Players are suddenly transformed into a Pokémon and sent out to a world inhabited only by Pokémon. From a group of 20 Pokémon, including the starters from core RPG Pokémon games plus Pikachu and Riolu, you can choose your Pokémon and your partner Pokémon! Battle alongside your partner Pokémon, who will become your best friend as you investigate ever-changing dungeons. Befriend and interact with all 720 known Pokémon as you attempt to save the world from a crisis in a tale of unprecedented scale! The possibilities are limitless!