Earth ( planet ) The Earth , also called the Human World ( 人間界 , " Ningen Sekai " ) , is a planet created along the stars and planets . It is home to millions of species of life , including humans . It is the main setting for every " Yu - Gi - Oh ! " series , and all of the protagonists call Earth home . It is revealed in " Yu - Gi - Oh ! ARC - V " that there are many parallel Earths spread across the multiverse . One alternate Earth resides for each method of Summoning introduced except the Pendulum Summon , and the Duelists who survive on those alternate Earths utilize the Summoning method associated with their dimensions . Features . Appearance . The Earth appears a low - energy world enabling a proliferation of organisms for plants and animals . Etymology . The modern English noun earth developed from Middle English erthe personified as a goddess in Germanic paganism ( appearing as Jörð in Norse mythology , mother of the god Thor ) . In general English usage , the name earth can be capitalized or spelled in lowercase interchangeably , either when used absolutely or prefixed with " the " ( i . e . " Earth " , " the Earth " , " earth " , or " the earth " ) . Many deliberately spell the name of the planet with a capital , both as " Earth " or " the Earth " . History . Formation . When the universe began it split into darkness and light . As the light vanished soon , the darkness filled the universe and created everything in the world , including life . First one card was born , the front represented the Earth also designated as the Human World and the Duel Monsters Spirit World , while the darkness was the World of Darkness . Eventually , the stars and planets were born , including the Earth , where the humans stood at the top of all creations . Inevitably , the humans discovered the " Duel Monsters " , therefore , it became a touchstone to test their souls . Early civilization . 10 , 000 years before the start of the series , a perfect city known as Atlantis existed isolating it from the rest of the world . It was inhabited by Duel Monster Spirits and humans , who coexisted peacefully . They were said to have known nothing of violence . Soon after a monarch Dartz came to power , he tried to destroy the earth with an army of Orichalcos Soldier s , but his father , Ironheart , opposed him . He went to a temple and requested the assistance of the Duel Monster Spirits , which they agreed to lend . After a battle known as the Battle of the Stone Wasteland , The Great Leviathan was defeated and sealed away by Ironheart ' s army . Before his death , Ironheart sealed the doors to the Duel Monsters Spirit World , leaving behind their spirits scattered across all the world . Some were left in the Egyptian pyramids , the Greek temples , the Aztec pyramids , the Egyptian mastabas . Dartz survived , and began gathering souls to revive The Great Leviathan to destroy and reconstruct both the Earth and the Duel Monsters Spirit World in his own image . Ancient Egypt . 3 , 000 years ( 5 , 000 in the English version ) in ancient Egypt , Egyptians used stone tablets to seal Duel Monster Spirits and summon them to fight battles . The Egyptians harnessed the power of the Duel Spirit s for use in their Shadow Game s . It is implied that Duel Spirits were the basis for the Egyptian concepts of " ka " and " ba " . When the dark magic of the shadows threat to destroy humanity and the earth , Pharaoh Atem using a spell which included his name and sealed Zorc in the Millennium Pendant . He gave throne of Egypt to Priest Seto , then sealed his soul within the Millennium Pendant , erasing his own memories to keep the spell from ever being used to resurrect Zorc . The puzzle was then destroyed , scattered into dozens of pieces , making it known as the Millennium Puzzle Yu - Gi - Oh ! 3000 years later in the present age , a young boy named Yugi Muto solves the Millennium Puzzle and is possessed by the spirit of the Nameless Pharaoh , who lost all of his memories from his old life . As a thank you to the spirit who saved him from bullies and gave him new friends , Yugi decided to help the spirit out and find a way to recover his lost memories and send him to the after life . Yu - Gi - Oh ! GX . Ten years later , " Yu - Gi - Oh ! GX " follows a young boy named Jaden Yuki who , along with his friends , attends Duel Academy , a special institute founded by Seto Kaiba , in the hopes of becoming the next King of Games . Using his " Elemental Hero " Deck Jaden faces various challenges against other students , teachers and other mysterious beings . Yu - Gi - Oh ! 5D ' s . Some time after the events of " Yu - Gi - Oh ! GX " , the earth is futuristic in the City of New Domino . The game of " Duel Monsters " has changed ; a new addition has been introduced to the future of Dueling as seen in 5D ' s : " Turbo Duel s " which are played in giant stadiums , and Duelists ride motorcycles with built - in Duel equipment known as " Duel Runner s " . This series focuses around an aspiring Duelist from Satellite named Yusei Fudo . Yu - Gi - Oh ! ZEXAL . History . It is revealed that before becoming Barians , the Seven Barian Emperors were humans once in their past lives , with each of their past being connected to each ancient ruin the Mythyrian " Numbers " were hidden in and their protectors . Emissaries from Astral World and Barian World , Astral and Don Thousand , fought against each other on Earth . According to Jinlon , two divine lights were fighting in the sky far , far away . The battle lasted for hundreds of days . Rains of fire poured down on the grounds as lightning ripped through the very Earth . Then those two lights collided and vanished . Astral ultimately emerging victorious , sealing Thousand in the Barian Sea , but brought chaos to the Earth in the process . Current . The Earth was futuristic in another city in the near future , Heartland City , kids and adults enjoy Augmented Reality Duel s . The hero is Yuma Tsukumo . At a beginner level , he ' s a champion at absolutely losing . Due to a chain of events , Yuma ends up challenging the number one delinquent at his school , Reginald Kastle . His destiny is changed by a bizarre door he ' s seen in his dreams . When Yuma unlocks this sealed door , countless lights fly from it and scattering all over the Earth . And when Yuma comes to , he sees the mysterious entity , Astral , who came from a parallel dimension , standing before him . Astral World and another world sent a wave of energy that collided with the Earth where Yuma Tsukumo and Astral currently are , causing time to temporarily stop and a sun from each world to appear . Dr . Faker explained that it is because the worlds are getting closer . Dr . Faker also said that something bad will happen soon because of this . After Number 96 mastered the power of Chaos , he opens a portal to this world , Barian World and Astral World , then he launches powerful attacks into the three worlds and an abnormal phenomenon occurs all over the world . Later on , Don Thousand and Vector initiated their machination , sending many Barian " Numbers " they designed to corrupt the populace of Earth , as they were to be sacrificed so that Barian World can be merged with Earth via Fusionizer s . When Yuma returned from Astral World , he started a Duel with Mr . Heartland , who harmed Kite using the " Number " he obtained from Scritch . Mr . Heartland used his " Number 1 " and transformed himself into a demonic humanoid , depleting Yuma ' s points rapidly . However , Yuma and Astral merged into " ZEXAL III " and defeated Mr . Heartland , making " Numbers " Vector and Don Thousand created to be destroyed . With the Earth and Barian World merging together , the Seven Barian Emperors began the final battle of the Interdimensional War with Yuma Tsukumo and his allies . Yu - Gi - Oh ! ARC - V . History . In the past there was Original Dimension , also known as the United World , is a dimension that became split into Four Dimensions . A colorful and futuristic city , it has hovering vehicles and virtual birds while sharing many general similarities to the Fusion , Synchro , Xyz and Standard Dimension ' s architectural structures . It is also the birth place of the ARC System technology . At some point , much of it was destroyed by Zarc using his fused Dragon form . At a later point , Ray Akaba opposed the Supreme Dragon King Zarc by using four cards to defeat him which caused them and the Dimension to split into four .