[[quoteright:223:[[TabletopGame/MagicTheGathering http://static.tvtropes.org/pmwiki/pub/images/Swamp.jpg]]]]
[[caption-width-right:223:Tap, Dark Ritual for Hypnotic Specter, gg?]]

->'''Westley:''' A few more steps and we'll be safe in the Fire Swamp!\\
'''Buttercup:''' We'll never survive!\\
'''Westley:''' Nonsense. You're only saying that because no one ever has.
-->-- ''Film/ThePrincessBride''

In fiction, swamps are often portrayed as godforsaken places that no man enters willingly. When they aren't infested with undead horrors, they hide tribes of hideous frog-, lizard-, or fish-men (or possibly [[NinjaPirateZombieRobot fishlizardfrogmen]]) who slink from their half-sunken temples to grasp the unwary with their cold hands and drag them beneath the still black water. At the very least, they are the home of poisonous snakes and strange, incurable diseases. Often, there are ancient curses that cause travelers to become lost and wander the swamps forever. Will o' the Wisps (also called corpse candles and GhostLights) lead the unwary into quickbogs to die. For extra horror, people who get lost in the swamp may themselves [[TragicMonster become one of the monsters]] infesting it. Swamps are also a popular home for [[WickedWitch witches]], [[HollywoodVoodoo voodoo ladies]], families of inbred cannibals, [[OurZombiesAreDifferent zombies]], and other unsavoury types.

There is an element of TruthInTelevision to this: Swamps were long regarded as dangerous and unsanitary. They tend to attract a lot of insects, which can spread disease; the sodden terrain can make traversing them on foot difficult; many swamps are prone to heavy fog because of all the water, which can make it easy to get lost; and some swamps are also inhabited by dangerous animals, such as alligators. More realistic depictions will have swamps as [[NatureIsNotNice dangerous and unpleasant]] rather than outright evil. Expect lots of complaining about mud, leeches, and over-sized mosquitoes, and (in summer) the godawful humidity.

In real-world folklore, swamps were often regarded as cursed, haunted or full of monsters. This is, of course, the basis for many fictional portrayals. That said, swamps, marshes and other wetlands are an important part of the ecosystem, providing a habitat or breeding ground for many different species. Some are actually quite nice places to go birdwatching or fishing. Swamps are natural ''water level monitoring devices'' because in rainy times they collect rainwater as a sponge and thus prevent floods. In dry times swamps are water reservoirs.

In a VideoGame [[BubblegloopSwamp setting]], swamps will frequently be inhabited by zombies or carnivorous plants. Expect to find a lot of GrimyWater as a gameplay mechanic.

Not to be confused with BubblegloopSwamp, though the two may overlap.

----
!!Examples:

[[foldercontrol]]

[[folder: Anime And Manga ]]

* Onigafuchi, in ''HigurashiNoNakuKoroNi'', is believed to be the mouth of a dormant volcano, and the villagers believe that it could leak toxic gas at any moment. [[spoiler: BigBad Takano uses this as an excuse to cover the true reasons for the massacre of Hinamizawa]].
* The Numa Numa no Mi/Swamp Swamp Fruit [[ElementalPowers Logia-class]] [[OnePiece Devil's Fruit]] eaten by [[AxCrazy Caribou]] allows the user to instantly create a swamp anywhere, and to absorb things into it. However, it's more the [[SerialKiller person creating the swamps are evil]].
* In Episode 22 (and 23 probably) an opponent of Alice uses some sort of mind trick or illusion of this a bit in "PumpkinScissors".

[[/folder]]

[[folder: Comic Books ]]

* Comicbook/SwampThing and Comicbook/ManThing were both "born" in swamps, as was their [[TheGoldenAgeOfComicBooks Golden Age]] inspiration, The Heap.
** Alan Moore's run on ''Comicbook/SwampThing'' averted this a bit, as while the swamp was mysterious and sometimes dangerous, evil tended to ''intrude'' upon the "clean earth" that was the titular character's place of power.
** Man-Thing isn't really evil either.
* DCU villain Solomon Grundy was created from a dead gangster that was tossed into a swamp.

