For example, there is a single smaller cave out in the middle of Pokémon X and Y’s ocean called the Sea Spirit’s Den, which consists of just one room. Presumably, this room will be of importance later (you don’t just leave a blank, open space like that for nothing), but what struck me when I entered this space for the first time was just how moody it was. The complete silence, and then the drip-drop sound of water droplets, creating their own music.