 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 . Riku 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 . 