[[/folder]]

[[folder: FanWorks]]
* Played with in ''Fanfic/WithStringsAttached'' with the Poison Swamp. The four and the Hunter have to cross Goblin Valley and enter the swamp in order to get to the next portgate. The journey is more nerve-wracking than the swamp, which is blessedly goblin-free, and the four are not at all worried about protecting themselves from the various denizens of the swamp. [[PoorCommunicationKills Too bad they didn't tell the Hunter this.]] After the Hunter slaughters half a pack of Poison Wolves, it's clear the only “evil” in the swamp is him.
** John even pegs the swamp as artificial, though he doesn't know why anyone would want a swamp there.
[[/folder]]

[[folder:Films -- Animated]]
* In the first ''WesternAnimation/{{Shrek}}'' movie, Lord Farquaad exiles all magical creatures to the swamp where the titular ogre already lives. Granted, they're not actually all that evil, but the principle is the same. On a similar principle Shrek lives in the swamp because he's an ogre, and wants to play on the perceptions to get more privacy.
* The Bayou in Disney's ''Disney/PrincessAndTheFrog'' looks rather murky and is infested with nasty crocodiles.
* Devil's Bayou from ''Disney/TheRescuers''. The presence of Madame Medusa doesn't make it any frendlier.
[[/folder]]

[[folder:Films -- Live-Action]]
* The ''Film/CreatureFromTheBlackLagoon'' lived in the swampy jungles of the Brazilian rainforest.
** The film was actually shot in Wakulla County, Florida... an area known for its mosquito-infested swampland.
* ''Film/{{Labyrinth}}'' has the Bog of Eternal Stench, a wretched swamp that would make anyone unfortunate enough to fall in it stink forever.
* The swamp world of Dagobah in ''Film/TheEmpireStrikesBack'' and ''Film/ReturnOfTheJedi'' certainly looks evil, and there's at least one big, nasty swamp creature interested in eating you, but it [[SubvertedTrope also]] is the home of [[BadassGrandpa Y]][[TheMentor o]][[OlderAndWiser d]][[OldMaster a]].
** It also contains the strange tree-cave, which holds an unusual presence of the Dark Side of the Force.
*** And another swamp is home to [[EthnicScrappy Jar Jar]].
* In ''TheAdventuresOfMiloAndOtis'', Deadwood Swamp is a desolate, terrible place. Just see [[IDontLikeTheSoundOfThatPLace the name]].
* While the actual swampland in ''Film/MontyPythonAndTheHolyGrail'' is never seen, the King of the Swamp Castle is suspiciously eager to get the hell out of there. So much that he's willing to marry his son to a hideous princess in order to get his hand on her huge... tracts of land.
** Later he also tries to adopt the princess by killing both his son and her father.
** It is also kind of played. The King tried building the castle atop the swamp just to show his friends that he can make a castle strong enough. It sank into the swamp. He built a second one. That sank into the swamp. Then he built a third one. That burnt down, fell over and sank into the swamp. The fourth one stays up... you may start wondering that the swamps are nasty enough taking down 3 castles that the King wants out of it. Surprisingly, he is kinda proud on the fourth castle's toughness.
*** [[FridgeBrilliance Its entirely possible]] that the only reason the fourth castle didn't sink into the swamp is because its sitting on top of the sunken ruins of the previous three.
* The monsters of ''Film/AttackOfTheGiantLeeches'' dwell in the swamps of Florida.
* AJ Annila's ''Film/{{Sauna}}'' is mostly set in a nameless village in the middle of a large swamp. [[TownWithADarkSecret It's not a nice place.]]

[[/folder]]

[[folder:Literature]]

