VictorGainsLosersPowers. The character endings has the fighter [[spoiler:who defeated Polygon Man]] go on to utilize AP (All-Star Power) in some way for their own convenience, with some endings leading into the beginning of certain sequels. The AP-factor serves as a decent explanation for all the [[AdaptationalBadass roster being noticeably more powerful than usual]]. VideoGame/{{Jak|AndDaxter}} even claims that he probably couldn't have pulled off his victory without "this new Eco."
* ''VideoGame/MightAndMagic VII'' does an odd variant. The imported stuff is pretty much the same as the LostTechnology already on the planet (ultimately it's from the source -- [[{{Precursors}} the Ancients]] -- just from different colonies of theirs), some aesthetic differences with the robots and blasters aside, so the technology ''itself'' is not exactly the most important thing (although it does play a part, since some of the imported technology's native counterparts had long since broken) -- ''that'' is the people that imported the phlebotinum.
[[/folder]]

[[folder:Web Comics]]
* The titular perfume in ''ErikasNewPerfume''.
* The interstellar transmitter which once sat in Bob's front yard in ''WebComic/TheInexplicableAdventuresOfBob''. It eventually got blown up by SpacePirates.
* In ''WebComic/ElGoonishShive'', the TransformationRay Gun was brought to a [[TeenGenius young Tedd]] by [[InsufficientlyAdvancedAlien aliens]] who needed someone to upgrade its programming so they could use it to blend in better on Earth. He ended up using it recreationally to engage in temporary GenderBending of himself and his friends. Through a chain of events, it ended up contributing to the creation of a bisexual female duplicate of Tedd's best friend and caused her to be endowed with the ability to emulate one of the its female transformation settings by shooting a beam from her hand.
* ''Webcomic/{{Drive}}'': The titular Ring Drive is this to the protagonists, but the {{Sufficiently Advanced Alien}}s who invented it are still around, and apparently want it back.
[[/folder]]

[[folder:Western Animation]]
* Forms almost the whole basis of ''WesternAnimation/{{Ben 10}}'' and '' WesternAnimation/Ben10AlienForce''. The Omnitrix from ''WesternAnimation/{{Ben 10}}'' fell to earth when Vilgax blew up the spaceship it was on in an attempt to seize it for himself. Given who wound up with it, it's a miracle the planet survived.
* Subverted in most versions of ''Franchise/{{Transformers}}'', as the main characters ''are'' the aliens whose technology their human allies (or enemies, depending on the faction) retrofit into their own designs.
** Oddly, despite them being a show about alien robots, ''WesternAnimation/BeastWars'' plays this straight with Megatron using technology stolen and retrofitted by the even ''more'' alien Vok.
** There have been some cases, such as in ''WesternAnimation/TransformersAnimated'', where humans have reverse-engineered some Transformers parts (thus explaining today's rapid technology growth).
%%* All the elements of this trope are used in ''WesternAnimation/MegasXLR''.%%
* In ''WesternAnimation/AdventuresOfTheGalaxyRangers'', two aliens share their [[FasterThanLightTravel hyperdrive]] with Earth in exchange for our help in defeating the evil Crown Empire.
* In ''WesternAnimation/MonstersVsAliens'', heroine Susan Murphy is turned into [[AttackOfThe50FootWhatever a 49-foot 11-and-a-half-inch giantess]] by a meteor saturated with Quantonium, which the BigBad is after to power his evil scheme.
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