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{{Infobox archetypearchseries| image = WormBait-TF04MADU-JPEN-VG-artwork.png| caption = "[[Dungeon Worm]]" and two "[[Worm Token]]s" in the artwork of "[[Worm Bait]]"| ja_name = ワーム| romaji = Wāmu| zh_name = 蟲| fr_name = Ver| de_name = Wurm| it_name = Verme| ko_name = 웜| ko_romanized = Wom| pt_name = Verme| es_name = Gusano/a| es_name2 sets = Gusano/a* [[Starter Deck: Kaiba]]* [[Pharaoh's Servant]]* [[Labyrinth of Nightmare]]* [[The Lost Millennium]]* [[Structure Deck: Invincible Fortress]]* [[Strike of Neos]]* [[Hidden Arsenal]]* [[Yu-Gi-Oh! 5D's Tag Force 4 promotional cards]]* [[The Shining Darkness]]* [[Hidden Arsenal 2]]* [[Hidden Arsenal 3]]* [[Storm of Ragnarok]]* [[Code of the Duelist]]| sets tcg =* [[Tournament Pack: 3rd Season]]* [[Dark Beginning 1]]* [[Tournament Pack 5]]* [[Dark Beginning 2]]* [[Dark Revelation Volume 3]]* [[McDonald's Promotional Cards 2]]* [[Phantom Darkness]]* [[Gold Series]]* [[Duel Terminal 1]]

* [[BeginnerLegendary Collection 3: Yugi's Edition 1World Mega Pack]]* [[BeginnerLegendary Collection 4: Joey's Edition World Mega Pack]]* [[Starter Deck: Yugi Reloaded]]* [[War of the Giants: Round 2]]* [[War of the Giants Reinforcements]]* [[Battle Pack 3: Monster League]]* [[Code of the Duelist]]* [[Legendary Duelists: Ancient Millennium]]* [[Star Pack VRAINS]]* [[2018 Mega-Tin Mega Pack]]* [[Battles of Legend: Armageddon]]| ocg =

* [[Booster ChronicleEX Starter Box]]

* [[Dark Beginning EX-R Starter Box]]* [[Thousand Eyes Bible]]* [[Spell of Mask]]* [[Booster Chronicle]]* [[Structure Deck: Kaiba]]* [[Structure Deck: Pegasus]]* [[Duelist Legacy Volume.3]]* [[Duelist Legacy Volume.4]]* [[Structure Deck: Kaiba Volume 2]]* [[Structure Deck: Marik (OCG)]]* [[Beginner's Edition 1]]* [[Dark Beginning Beginner's Edition 2]]* [[Dark Revelation Expert Edition Volume 3]]

* [[Yu-Gi-Oh! 5D's Tag Force 4 Complete Tag Duel Terminal promotional card]]* [[Tournament Pack 2010 Vol.2]]* [[Beginner's Edition 1(2011)]]* [[Beginner's Edition 2 (2011)]]

* [[Duelist Legacy Volume.3Duel Terminal Chronicle 1 - Chapter of Awakening]]* [[Duel Terminal Chronicle 2 - Chapter of Chaos]]* [[Duelist Legacy Volume.4V Jump Spring 2016 subscription bonus]]* [[EX Starter BoxTournament Pack 2017 Vol.4]]* [[EX-R Starter BoxDuelist Pack: Legend Duelist 2]]| korea =

* [[Expert Edition VolumeExpansion Pack Vol.3]]* [[Extra Pack]]* [[Extreme Victory]]* [[Gold Series]]* [[Gold Series 3]]* [[Gold Series 4: Pyramids Edition]]* [[Hidden Arsenal]]* [[Hidden Arsenal 2]]* [[Hidden Arsenal 3]]* [[Structure Deck: Kaiba]]* [[Labyrinth of Nightmare]]* [[Legendary Collection 3: Yugi's World Mega Precious Pack]]* [[Structure Deck: Marik (OCG)|Structure Deck: Marik]]* [[McDonald's Promotional Cards 2]]* [[Structure Deck: Pegasus]]* [[Phantom Darkness]]* [[Pharaoh's Servant]]* [[Spell of Mask]]* [[Starter Deck: Kaiba]]* [[Storm of Ragnarok]]* [[Strike of Neos]]* [[Structure Deck: Invincible Fortress]]* [[Structure Deck: Kaiba Volume 2]]* [[The Lost Millennium]]* [[The Shining Darkness]]* [[Thousand Eyes Bible]]* [[Tournament Pack: 3rd Season]]* [[Tournament Premium Pack 5]]* [[Vol.5]]* [[Yu-Gi-Oh! 5D's Tag Force 4 promotional cards]]* [[Beginner's Edition 1 (2011)11]]| anime = * [[Yu-Gi-Oh! second series (anime)|Yu-Gi-Oh!]]