* In ''Literature/TheLordOfTheRings'', the Dead Marshes feature the usual treacherous footing, constant fog, and corpse candles. There were also horrible, pallid faces floating just beneath the water's surface. Looking at the faces too closely would cause you to become entranced and fall into the water.
** There was also the insect-infested Midgewater Marshes in ''Fellowship of the Ring''.
---> "What do they live on when they can't get hobbit?"
* In ''Literature/RowanOfRin'', one of the challenges Rowan's party faces is a swamp. It's covered in fog, every step needs to be probed with a pole lest you fall into the sludge and drown, and the images and voices of their loved ones appear to lure the heroes from the safe path.
* ''Literature/ThePrincessBride'' has the Fire Swamp. The three primary dangers of the swamp are random spouts of fire (easily avoided by identifying a popping noise right before one erupts), the lightning sand (though once you've fallen into that one, it's easy to look out for), and the [=ROUSes=] (RodentsOfUnusualSize. [[TemptingFate I don't think they exist]]...)
* The Swamps of Sadness in ''Literature/TheNeverendingStory'', in which Atreyu's horse Artax dies of despair.
* ''TheBelgariad'' both uses and averts this with the swamps of Nyissa. When the main cast goes through them, they're hopelessly depressing, sinister, astonishingly dangerous, and full of a variety of narcotic compounds and poisonous plants. Later, they pick up a Nyissan ally, the eunuch Sadi, who is perfectly fond of his homeland and disheartened when they come across a cursed swamp. When asked why, he explains that a swamp is green and verdant with life, but that ''this'' particular swamp is nothing but death and decay.
** Further north from Nyissa there's the Fens in Drasnia (and part of Algaria). Their bad reputation comes from the countless midges and the fact that navigation is problematic at best. Much of what looks like solid land are in fact free floating mounds of vegetation that float around in the sluggish current. There are also fenlings, intelligent, otter-like creatures that have a reputation for changing channels around. They'd do it too, more out of a sense of mischief than maliciousness though.
* The ''{{Goosebumps}}'' book, and tv adaptation, of ''The Werewolf of Fever Swamp'' of course features the titular werewolf as the main antaganist. However the swamp itself is presented as a far greater UltimateEvil.
* ''Discworld/WitchesAbroad'' features a swamp inhabited by a benign practitioner of HollywoodVoodoo. The swamp itself is said to be a source of great power, and when one undead character is imbued with it he becomes virtually unstoppable.
** While Mrs. Gogol is on the side of the protagonists, she's not completely morally white, having been the lover and supporter of the rather tyrannical Baron, until he was deposed by the even more tyrannical Lady Lilith.
* In ''TheArtOfWar'', Sun Tzu advises the reader never to lead his army through a swamp, because that's the best place for the enemy to lay an ambush.
* In Creator/RobertEHoward's ConanTheBarbarian story "Literature/TheScarletCitadel", [[EvilSorcerer Tsotha]] got his EyeOfNewt from a swamp.
-->''"It is steeped in the juice of the purple lotus which grows in the ghost-haunted swamps of southern Stygia," said the magician. "Its touch produces temporary paralysis.''
* In Franny Billingsly's Literature/{{Chime}}, the town of Swampsea is next to - what else? - a giant, terrifying swamp infested with witches, dead hands, and talking flowers, among others.
* In L. Jagi Lamplighter's ''[[ProsperosDaughter Prospero Regained]]'', parts of Hell.
* The Marram Marshes in ''Literature/SeptimusHeap'' may not ''be'' evil ''per se'', but they are infested with ghosts, wraiths and all manner of evil stuff.
* The [[TheSwordOfShannara Mist Marsh]] is haunted by a Kraken-esque Wraith. The [[ElfstonesOfShannara Matted Brakes]] are a hellhole populated by The Things, which you will not see until they are on you. And the In Ju...the In Ju's on Morrowindl, a one-island CrapsackWorld, and still manages to be one of the worst places to go ever.
* In Creator/GeneStrattonPorter's ''Literature/{{Freckles}}'', Freckles's original impression of the Limberlost. He gets over it and finds it a place of wonder and natural beauty. [[spoiler:Then, Black Jack dies from a poisonous snakebite in it, making people wonder that he tried to cross a section in the dark.]]
* ''Literature/GalaxyOfFear'' features a trip to Dagobah. A group of surveyors had gotten stranded there, died of predators and sickness, and left behind some malnourished, uneducated kids who did not know what stars were, who grew up to call themselves the Children. [[spoiler: Who are [[ImAHumanitarian cannibals]] thanks to NoPartyLikeTheDonnerParty.]] There's also Yoda, who did nothing to prevent those events.
* Book 4 of Literature/CodexAlera has a fairly realistic version, the swamps of Kalare are muddy, insect-ridden, and hard to navigate, but the only real exceptional danger is the giant lizards that travel in packs. It's worth noting that said swamps are in the region controlled by the major human antagonist of the series.
* In Creator/HPLovecraft's ''Literature/TheCallOfCthulhu'', a cult are sacrificing people in a horrible area of Louisiana swampland.
* The Sucking Pit, in the moronic horror novel ''The Sucking Pit'' by Guy N. Smith, is a bottomless bog full of rotting corpses that sucks people in, whereupon the rotting corpses have sex with them.
[[/folder]]

[[folder:Live Action TV]]
* Played with in ''Series/TheXFiles'' episode ''Bad Blood''. While looking for a vampire's hideout, Mulder asks the local sheriff of a small town if they have any swamps. His reply?
-->"We used to, but the EPA made us take to calling them wetlands."
* In an episode of {{Survivorman}} where Les Stroud has to survive in the Louisiana swamps he remarks that while it can be rather pleasant during the day, the swamp is very spooky at night.
[[/folder]]

[[folder:Music]]

* In Music/RhapsodyOfFire's ''Emerald Sword'' saga and ''Dark Secret Saga'', the Darklands where Akron rules supreme are surrounded by the swamps of Halgor, a dark, gloomy place with waters infested by ferocious sea serpents. Is also subverted in the Dark Secret saga, when our heroes hide in the swamp to hide from the living dead chasing them.
* Charlie Daniels Band's "Legend of Wooley Swamp" talks of the titular swamp as a place where travelers are advised not to go at night, as there are "things that crawl, things that fly, and things that creep around on the ground", and can "make a strong man die from fright".
[[/folder]]

[[folder: Tabletop Games ]]

