In combat, both the player's party and enemies are arranged in two lines, front or back. Up to five party members can participate in battle at once. At the start of battle, the back line is protected by a special defensive "wall" which is based on the combined hit points of the front line. This wall reduces damage that the characters in the back experience. However, as the front line takes damage, the wall weakens, and can only be recovered through the use of certain spells or skills.