| manga =

 "'''Worm'''" (ワーム ''Wāmu'') is a large [[archetype]] of [[Monster Card|monsters]], the first support for which was introduced in ''[[Hidden Arsenal]]''. Unlike other archetypes, "Worm" is divided between two entirely distinct play styles, only one of which has archetype support. Additionally, several other unrelated cards, such as "[[Worm Drake]]" and "[[Dimensionhole]]" are in this archetype. The [[LIGHT]] [[Reptile]]-[[Type]] "Worm" monsters were introduced as part of the early [[Duel Terminal]] sets. They are used by [[Callisto]] in ''[[Yu-Gi-Oh! 5D's World Championship 2009: Stardust Accelerator]]''. The [[Insect]]-Type "Worm" monsters have effects that [[mill]] the opponent's Deck. They are used by [[Tetsu Trudge|Trudge]] during his time as a [[Shadow Drone]] in the ''[[Yu-Gi-Oh! 5D's]]'' anime. "[[Dimensionhole]]" (''"Worm Hole"'' in Japanese) and "[[Electric Virus]]" are also "Worm" cards because they have 「ワーム」 in their Japanese names. ==Insect-Type Worms==These Worms are a series of Insect-Type monsters, which focus on milling the opponent's Deck. Visually, they resemble caterpillars and centipedes. ===List of Insect-Type Worms==={{#ask: card query|[[Archseries::Worm]] [[Type::Insect]] [[Class 1::Official]] |?Card type |?ATK |?DEF |?Level |?Attributemedium=official}} 

Having Insect support cards like "[[Lair Wire]]" and "[[Insect Neglect]]" while also having "[[Doom Dozer]]" and "[[Aztekipede, the Worm Warrior|Aztekipede]]" in your Deck means you will rely heavily on having Insect-Type monsters in your Graveyard which you can remove from play. Therefore, it would be a good idea to use cards that mill both players to steadily replenish your Graveyard's stock of Insect-Type monsters. Cards like "[[D.D.R. - Different Dimension Reincarnation]]" can be used to bring back monsters like "Shield Worm" and "Warm Worm" in late game to force your opponent to send away even more cards. 

 Since you need to send insect monsters to the Graveyard anyways, it maybe a good idea to use some that benefit you from being in the Graveyard, like "[[Skull-Mark Ladybug]]". This Deck concentrates on using "[[Warm Worm]]", "[[Needle Worm]]" and "[[Shield Worm]]" to mill your opponent's Deck. "[[Chainsaw Insect]]" is used for a beatstick and to force your opponent to draw. "[[Doom Dozer]]" and "[[Aztekipede, the Worm Warrior]]" can be used with "[[Robbin' Zombie]]" to send more cards from the Deck to the Graveyard. "[[Assault on GHQ]]" can be used on the used up "Needle Worm" or on a "Warm Worm". 

* [[Insect KnightShiny Black "C" Squadder]]* [[Neo Bug]] 

* [[GokiponGokipole]]* [[Howling Resonance Insect]]* [[Rescue Rabbit]]|flip monsters =

* [[Creature SwapCocoon of Ultra Evolution]]

* [[Insect NeglectFoolish Burial]]* [[Giant Ballpark]]

 ==Reptile-Type Worms==These Worms are a collection of [[LIGHT]]-[[Attribute]] [[Reptile]]-[[Type]] monsters which focus heavily on [[Flip effect]]s. They were introduced in ''[[Duel Terminal - Synchro Awakening!!]]'' and even have their own set, ''[[Duel Terminal - Invasion of Worms!!]]''. The name of each Worm begins with a different letter of the alphabet, including all letters from A to Z. Their effects also seem to get more complicated as they progress in the alphabet. For example, "[[Worm Apocalypse]]" has an effect only a few words long. However, "[[Worm Yagan]]'s" effect is 56 words long and much less straightforward. "[[Worm Zero]]", the "boss" monster of Worms features several powerful effects and is a Fusion Monster. 

{{See also|Master Guide 3 card storylines#File Number 01: Duel Terminal History (Original War)|Duel Terminal Master Guide card storylines#The "Worms" Appear|Master Duel card storylines#Alliance for Justice}}The storyline establishes that the "[[Ally of Justice]]" monsters were created specifically to combat the "Worms" (specifically the LIGHT Reptile-Type "Worms") through a joint effort of 4 Duel Terminal clans. This is apparent through several crossover cards within the "Ally of Justice" series. Later on in the battle, captured Worms were converted into "[[Ally of Justice]]A.O.J." monsters (i.e., "[[Ally of Justice Enemy Catcher]]"), which led to the "Mist Valley" clan falling out of favor with the other alliance members. They halted support for the "Ally of Justice" project and continued fighting the battle alone, though this decision was short-lived. The legendary "Dragunity" warriors returned to defend the Mist Valley, once their home, and joined forces with the clan taking up residence there. The greatest weapon of the "Worms" was "[[Worm Zero]]", which traded the threat of endless waves of "Worms" for the crushing presence of "Zero", whose arrival on the Duel Terminal world was enough to severely disturb time and space.