* Swamp cards in ''TabletopGame/MagicTheGathering'' produce black mana. There are also Bog Wraiths, Will o' the Wisps and numerous other horrible swamp creatures. The designers insist that ''TabletopGame/MagicTheGathering'' [[DarkIsNotEvil does not have an evil color]], but black does represent death, greed, and amorality. It is also the color that (until recently) contains all the [[AlwaysChaoticEvil classically evil]] creatures, including nearly every undead monster you can name, demons, cosmic horrors, etc.
** Not to mention the card [[http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=660 Evil Presence]]. Not happy with your neighbour's depressingly wholesome Tropical Island getting sunlight all over your yard? Slap an evil curse on it. Instant swamp!
** In the end of the Kamigawa saga, however, [[spoiler: the main hero settled nicely in a marsh]]. So, [[DarkIsNotEvil Swamps Are Not Always Bad]]. Kamigawa block in general was an intentional aversion of this trope, as the main villain uses white mana (meaning DarkIsNotEvil and LightIsNotGood are both in effect)
** Among the ten original dual-mana land cards, the red/black one, white's enemies, was the Badlands. Though the Badlands are not particularly swampy (far from it, they're usually very dry), and are quite spectacular to behold.
* The ''TabletopGame/YuGiOh'' field spell [[http://yugioh.wikia.com/wiki/Venom_Swamp Venom Swamp]] is [[BlatantLies a lovely place to visit,]] especially when you consider the [[http://yugioh.wikia.com/wiki/Venom_Boa native]] [[http://yugioh.wikia.com/wiki/Venom_Serpent inhabitants.]] And don't forget to pay a visit to the [[http://yugioh.wikia.com/wiki/Vennominon_the_King_of_Poisonous_Snakes royals!]]
* The Yozi Metagaos in ''{{Exalted}}''. His entire body [[GeniusLoci is a swamp]], and he's fond of snacking on anything that enters him. And when we say anything, we mean ''[[ExtremeOmnivore anything]]'' - he eats mortals, demons, time, space, identity, [[{{Autocannibalism}} himself...]] If you manage to survive a trip through him, you'll probably wish you hadn't, because you'll be infected with numerous diseases that will [[ViralTransformation turn you]] into an outgrowth of Metagaos.
** Three of Creation's major [[{{Mordor}} shadowlands]] are based around swamps, the largest of them (and one of the biggest in the world) being the [[NamesToRunAwayFromReallyFast Bayou of Endless Regret]].
* In ''DungeonsAndDragons'', swamps are the traditional home of black dragons, generally regarded as the most sinister and malicious of all dragon breeds. Other inhabitants include the evil frog-like bullywugs and the more neutral (but still aggressive) lizardfolk.

[[/folder]]

[[folder: Theme Parks ]]

* ''Monster Mansion'' at Six Flags in Atlanta, where you meet all kinds of friendly, silly monsters until you make a wrong turn. "Stay out of the marsh," indeed.
* Averted with the Blue Bayou resteraunt at several DisneyThemeParks.

[[/folder]]

[[folder: Video Games ]]

