There are five elements to be considered: Fire, Water, Grass, Light, and Dark. Each element is stronger than another element, as follows. Fire is stronger than Grass. Grass is stronger than Water. Water is stronger than Fire. Light and Dark are stronger than each other. When you attack an enemy that is of a weaker type, your attack will do double damage. If you attack with an element that they are resistant to, your attack will do half damage. The names of various levels often provide a clue as to what you will be facing.