be the sum of the ranks of the three cards in the combo. Certain card combinations will create a "sleight", a special combination that will create a powerful physical attack, magical spell, or summon attack. When the player runs out of cards, the deck must be reloaded. Additionally, using a card combination will cause the first card in the combo to become unusable until the end of combat. Sora's and Riku's stories differ gameplay-wise in several ways. In Sora's story, Sora obtains cards by defeating enemies or through Moogle Shops. In some cases, Sora must earn the specific card first through a plot event before it becomes available. Sora can create and store three different decks in the pause menu. Unlike Sora, Riku has a closed deck that cannot be customized. The cards in his deck change depending on the world in which he is traveling. Riku is limited to mainly physical attacks, enemy cards and Mickey Mouse ally cards. He can activate "dark mode" and unlock his sleight attacks if he accumulates enough "dark points". Dark points are earned by breaking enemy cards and combos, and the difference between Riku's card or combo and the enemy's card or combo is how many dark points he will accumulate for that card break. Plot Setting Kingdom Hearts: Chain of Memories is set immediately after the events of the first game. It is set in Castle Oblivion, a mysterious castle kept by Lord Marluxia. Sora and his teammates are told that the castle causes visitors to lose their memories upon entering. The lobby and areas between floors are white with flower-themed decorations, but each floor can be transformed into a different world from the first Kingdom Hearts game using "world cards" created from Sora's memories. Like before, many of the worlds of Disney and Square Enix reappear. Unlike the previous game, the worlds are created from Sora's memories. As such, many of the events experienced in Kingdom Hearts are relived in this game, Sora encounters memory-based versions of Disney characters that he has met before (except Deep Jungle in Tarzan). The individual plotlines differ from those in the original game and revolve around the theme of memory. Just as Kingdom Hearts had several worlds created specifically for that game, Chain of Memories introduces Twilight Town as a world created from memories on "the other side of [Sora's] heart", in addition to the