* ''Nan Zhong'' In the ''DynastyWarriors series'' has a poison swamp somwhere which can drain you health quickly...
* In ''VideoGame/ZanZarahTheHiddenPortal'', there's a swamp village called "Dunmore" and there's also "The Misty Swamp".
* In the forgotten PC game ''PrincessMaker2'' if you set adventure to the forest you might find a few swamps in there, not really evil but it has a shortcut trap that you'll least expect...
* In ''VideoGame/QuestForGloryIV'', the evil influence of the Dark One has caused the surrounding valley of Mordavia to mutate into a swamp, complete with undead monsters and deadly green goo. Needless to say, Baba Yaga thinks it's a lovely place to make her new home.
** It gets worse: This particular swamp is also home to Error 52, the most infamous GameBreakingBug of the series.
* In both ''DragonQuest'' and ''{{Ultima}}'', swamps deplete HitPoints and sometimes inflict the "Poison" StandardStatusEffect.
* A swamp appears in ''FinalFantasyTactics''. The enemies that often appear on the map are almost always undead or flying (or both), and thus [[MyRulesAreNotYourRules aren't effected]] by the highly poisonous water. You are, though.
** Conall Curach from ''VideoGame/FinalFantasyCrystalChronicles'' is another good example, being ridden with poisonous miasma and full of fish-like creatures, giant toads and ghosts. Not to mention its boss is a huge undead dragon.
* Averted in ''VideoGame/{{Minecraft}}'' until the introduction of witches, which live exclusively on swamps, and slimes, which now spawn in swamps as well as underground.
** [[MostAnnoyingSound The slimes alone make the swamps evil.]]
* This is the way it is in almost every single ''Franchise/TheLegendOfZelda'' game that features a swamp.
** The [[ExactlyWhatItSaysOnTheTin Swamp of Evil]] in ''[[VideoGame/TheLegendOfZeldaALinkToThePast A Link to the Past]]'', where you find the sixth Dark World dungeon: Misery Mire. Also the Plains of Ruin, which are the Dark World counterpart of the Great Swamp in Hyrule; they contain its second dungeon, the Swamp Palace.
** Goponga Swamp from ''[[VideoGame/TheLegendOfZeldaLinksAwakening Link's Awakening]]''.
** The entire Southern Swamp region of Termina in ''[[VideoGame/TheLegendOfZeldaMajorasMask Majora's Mask]]''. The water is poisoned and most of the vegetation appears to be either dead or dying. Situated within its central mountain is Woodfall, a twisted bog that contains one of the game's four dungeons. Woodfall Temple itself also conforms to this sort of atmosphere.
** The Swamp from ''[[VideoGame/TheLegendOfZeldaFourSwordsAdventures Four Swords Adventures]]''. It serves as the second stage of the fourth level. Though it wasn't always the poisonous mire you trek through: it used to be a place of natural beauty before Vaati's power corrupted it, and it is seen back to normal in the ending.
** Castor Wilds from ''[[VideoGame/TheLegendOfZeldaTheMinishCap The Minish Cap]]'' barely qualifies due to its abundance of ropes (ie. the Zelda equivalent of snakes) and exotic theme music; is is, however, a textbook example of the BubbleGloopSwamp trope.
* In the ''VideoGame/{{Exile}}'' series and the remake, ''VideoGame/{{Avernum}}'', you are poisoned by walking through swampy terrain.
* BubblegloopSwamp from ''BanjoKazooie'' featured vicious piranhas.
* While the Black Marshes from ''Franchise/TheElderScrolls'' are not necessarily evil as well as the Bitter Coast from ''[[VideoGame/TheElderScrollsIIIMorrowind Morrowind]]'', they ''are'' inhospitable. Also, the Black Marshes are populated by [[LizardFolk Argonians]] who, despite being friendly and benevolent, are fiercely territorial and will never let the Empire rule them.
** The Shivering Isles expansion for ''[[VideoGame/TheElderScrollsIVOblivion Oblivion]]'', realm of Sheogorath the MadGod, also deserve mention, as it is split in two to represent the dual nature of madness. Dementia, the southern half of the isles represents the darker aspects of madness, and consists mostly of swampland.
** The southeast of ''[[VideoGame/TheElderScrollsVSkyrim Skyrim]]'' is also home to a wetlands/swamp region. There are no undead there, only lots and lots of eight-legged wildlife. Adjacent to it is the lovely town of [[WretchedHive Riften]].
* The new "Point Lookout" DLC for ''VideoGame/{{Fallout 3}}'' features a swamp filled with Hillfolk ready to murder you instantly. And it's also filled with Ghouls, Mirelurks, and Robots, all also ready to murder you.
** Not just hillfolk and ghouls, but the ''[[DemonicSpider goddamn hillfolk who automatically dole out 35 damage regardless of armor or stats in addition to their weapon's base damage, and Feral Reavers]]''.
** But to be fair, the swamp is only worse because there are dead trees blocking your view, aside from that everything in the DLC could be considered normal for the wasteland. Also the place was apparently fairly nice, even if there were corrupt bastards in it, before the bombs fell, partially subverting the trope.
* ''VideoGame/KingsQuestMaskOfEternity'' had a subversion. The Swamp was actually a fairly decent place to live and had a couple of huts and benevolent beings. Unfortunately, a great cataclysm takes place in the opening scene, [[TakenForGranite turning human beings to stone]] and causing the Swamp Witch to take over, bringing a host of nasty monsters with her.
** ''King's Quest II: [[FanRemake Romancing the Stones]]'' has a straight example, complete with poisonous water and an Ominous Castle inside.
* ''Videogame/SecretOfEvermore'' had the Bugmuck, a swamp home to a gigantic (like the size of a small village!) bug carcass and bone dragons.
