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==Yu-Gi-Oh!==
===DiaDhank===
[[File:DiaDhank.jpg|thumb|right|250px|[[The Sacred Guardians]] readying their DiaDhanks.]]The Duel Disk is based on an ancient Egyptian artifact called a DiaDhank, a golden device worn similarly to the Duel Disk that uses the user's Ba (Life Force) to summon Ka (spirit monsters) and [[control]] them.
Unlike the Duel Disk, the DiaDhank can only control up to 3 [[Monster Cards|monster]]s at once. In place of the Life Point counter is [[the Eye of Wdjat]], which contains a glowing yellow meter that measures the user's Ba, as the disk measures life points.
Since [[summon]]ing monsters drains life force, the losing duelist faints or dies. It is heavily implied only Millennium Item bearers can use a DiaDhank.
The design of the second Duel Disk suggests that [[Seto Kaiba]] designed it based on memories from his past life as [[Priest Seto]], who used the Millennium Rod.
The Academy Duel Disk also seems to take elements from the DiaDhank, as its shape when in standby mode looks like the blades on the DiaDhank. [[Yubel (character)|Yubel]]'s dueling arm looks like a demonic version of the ancient device as well.
[[Shimon Muran]] describes a DiaDhank as a device use for calling for [[Shadow Creatures]] that are sealed away in [[Stone Tablets]].
===Duel Disk (version 1)===
[[File:Duel Disk 1.PNG|thumb|right|250px|Duel Disk 1]]
During the [[Duelist Kingdom]] arc, [[Seto Kaiba]] developed the first generation duel disk prototypes as a means of countering [[Maximillion Pegasus]]' mind reading techniques.
Seto gambled that Pegasus needed face to face contact for his mind reading to work so as a feature of the disks, holographic projections of the cards obstruct the duelists from seeing each other.
This duel disk was physically and functionally different than the ones that would follow. Where the others are a single piece construct which houses the [[Main Deck|Deck]], [[Graveyard]], [[Life Points|Life Point]] counter and [[Playing Field|Field]], the first Duel Disk system had 2 components joined by a retractable cable.
The wrist component houses the Deck, Life Point counter and the actual disk component holds 5 cards. Users would load the cards as explained later into the disk and throw it like a [[Wikipedia:Yo-yo|yo-yo]], causing a hologram to be projected from it.
===Duel Disk (version 2)===
[[File:Duel Disk 2.PNG|thumb|left|250px|Duel Disk 2]]
Prior to the [[Battle City]] Tournament, [[KaibaCorp]] developed the second generation Duel Disk, the first one to be released to the public. Issued to participants of [[Battle City]], this Disk played the game according to the new revisions (which make it closer to the real world version.)
Unlike the previous Duel Disk, it did not need to be thrown (In the [[Yu-Gi-Oh!]] anime, sealers flew out of the Duel Disk to the sides of the dueling area. These disappeared in [[Yu-Gi-Oh! GX]]). When in use, it resembled an arm blade. Monsters that are in play are placed on the 5 slots on the blade.
Directly underneath each Monster slot is another slot for [[Spell Cards|Spell]] and [[Trap Cards]]. If a Duelist were to activate a [[Set]] card, they would activate a button on the round portion of the disk. Another slot can open on the front end of the disk that is used for the [[Field Spell Cards|Field Spell Card]].
The center of the Disk includes the [[Main Deck|Deck]] and [[Graveyard]] slot and [[Life Points|Life Point]] counter. The bottom part of the disk (the part that goes around an user's arm) also contains a retractable cable that could be attached to [[Dueling Arena]]s if one player opted not to use a Duel Disk. Ever since their introduction, almost all duels were conducted with these or with the later introduced [[#Chaos Duel Disk|Chaos Duel Disk]].
In the manga, both magic and Trap Cards were placed on the same slots for monsters but in the anime this is improved by having a seperate set of slots for magic and traps under the duel disk.
Also in the anime, 2 holographic devices fly from the disk and set themselves on each side of the duel space to create the holograms for the monsters. While in the manga the holograms are projected straight from the duel disk itself.
In [[Yu-Gi-Oh! 5D's]], This version of the Duel Disk is shown being used by citizens of [[Satellite]], indicating that this model has become obsolete, replaced with the more modern versions shown in GX as well as the [[D-Wheel]] and other Duel Disk versions that are shown.
Also, the protagonist of 5D's, [[Yusei Fudo]], is shown to remove a duel disk from his D-Wheel which has a startling resemblance to this version, possibly indicating that he has modified the obsolete model for use with his D-Wheel.
It looks different to the Battle City disk in that it resembles a scythed blade. It is believed to be modeled after the scythes on the armour of the [[Orichalcos Soldier]]s.
[[File:Mattel Chaos Disk.jpg|thumb|left|Mattel's Chaos Duel Disk]]
Like the Duel Disk 2, The company [[Wikipedia:Mattel|Mattel]] manufactured replicas of the Chaos Duel Disk for use with the real TCG, however the same flaws in the Battle City disk.
These include not being able to use card protectors, lack of a [[Extra Deck Zone]] and not being able to have more life points than 9990 even though a card effect such as "[[Solemn Wishes]]" can boost your [[Life Points]] beyond this.
Therefore in order to calculate the user's [[Life Points]] if they exceed this the user must use some way to keep track such as a calculator. It also folds in different, instead of the front tip folding into the center, the monster zone closest to the [[Field Card Zone]] is visible.
In the anime, the Chaos Duel Disk folded in on itself until the [[field]] was completely folded into the hinged 'spell trigger' part of the disk and then folded into the central part of the disk, creating a compact form. The toy is much the same, but cannot fold all the way as the anime disk can, but instead leaves the first 2 card spaces out.