====Appearance====Visually, they resemble hideous alien creatures of a predominant single color, and often possess lipless toothy vertical mouths. However, they also incorporate biological features from real-world [[wikipedia:Worm|Wormsworms]], including transparent skin and external mucus. ===Members=Relation to Latin alphabet==Each one of the 26 ''[[Duel Terminal]]''-related "Worm" monsters possesses a name that starts with a different letter of the alphabet, ranging from "[[Worm Apocalypse|Apocalypse]]" (the weakest) to "[[Worm Zero|Zero]]" (the strongest). <div class="plainlist" style="column-width: 10em; column-count: 7;">* "[[Worm Apocalypse|'''A'''pocalypse]]"* "[[Worm Barses|'''B'''arses]]"* "[[Worm Cartaros|'''C'''artaros]]"* "[[Worm Dimikles|'''D'''imikles]]"* "[[Worm Erokin|'''E'''rokin]]"* "[[Worm Falco|'''F'''alco]]"* "[[Worm Gulse|'''G'''ulse]]"The names of all * "[[Worm Hope|'''H'''ope]]"* "[[Worm Illidan|'''I'''llidan]]"* "[[LIGHTWorm Jetelikpse|'''J'''etelikpse]] "* "[[ReptileWorm King|'''K'''ing]]-"* "[[TypeWorm Linx|'''L'''inx]] "* "[[WormMillidith|'''M'''illidith]]" monsters begin with the word * "[[WormNoble|'''N'''oble]]" followed by another word. The subsequent release of new cards are alphabetical. All LIGHT Reptile-Type * "[[Worm monsters were originally introduced in Opera|'''O'''pera]]"* "[[Duel TerminalWorm Prince|'''P'''rince]]."* "[[Worm Queen|'''Q'''ueen]]"{{#ask: * "[[Archseries::WormRakuyeh|'''R'''akuyeh]] "* "[[Type::ReptileWorm Solid|'''S'''olid]] "* "[[Attribute::LightWorm Tentacles|'''T'''entacles]] "* "[[Class 1::OfficialWorm Ugly|'''U'''gly]] "* "[[Worm Victory|?Card type '''V'''ictory]]"* "[[Worm Warlord|?ATK '''W'''arlord]]"* "[[Worm Xex|?DEF '''X'''ex]]"* "[[Worm Yagan|?Level '''Y'''agan]]"* "[[Worm Zero|?Lore}}'''Z'''ero]]"</div>

Worms are one of the largest larger archetypes (in terms of number of members), but they currently have only 2 non-monster support cards: "[[Worm Call]]" and "[[W Nebula MeteorMeteorite]]". "[[W Nebula Meteor]]" can provide you with excellent draw power as well as the ability to use and recycle the Worm's effects. It is also the easiest method to Special Summon "[[Worm Victory]]", "[[Worm King]]", and "[[Worm Queen]]" from your Deck. "[[Worm Zero]]" potentially boasts the highest ATK of all "Worms" (with "[[Worm Victory]]"), gaining 500 ATK for every Reptile-Type Worm used for its fusion, and gains powerful effects determined by how many [[Fusion Material]]s were used. "[[Worm Queen]]", "[[Worm Cartaros]]", "[[Worm Xex]]" and "[[Worm Prince]]" have powerful Deck thinning and monster searching effects. The effect of "Worm Queen" is a toolbox effect, similar to that of "[[Lonefire Blossom]]". The Deck thinning effect of "Worm Xex" is similar to that of "[[Armageddon Knight]]". The Deck revolves around abusing the effects of "[[W Nebula Meteorite]]". Opening with with "[[Worm Xex]]" or "[[Worm Cartaros]]" along with this card can yield huge card advantage early on to make up for the Deck's relatively slow play. If you Summon "[[Worm Yagan]]" along with "Xex", you can activate "Nebula" on your opponent's turn, using "Yagan" to return one of their monsters to their hand. During the End Phase, you get to draw 1 card for each Reptile monster flipped face down by "Nebula" and can Special Summon a Level 7 or higher LIGHT Monster (notably "[[Worm King]]", "[[Worm Queen]]", or "[[Worm Victory]]"). 

* [[Worm CartarosErokin]]* [[Worm DimiklesGulse]]* [[Worm Illidan]]

* [[Master of Ham]] (as a target for "Instant Fusion")|xyz monsters =

* [[Raika no Kurokamitsuki]]* [[Ragnaraika Chain Coils]]|normal spells =* [[Book of Taiyou]]* [[The Shallow Grave]]* [[Instant Fusion]]* [[Viper's Rebirth]]|continuous spells =

* [[Future FusionPhoton Lead]]* [[SolidaritySol and Luna]] (if using only Reptiles)* [[Viper's RebirthOgdoadic Daybreak]] (if using only Reptiles) |normal traps =

* [[Destructive Daruma Karma Cannon]]* [[Ragnaraika Hunting Dance]]|continuous traps =* [[World Legacy PuppetPawns]]