* ''Videogame/EarthBound'' features the Deep Darkness, a tropical swamp where wading in the deeper water actively saps your health. And by "deeper water," we mean "muck deep enough that our [[KidHero Child Heroes]] are totally submerged by it." So they're probably losing HP from having to hold their breath...
* ''VideoGame/Left4Dead2'' has the campaign "Swamp Fever" set in a zombie-infested swamp.
* The Black Morass in ''Videogame/{{Warcraft}} I'' is not evil per se, but it is where the orcs first came to Azeroth. The Swamp of Sorrows and Dustwallow Marsh in ''Videogame/WorldOfWarcraft'' are [[EverythingTryingToKillYou infested by]] dragons, [[GiantSpiders spiders]], crocodiles...
* The Mire of the Damned in ''Videogame/MightAndMagic VI'' is, well, you get the idea.
** Part III on the other hand gives us an entire island of swamp, including such wonderful places as the [[IDontLikeTheSoundOfThatPlace Minotaur Marsh, Shadowmire and Deathbog]]. It's also home to Swamp Town, a ghoul-infested pit. The best part of the island: There are a few squares of [[QuicksandSucks quicksand]]. Every turn you stay on them, two party members die. No HP loss, no status conditions, just death. And differently from M&M IV and V, III interprets ''turning around'' as the start of another turn...
* Wraithmarsh is a particularly good example - a desolate swamp that separates the town of Bloodstone from the rest of Albion in ''VideoGame/FableII''. Wraithmarsh was once the site of Oakvale, the Hero's hometown from the original game; it was destroyed as part of Reaver's bargain with the [[UltimateEvil Shadow Council]]. Run-down buildings, skeletal statues and graves can be found throughout Wraithmarsh, which is haunted by [[NightoftheLivingMooks Hollow Men]], [[TheFaceless Wraiths]] and the occassional [[OurWerewolvesAreDifferent Balverine]] and [[AllTrollsAreDifferent Troll]]. It is also the home of the Demon Door to [[ParanoiaFuel Terry Cotter's Army]], easily one of the freakiest areas in all of Albion. A trek through Wraithmarsh is accompanied by a haunting soundtrack; even after the Hero gets strong enough to overcome anything Wraithmarsh has to throw at him, it can still give you the heebie-jeebies.
* ''Videogame/RuneScape'' both averts this and plays it straight: there's a swamp just south of the starting town that's populated by goblins and giant rats, but they won't attack you; in fact, several quests involve locations in this swamp itself, including one of the beginner quests in the starting town itself. Once you progress farther, though, you encounter the land of Morytania, which is arguably one big swamp full of [[OurWerewolvesAreDifferent werewolves]], [[OurVampiresAreDifferent the Vyrewatch]], and other [[TheUndead restless dead]], all out to kill you. Special mention goes to the Mort Myre area, though, which is full not only of spooky pools and acid-spitting snails, but also Ghasts, which are intangible and sneak up behind you to spoil the food you're carrying. If, by chance, you don't have any food or a particular plot item, they'll instead spoil [[ToServeMan your own flesh]] (i.e., your HitPoints).
* The two swamps in ''Videogame/{{Summoner}}'' are both pretty evil places, though in different ways. One was actually a lovely forest kingdom before the reigning monarch decided to halt HumanSacrifice[=s=] to the local river god, at which point every single person was [[TakenForGranite turned to stone]] and the entire place allowed to degenerate into swampy monster-infested ruins. The other is filled with a malign fog which inflicts a nasty [[StandardStatusEffects Status Effect]] on the entire party, and is the home of TheFairFolk; even so, it's perhaps not quite entirely evil, because it provides protection of sorts for a sacred shrine.
* The Korcari Wilds in ''VideoGame/DragonAgeOrigins'' may or may not qualify - it is a fairly unpleasant place, but as for evil it is nothing compared to many other places such as the Darkspawn-infested Deep Roads or the Bone Pit. [[IDontLikeTheSoundOfThatPlace Blackmarsh]], in the expansion, plays this trope entirely straight.
* The second and third stage of the Valley of Defilement from ''DemonsSouls''. Lots of Goddamned Bats in the shape of gigantic insects, freaky mutants with disease literally pouring from their flesh, gigantic trolls that deal massive damage per hit and aborted fetuses. Did we mention that staying too long in the swamp poisons you? And that you are reduced to a crawl when you are in it? And that enemies, especially the aforementioned powerful ones, are not hindered by such a thing? Have fun.
* Dooms Mire from BrutalLegend. there's a grove of hanging-trees about midway through, so if people become lost they can commit suicide instead of drown or rot. Or get eaten by laser-shooting panthers.
* In {{Halo}}: Combat Evolved, the area where you first encounter the Flood is located in a swamp.
* In the {{Neopets}} console game, ''The Darkest Faerie'', the village of Bogshot is located in a swamp that houses the Plague Serpent Kastraliss, a minion of the titular Darkest Faerie. Everyone in the village comes down with disease when the swamp is turned by the Darkest Faerie's magic.
* Splot in VideoGame/{{Bug}}! Oh dear god, [[ThatOneLevel Splot]]. The water [[SuperDrowningSkills instantly killed Bug]]- never mind MercyInvincibility, you still die. There were many [[DeathCourse unforgiving sections]] (bubble jumping comes to mind). Enemies were either [[GoddamnedBats annoying]] ([[{{Fartillery}} farting]] stink bugs, swamp flies, mozzies) or [[DemonicSpiders dangerous]] (frogs, ''literal'' [[ShockAndAwe lightning bugs]], [[MoreDakka machine-gunner]] snails MadeOfIron).
