 At that time, Nintendo had announced the DS, but it was not yet on the market; Square Enix asked the team to make a game specifically for the handheld system.The creative team—consisting of Tatsuya Kando (director), Tomohiro Hasegawa (co-director), Takeshi Arakawa (planning director), and Tetsuya Nomura (character design and creative producer)—were able to experience the DS during the "Touch DS" event in November 2004.From this demonstration, they had envisioned a version of "Chain of Memories" in which the card game aspects would be present on the bottom screen and an action role-playing game on the top.