There are heroes you want to emulate and others you don’t want to be in their shoes: one of them is the hero Mystery Dungeon, who wakes up one morning in the form of a Pokémon – how could this terrible accident come about? Your task is to find out: In search of a cure, you search the Pokémon world and save over 380 fellow Pokémon from numerous dungeons and secret worlds. Klippenberg and Donnerhallhöhle consist of labyrinth-like floors that are recalculated with each visit: Because of the tricky opponents, you often need several attempts, and there are also optional errands in addition to the story missions.
Because there is no trainer, your party of up to four fights as they see fit. The wild Pokémon approach from all directions: you can rush towards them or ambush them and throw items like stones. You only control the hero, your comrades follow adjustable AI patterns. In between you visit the Pokémon Place, where you chat about orders and trade items.