** And the boss? A [[http://www.mobygames.com/images/shots/l/413988-bug-sega-saturn-screenshot-splot-boss.png swamp worm]], who you were forced to fight while standing on a small platform (and an even smaller one later) surrounded by water. Getting hit would knock your character back into the water for instant death. ThatOneBoss, indeed.
* ''Castlevania II'' featured swamp levels. The [[ClassicVideoGameScrewYous fun unit]] is that when in the water, you have to jump out to move.
* The FinalBoss of FireEmblemGaiden is fought in a swamp. Units standing on the swamp tiles take some damage when their army's phase start. The FinalBoss in question is an [[EldritchAbomination "Dark God"]] named [[http://fireemblem.wikia.com/wiki/Doma Doma]].
* HeroesOfMightAndMagic I and II have the Warlocks, who seem to be vaguely on the side of evil, prefer hanging out in swamps. III, on the other hand, have the swamp be home to the Fortress, which is neither good nor evil. In IV swamps are again associated with a vaguely-evil faction (Chaos).
* Blighttown in ''DarkSouls'' is the [[DemonsSouls Valley of Defilement]] reborn. The game throws you a bone at least in the form of artifacts like the Rusted Iron Ring and the Poisonbite Ring that makes trudging through the swamp much easier. ''If'' you know where to find them.
** Also subverted in the lore. [[AllThereInTheManual According to item descriptions]], [[PlayingWithFire Pyromancers]] are mostly found in a location titled "The Great Swamp". Note that Pyromancy, like [[SuperEmpowering Miracles]] and [[SufficientlyAnalyzedMagic Sorcery]], is just another type of magic. ([[FantasticRacism Not that Pyromancers get much respect]].)
* Sierra's ''ConquestsOfTheLongbow' PlayedWith the trope in the Monastery in the Fens. While the Fens were not inherently evil--at least not in any obvious way--the black-robed monks that lived there almost definitely were.
* Episode 3 of Apogee's ''VideoGame/MonsterBash'' has two [[ThatOneLevel nightmarishly difficult]] swamp levels which result in many a player resorting to the extra lives cheat.
* The Hydra Marshes in ChronoCross are hazardous. Just stepping into the water without proper gear will hurt you.
* ''VideoGame/TheWitcher'' has the swamp near Vizima in chapters two and three that runneth over with undead and all sorts of monsters. Ironically, with a single notable exception (the Order and the Scoia'tel clash), the quests you get in the swamps are usually much less morally ambiguous and dark as in the HubCity of Vizima itself--because the swamp is so evil, you don't have to question your every move, and just kill everything that moves.
* Fallenmire from ''VideoGame/SandsOfDestruction''. Upon arriving to the place, [[TheHero Kyrie]] discovers, to much to his horror, that there are skeletons floating around the wetlands. [[BadassAdorable Taupi]] explains that the ferals forced their humans slaves to work to their graves on a nearby mine without caring about the dangers of mining in such a hazardous area.
* Lemures Marsh from ''VideoGame/TalesOfInnocence''. As soon as Ruca and Co. step on the area, they're ambushed by zombies. The party deduce those are the corpses of the soldiers fighting in the Northen Battlefield that were brought here thanks to the rains. Then we have the boss of the marsh, the Mud Undead who is revealed [[spoiler: to be the souls of people that couldn't reincarnate and became trapped inside that monstrosity.]]
* There are swamps in both default maps in ''VideoGame/DungeonSiege'' as well as the expansion map. ''III'' features a return to the swamp from the original singleplayer map, although several things have changed in the centuries since. All of these swamps are dark, misty places filled with all kinds of slimy, rotting creatures. The swamp revisited in ''III'' is also home to the Ur-Shamesh, or First People, a race of seemingly primitive magic-users who are generally hostile to anyone who enters the swamp.
* Nibelhenne Swamp from ''VideoGame/TheWitchAndTheHundredKnight'', a BubblegloopSwamp so deadly that the stench alone can incapacitate or even kill and those covered in it's muck can melt a person instantly. Very few can enter the swamp perfectly fine with no protection, one of which is it's owner and main character, the Swamp Witch Metallia. Unfortunately, she wants to expand the swamp beyond it's borders and gains the means to do it. [[spoiler:It's later revealed that the swamp is the remains of an EldritchAbomination and the muck contains dense mana, meaning those who die from it are actually experience PhlebotinumOverload. Metallia can survive in it because she was born from the swamp, which also allows her to use the mana in the swamp muck to it's full potential.]]
* DragonTavern has the aptly named Dreadmarsh, which is home to various undead monsters, mud, dangerous insects, fearsome giants, mud, deadly traps, lizard people and mud. The only reason people even visit the place is to loot the many treasure-filled ruins.
* Mz. Ruby's level in the first SlyCooper game is a swamp in Haiti, complete with undead, swamp monsters, and dark Voodoo magic.
* The Blood Marsh near Westmarch in the ''VideoGame/DiabloIII'' expansion, ''Reaper of Souls'', is like this as a result of [[spoiler:the evil BloodMagic employed by [[WickedWitch Adria]] corrupting the place]]. Apart from the unusually aggressive fauna (Boggits, Bogans, giant shrieker bats and the occasional Maggot Brood), there's also the pools themselves, which are quite poisonous and can kill a traveler quite easily.
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[[folder: Web Comics ]]

