Navigate a mysterious castle where memories are power in Kingdom Hearts: Chain of Memories for the GameBoy Advance. Following the events of the first game, Sora, Donald, and Goofy find themselves in Castle Oblivion, where they must use a unique card-based battle system to fight enemies and explore Disney worlds shaped by Sora's recollections. Strategically build your deck to unleash powerful attacks and uncover the secrets of the castle and the shadowy Organization XIII in this captivating action RPG.