Arle no Bouken: Mahou no Jewel is a role playing game developed and published by Compile for the Game Boy Color, it was released on March 31, 2000. The game revolves around the collection of cards, each of which contains a monster. Madou Monogatari/Puyo Puyo protagonist Arle Nadja and her usual foes, such as Skeleton T and Schezo Wegey, use these monsters to assist them in battle.