In-Depth Guide to D/D/D

Overview and History

D/D/D -Different Dimension Demons- is a Deck piloted by Declan Akaba/Akaba Reiji in the Yu-Gi-Oh! ARC-V anime, that takes real life science, history and mythology and puts it into a corporate structure. After the release of the first cards in the TCG in the booster set Dimension of Chaos back in 2015, the deck had a rough start because compared to the OCG, Konami TCG decided to swap the releases of the structure decks Pendulum Domination, which brought a lot of support for the deck, and Rise of the true Dragons, where Blue-Eyes players needed a single card from for the World Championships in 2016. After the release of Pendulum Domination the deck had 2 weeks to shine until the release of the booster set Raging Tempest, which brought us the Tier 0 Zoodiac format. After that, it became quiet around the deck until the release of the booster set Battle of Chaos in February 2022 which brought new support. With the release of the set Battles of Legend: Monster Mayham in June/August 2025 D/D/D got some new tools which help the consistency of the deck. This deck became the cover archetype of the booster set Doom of Dimensions which released in the TCG in September 2025 and brought some much needed new cards to put this deck back on the map.

D/D/D was once considered as one of the most difficult decks to master by many players but becames easier to understand with each wave of support. But each wave makes the deck also more resilient.

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Deck Strategy and Playstyle

The deck is very combo heavy and trys to set up multiple interuptions like Loading... or Loading... going first or to OTK the opponent when going second.

Core cards

Main Deck

D/D Savant Kepler

Loading... , named after the scientist Johannes Kepler, is the main normal summon of the deck. On normal summon it can either return an other D/D card from your field back to your hand or it can add 1 dark contract from your deck to your hand. The main purpose of Loading... is to add Loading... to your hand, which can add other combo pieces to your hand. On its own it is also a 1 card combo.

It's Pendulum Scale of 10 can also came in handy sometimes, but you need to watch out for it's drawback.

D/D Savant Copernicus

Loading... , named after the scientist Nicolaus Copernicus, is your Loading... and the other main normal summon of the deck. With it you can send cards like Loading... and Loading... from your deck to further extend or even start your combos. It is also an important part of another 1 card combo. Beeing played at 3 before, the card becomes less important and more of a search target than something you want to see in your opening hand.

It has a pendulum scale of 1 and it's Pendulum Effect can often times save you from the damage you take from your dark contract cards.

D/D Gryphon

Loading... , based on the Griffin from greek mythology, is the newest edition to the deck and one of the 2 main reasons this deck becomes relevant once again. It has 4 effects that can all be used during the same turn once each. The 2 effects that get used the most are to special summon itself from the hand if you control a D/D monster and to search a D/D card if it gets special summoned from the GY.

This card is a much needed extender for the deck and brings it to another level.

D/D Scale Surveyor

Loading... , based on the profession of surveyor, is similar to Loading... letting you special summon itself from the hand. The difference between the 2 is that you need to control a D/D Pendulum Monster Card in order to summon Loading... from your hand. Since it can make itself to level 4 on summon, it also helps to extend your plays.

D/D Orthros

Loading... , based on the Orthrus from Greek mythology, has now become the main turner of the deck. You can special summon it from your hand after you took any type of damage. The downside is that you can only special summon fiend monsters after this card gets special summoned by any way.

It's other purpose is being the low scale for your pendulum summons and it also can be used as a backrow removal by destroying a other D/D card or dark contract you control which comes up in most of the combo lines.

D/D Count Surveyor

Loading... , based on the profession of surveyor, is a new additon to the deck. not only can it special summon itself from the hand by discarding another D/D, it also searches another D/D with 0 ATK or DEF from the deck when it is summoned, basically replacing your discard, giving you a great consistency boost.

D/D Necro Slime

Loading... , based on an Amoeba, is basically the counterpart to Loading... . It's effect allows you to fusion summon by banishing it and another D/D monster from the GY.

This card is essential to further your combo plays.

D/D/D Oblivion King Abyss Ragnarok

Loading... , named after Ragnarök from norse mythology, allows you to special summon a D/D/D monster from the GY when he is special summoned. And you can also tribute 1 other D/D monster to banish 1 monster your opponent controls.

The card is mainly used by placing it into the pendulum zone with the effect of Loading... . It's pendulum effect allows you to special summon a D/D monster from your GY when you special summon another D/D monster. But if you use the effect, the battle damage the opponent takes is halfed.

D/D/D Zero Doom Queen Machinex

Loading... , based on Declans's/Reiji's mother, Henrietta Akaba/Akaba Himika, is the new power card of the deck. Not only is it a 1-Card-Starter that lets you place a dark contract directly from the deck, it also can summon itself from the extra deck when another D/D/D or dark contract gets destroyed and destroy a card without targeting in the process.

It also can place itself in the pendulum scale when it gets destroyed as a monster.

D/D Lance Soldier

Loading... , based on the Lance Defence Soldiers group of the Yu-Gi-Oh! Arc V anime, is the new main tuner monster of the deck.

It can summon itself from the GY by destroying a dark contract you control and also manipulate its level to help comboing.

Dark Contract with the Gate

Loading... is your main searcher of the Deck. It allows you to search any D/D monster once per turn. It is also a 1 card combo by itself. The down side is that you take 1000 points of burn damage during each of your standby phases as long as it is face-up on your field.

Dark Contract with the Zero King

Loading... is a new contract for the deck that lets you destroy a D/D card you control to summon any D/D monster from your deck while only allowing you to special summon D/D monster for the rest of the turn. Like most other dark contracts, you take 1000 points of burn damage during each of your standby phases as long as it is face-up on your field.

Extra Deck