justify his existence by killing Riku, only to be destroyed by him. Riku chooses to face Ansem upon learning from Naminé that Ansem lives in his heart, and defeats him after DiZ summons him for Riku to fight. Riku then sets out on a journey to utilize both his darkness and his light with Mickey as his companion. Development The idea for an intermediary title was developed after director Tetsuya Nomura and his team had already begun to develop ideas for the second Kingdom Hearts game, which he had intended to be set a year after the original. Originally titled Kingdom Hearts: Lost Memories, Nomura changed the name to match the overall outline of the story, while still reflecting the theme of memories. Chain of Memories was developed to bridge the gap between Kingdom Hearts and Kingdom Hearts II. Like most sequels, Kingdom Hearts II was planned to have the character start from the beginning, ability-wise. To explain the loss of abilities gained in the previous game, Nomura had the story revolve around Sora's memories getting corrupted and implemented the card battle system to symbolize Sora's various memories. Nomura was hesitant about releasing a Kingdom Hearts title on the Game Boy Advance, feeling that the 3D graphics of the original game would not translate well into 2D. Nomura changed his position after hearing that children wanted to play Kingdom Hearts on the GBA. After exploring ideas for the gameplay, he felt that a 2D Kingdom Hearts game would be possible, and that it could still feel like and play like what gamers were used to in the original. Meanwhile, Nomura wanted to give the game a "lighter tone" than the PlayStation2 games. Chain of Memories was announced along with Kingdom Hearts II at the Tokyo Game Show in September 2003. Initial details included the switch to 2D graphics, the use of cards to perform attacks, and that compressed movies would be utilized in some cut scenes. The cut scene animations were rendered using the graphical engine of the PlayStation2 iteration and then encoded for the Game Boy Advance by using a technology developed by Japanese company, AM3. To help market the game, Disney and Square Enix launched official Japanese websites. A playable demo was first made available to the public at the 2003 Jump Festa in Japan; this demo and subsequent demos highlighted the card-based combat system. Aside from information