* {{Roza}} [[http://www.junglestudio.com/roza/?date=2011-05-18 thinks otherwise, and gets an explanation.]]

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[[folder: Web Original ]]

* The ''[[TheSlenderManMythos Slender Man's]]'' home dimension is described by some to be a marshy DarkWorld.

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[[folder: Western Animation ]]

* The Foggy Swamp from ''WesternAnimation/AvatarTheLastAirbender'' is initially depicted not as evil but definitely as very creepy (visions of the dead, scary noises, etc.). Meanwhile, the residents of the swamp are hunting the main characters for dinner. Though once all the misunderstandings are sorted out, it's not that bad a place.
* ''TheMagicSchoolBus'' does an episode about wetlands where the kids start by believing in this trope but eventually learn the importance of a swamp in the ecosystem.
* On ''[[SuperFriends Challenge of the Superfriends]]'', the LegionOfDoom is headquartered in "The Swamp." It is always referred to as "The Swamp," in such a way as to imply that there is only the one swamp in the world (in fact, at least one episode contains a minor plot hole if you assume that there ''are'' other swamps). In one episode, the Legion hassles a witch they spot in The Swamp, only to discover that she works for an entity even more evil than they are, who also dwells in The Swamp.
* Froggy Bottom Bog from WesternAnimation/MyLittlePonyFriendshipIsMagic isn't so bad. Just avoid the giant hydra that lives there.
* Invoked metaphorically in-universe in TheSimpsons episode "Mr. Lisa Goes to Washington," in her essay "Cesspool on the Potomac."

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[[folder: Real Life ]]

* The Great Dismal Swamp, in the eastern USA. Or the name at least. It actually isn't evil. It isn't even that ugly.
* Vasyugan Swamp, located in south-western Siberia. It occupies 53,000 km
. You don't want to get lost there, believe me.
* Two of the visible markings on the Moon were named "Palus Putredinis" and "Palus Epidemiarum". Although they're not really swamps, names like "Marsh of Decay" and Marsh of Epidemics" show that astronomers aren't immune to this trope.
* A notable aversion: If you were a slave in the antebellum South, the swamps of Florida were home to [[LaResistance the Seminoles]]. Of course, this could also qualify as an exploitation, since nobody would venture into Seminole territory because SwampsAreEvil.
** Alternately, no one ventured into Seminole territory because the Seminoles were lethally capable of defending themselves in swampy terrain terribly unsuited to major offensive operations. The American Government did ultimately make the attempt to dispossess them after their "success" with the Cherokee in Georgia. It is believed that the Second Seminole War led to more American casualties than there were Seminole warriors arrayed against them (contemporary Andrew Jackson estimated around 900 total and modern historians treating 1400 as a maximum possible amount, with the Americans losing 1600 soldiers and uncounted settlers). Though an American victory, it was Pyrrhic at best when the bodies were counted and the economic costs made apparent, and in spite of everything, hundreds of Seminoles still remained in the swamps at the conclusion of hostilities, a source of significant pride to modern Florida Seminoles. An aversion by any measure, as far as escaped slaves and the Seminole alike are concerned.
* If some accounts of the [[http://en.wikipedia.org/wiki/Battle_of_Ramree_Island Battle of Ramree Island]] are any indication, saltwater crocodiles were responsible for killing five hundred Japanese soldiers out of a group of about nine hundred that tried to escape from British forces through a swamp.
* Heck, even major cities like [[http://hauntsandhistory.blogspot.com/2010/05/legend-of-ape-boy.html Philadelphia]] [[http://en.wikipedia.org/wiki/John_Heinz_National_Wildlife_Refuge_at_Tinicum aren't]] [[http://books.google.com/books?id=bfaultPxl18C&pg=PA69&lpg=PA69&dq=ape+boy+tinicum&source=bl&ots=Tzc1avs2d2&sig=4MixjRCR6sYZY5Jc-T9qZv7Saq0&hl=en&sa=X&ei=ZOTvU5PvE4P5yQTopYIo&ved=0CC4Q6AEwAg#v=onepage&q=ape%20boy%20tinicum&f=false immune]] to this.

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