The Gym originally appears as a small, empty house, but standing at the center of its carpet causes it to burst into its true form, a maze-like sphere, and has a night sky riddled with constellations of various Pokémon like Pikachu, Lunatone or Staryu. Some galaxies and comets can also be seen. In order to battle the gym leader Olympia, who is a master of Psychic-type Pokémon. The player must travel across various glowing platforms, connected via warp tiles on three separate floors. Olympia is located on a circle shaped platform on the bottom floor. After defeating Olympia she will give you the Psychic Badge and TM04 and then offer a warp back to the top floor.
