2004

For the World Championship Series 2004 Duelist ID Card, see Duelist Name Card.

All Yu-Gi-Oh!-related events for 2004.

January

• 12 - The video game Yu-Gi-Oh! Power of Chaos: Yugi the Destiny and its promotional cards are released in North America.

March

• 1 - English TCG release date of Invasion of Chaos.

April

• 1 - April 2004 Forbidden and Limited card lists take effect.
• 7 - The video game Yu-Gi-Oh! Power of Chaos: Kaiba the Revenge and its promotional cards are released in North America.

June

• 1

Ancient Sanctuary (AST) This set includes support for Fairy-type monsters, as well as support for Normal Monsters. Highly sought after cards in this pack include The Agent of Judgement - Saturn, The Agent of Force - Mars, Stone Statue of the Aztecs, Gear Golem the Moving Fortress, Needle Burrower, Blowback Dragon, Zaborg the Thunder Monarch, Archlord Zerato, Enemy Controller, Burst Stream of Destruction, Amplifier, The Sanctuary in the Sky, Spirit of the Pharaoh, Legacy Hunter, Ghost Knight of Jackal, Emissary of the Afterlife, Dark Magic Attack, The First, Second, and Third Sarcophagus, Des Counterblow, Mazera DeVille, and The End of Anubis.

July

• 2 - The video game Yu-Gi-Oh! Power of Chaos: Joey the Passion and its promotional cards are released in North America.
• 29 - The video game Yu-Gi-Oh! Capsule Monster Coliseum and its promotional cards are released in Japan.

September

• 1 - September 2004 Forbidden and Limited card lists take effect.
• 28 - Release date for Master Guide and its promotional cards.

October

• 1

Soul of the Duelist (SOD) This pack introduces the LV monsters, monsters that appear to evolve by tributing them after a certain condition has been fulfilled. It is also the first TCG pack that is not a combination of two OCG packs. It also introduces a new rarity, Ultimate Rare, which gives the card an "embossed" feeling on the image, attribute, name, and level. Highly sought after cards in this pack include Horus the Black Flame Dragon LV 6 and 8, Mystic Swordsman LV4, Armed Dragon LV7, Mobius the Frost Monarch, Inferno Fire Blast, Ectoplasmer, Greed, Null and Void, and Hallowed Life Barrier.

• 10

yugioh Gx aires 

• 12 - English TCG release date of Dark Beginning 1.

• 15'

Tournament Pack 5 (TP5) This set contained 20 cards.

November

• 26 - The video game Yu-Gi-Oh! Capsule Monster Coliseum and its promotional cards are released in North America.

• 24

Soul of the Duelist (SOD) This pack introduces the LV monsters, monsters that appear to evolve by tributing them after a certain condition has been fulfilled. It is also the first TCG pack that is not a combination of two OCG packs. It also introduces a new rarity, Ultimate Rare, which gives the card an "embossed" feeling on the image, attribute, name, and level. Highly sought after cards in this pack include Horus the Black Flame Dragon LV 6 and 8, Mystic Swordsman LV4, Armed Dragon LV7, Mobius the Frost Monarch, Inferno Fire Blast, Ectoplasmer, Greed, Null and Void, and Hallowed Life Barrier.

December

• 30 - The video game Yu-Gi-Oh! Duel Monsters International 2 and its promotional cards are released in Japan.