Duelist Kingdom Promo Duel Disk During the Duelist Kingdom arc, Seto Kaiba developed the first generation Duel Disk. 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 Deck, Graveyard, LP counter and Field, the first Duel Disk system had two components joined by a retractable cable.The wrist component stores the Deck, Life Point counter and the actual disk component holds five cards. Users would load the cards as explained later into the disk and throw it like a yo-yo, causing a hologram to be projected from it.
Battle City Duel Disk Unlike the previous Duel Disk, it did not need to be thrown. When it first appeared in the anime, sealers flew out of the Duel Disk to the sides of the Dueling area to produce the Solid Vision holograms. These were removed later. In the manga the holograms were projected straight from the Duel Disk itself. Directly underneath each monster slot is another slot for Spell and Trap Cards. If a Duelist was 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 Card. The center of the disk includes the Main Deck and Graveyard slot and Life Point counter. The bottom part of the Disk, which goes around the user's arm, also contains a retractable cable that could be attached to Dueling Arenas if one player opted not to use a Duel Disk.
Chaos Duel Disk The Chaos Duel Disk is a Duel Disk designed for the members of the organization called Doma in the Waking the Dragons arc. Functionally, it is identical to the Battle City Duel Disks, other than the fact that the field area of the standard version can retract and expand as opposed to being split in half, while the Orichalcos Soldier version is built into their arm-mounted weapons.