The hinge on the toy is the whole of the first and second card spaces, which pushes to the back of the central part and though not as compact as the anime Chaos disk, it is still the most compact and light-weight of the toy duel disks.
[[File:Mattel Academy Disk.jpg|thumb|left|Mattel's Academy Duel Disk]]
As with the Duel Disk and Chaos Disk, the toy company Mattel made replicas of the Duel Academy Disk. They fixed one of the main problems of the Disks in resizing the card zones, along with Deck and Graveyard to fit cards with protective sleeves without problems. Although , it can only hold 39 cards with sleeves. Many of the other problems remained.
* No place for [[removed from play]] cards and the [[Fusion Deck]].
These Second Generation Academy Duel Disks are used by Ra Yellow students.
[[File:Academy Disk V2 Obelisk Blue BETTER.jpg|thumb|left|The upgraded version, with [[Obelisk Blue]] colors. ]]
* Academy Duel Disk (version 2) - Obelisk Blue
These Second Generation Academy Duel Disks are used by Obelisk Blue students.
Many characters who no longer attend Duel Academy (such as [[Aster Phoenix]] and [[Zane Truesdale]] ) continue to use the silver style Academy Duel Disk. The change is cosmetic only and the Disks still retain the exact functionality of the original Academy Duel Disks.
In November 2007, a real-world version of the red-trimmed [[Slifer Red]] disk was also produced in Japan, known as [[Academy Duel Disk Osiris Red]] and came boxed with several booster packs and [[Academy Duel Disk Osiris Red Promos|promotional cards]].
====Duel Coats====
{| border="1" cellspacing="0"
|Duel Coat - A different version of the Duel Disk. It is used primarily by both [[Vellian Crowler]] and [[Jean-Louis Bonaparte]]. The latter's has a wheel attached to its underside to compensate for his short stature. Unlike many other Duel Disks, the card platform is completely separate from the [[Main Deck|Deck]] and [[Graveyard]] section.
In it's standby position, the card platform is slung across the back and carried by a strap, leaving both arms free. When active, the card platform is held in front of the body, much like a guitar.
The Deck and Graveyard are contained in a hub on the support strap, usually resting in the center of the duelist's chest. The [[Duel Coat]] also does not require the user to manually [[draw a card]], the disk will automatically eject a card into the duelist's hand during each [[Draw Phase]].
|[[File:JimCookDuelDisk.jpg|100px]]
|-
|[[Adrian Gecko]]'s Duel Disk - Adrian's Duel Disk appears to be a slightly modified Academy Disk with a blue inside & gray outline. In standby mode, rather than having the back three slots visible, only the back two slots are visible. The third/middle slot is hidden under the other two, so when Adrian activates it, the back two slots extend out to reveal the middle one.
|[[File:AdrianGeckoDuelDisk.jpg|100px]]
|}
|[[File:Sherry's Duel Disk.jpg|100px]]
|-
|[[Akiza Izinski]]'s new Duel Disk is purple with a dark red trim. Similar to Yusei's, when her disk is attached to her Duel Runner, it is positioned just below the dashboard. When not in use, the blade folds over the duel disk's base with the the outer four slots connected to the Duel Runner's steerer. While inactive for ground mode, the disk will connect to her Wrist Dealer and the blade will still slide over the duel disks blade, but the addition of the outer four slots contracting into the disk's base.
|[[File:Akiza's Hybrid Duel Disk.jpg|100px]]
|-
|[[Elsworth]]'s Duel Disk is black with an oblong base. Like Jack Atlas's Duel Disk, it holds all five card slots on one blade. It is shaped like a katana. In episode 110, it is shown that it contains a parachute. Like Sherry's it is a hybrid model.
|[[File:Mizoguchi Duel Disk.png|100px]]
|-
|[[Bruno]]'s Duel Disk, while in his Vizor persona, is shown in the trailer for [[Yu-Gi-Oh! 5D's Tag Force 5]]. It has a metallic-purple main base with a teal gem; but it's tray resembles a stealth bomber. Since the [[Monster Card Zone]]s are designed the same way as those on [[Delta Eagle|his duel runner]]; this may speculate if it is a hybrid model.|[[File:TG05-Vizor-Disk.jpg|100px]]
|-
|}
|[[File:RedDuelDisk.jpeg|100px]]
|-
|[[Mr. Armstrong]]'s Duel Disk is a black and dark gray version of the standard model with amber gems. This version is also used by [[Dragan]] during his ground duel against Jack. In some video games, guards in the jails also used this disk. This disk was obtainable in-game and was called the 'Jail Disk', suggesting that it may be a Sector Security-issue model.
|[[File:Takasu Duel Disk.jpg|100px]]
|-
|[[File:Ushio Duel Disk.jpg|100px]]
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|[[Dexter|Dexter]]'s]] Duel Disk is a dark teal version of the standard model with cerulean gems. It's been shown in [[Yu-Gi-Oh! 5D's World Championship 2010: Reverse of Arcadia]].
|[[File:Dexter's Duel Disk.jpg|100px]]
|-
|[[File:Heitmann's duel disk.png|100px]]
|-
|[[Syd|Syd]]'s]] duel disk is a black and dark-grey version of the standard model with purple gems.|[[File:Syd's duel disk.png|100px]]
|}
|[[File:SkeletonKnightDuelDisk.jpg|100px]]
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|The Duel Disks used in [[Crashtown]] are shaped like guns. The duelist who pulls first and puts his duel disk on his arm faster gets the first turn. they are slightly similar to Axel Brodie's duel disk. In English version, this Duel Disks are remodeled to look less violenceviolent.
|[[File:Kiryu CrashTown.jpg|100px]]
|}
