World of Memories

The Memory World is Ancient Egypt's events being replayed by the memories of Pharaoh Atem and Zorc Necrophades through the Shadow RPG, taking place in the Millennium Puzzle. It is the main setting of the Dawn of the Duel arc of the second anime series and manga.

History
When Yami Yugi completed all his tasks and presented the Egyptian Gods to the Tablet of Lost Memories, his soul got transported to a table playing the Shadow RPG against Yami Bakura, while simultaneously entered the World of Memory, entered the body of his past self, and relived through the events that happened 3,000 years ago. In the anime, Yami Bakura also entered the Memory World, and entered the body of his past self to regain his memories as the Thief King and fight against Pharaoh Atem, while yet simultaneously playing the Shadow RPG with Yami Yugi. This whole world is controlled by the Shadow RPG, and takes place in the Millennium Puzzle, where both Zorc and Atem were sealed in. Yugi, his friends, and Shadi (Bobasa in the manga) entered the Puzzle in an attempt to find the "true door" and enter the World of Memory. In the manga, a shadow of Dark Bakura spied on Yugi and his friends. Yugi eventually entered the World of Memory, and in the manga, Dark Bakura secretly followed them inside, whereas the full Dark Bakura played the Shadow RPG against Dark Yugi. Bakura's goal was too return Zorc Necrophades from the Millennium Puzzle, and Yami Yugi's goal was to defeat Bakura and keep his friends safe. Bakura was eventually successful in Zorc's resurrection. However, Yami relearned his true name, and defeated Zorc, which killed Zorc and Yami Bakura. Yami Yugi later left the Memory World.