Therefore, the battle system is essential in surviving in the Caballa Island. The battle system is also called MAB System (Multi-Activity Battle System) and the reason is because you can attack not only with the weapons, but also the items in the game can be used for attacks. Different skills can be learned from cards and scrolls. You can also set traps underground to catch monsters. Acquired items and experience points earned through battles will help you to level up and they can also help you upgrade or learn other special skills. Gelder, the currency used in the game (Caballa Island) can also be earned through battles.