Yu-Gi-Oh! Forbidden Memories

Story

The game begins in ancient Egypt, where Prince Atem sneaks out of the palace to visit his friends Jono and Teana at the dueling ground. There they witness a ceremony performed by the magicians that is darker than the ceremonies they normally perform. After the ceremony, Atem duels with one of the priests, named Seto, and defeats him. When Atem returns to the palace, he is quickly sent to bed by Simon Muran, his tutor and advisor. As Simon leaves, he is informed by a guard that the High Priest Heishin has entered the palace with a strange spell. Muran goes looking for Heishin. When Muran finds him, Heishin tells Muran that he has found the Dark Power, and then uses the Millennium Staff to destroy Muran. When Heishin finds Atem, he threatens to kill the Egyptian king and queen if he doesn't hand over the Millennium Puzzle. Muran appears behind Heishin and tells Atem to smash the puzzle. Atem obeys and Muran seals himself and Atem inside the puzzle to wait for someone to put it back together. Five thousand years later, Yugi Mutou puts the puzzle back together. He talks to Atem inside the puzzle, and Atem gives Yugi six blank cards. Not knowing what they are for, he takes them to a dueling tournament. After defeating one of the duelists, one of the cards is filled with a millennium item. When Yugi realizes what the cards are for, he ends the tournament and fills all six cards with Millennium Items. This allows Atem to return to his own time. Once in his own time, Muran tells Atem what has happened since he was sealed. Heishin and the mages have taken control of the kingdom with the Millennium Items and that the only way to free the kingdom is to retrieve the items from the mages guarding them. After passing this on, Muran dies. After catching up with Jono and Teana, he goes to the ruined palace and searches it. He finds Seto, who gives him a map with the locations of the mages and the millennium items and asks him to defeat the mages. After Atem has recovered all but one of the Millennium Items, Seto leads him to Heishin, who possesses the Millennium Staff. Atem defeats Heishin, but finds out that Seto has the Millennium Staff and only wanted to use Atem to collect the items in one place. Atem duels Seto for the items and defeats him, but after the duel, Heishin grabs the items and uses them to summon the DarkNite. Hoping to use the DarkNite to destroy his enemies, he doesn't have the item to prove its power, so the DarkNite turns Heishin into a card instead. After turning Heishin into a playing card, the DarkNite taunts Heishin before burning the card. After Atem shows that he has the Millennium Items, DarkNite challenges him to a duel. Atem defeats him, whereupon he transforms into Nitemare, who challenges Atem again. Atem defeats him again, and Nitemare reluctantly returns to where he came from. Atem can then ascend the throne and lead his people in peace.