Torneko no Daibouken - Fushigi no Dungeon

Torneko's Great Adventure: Mystery Dungeon is a 1993 role-playing video game by Chunsoft. The first entry in the Mystery Dungeon series, the game features Torneko, a merchant from Dragon Quest IV, and his adventures around the Mystery Dungeon in search of items. 33 years after its Japanese only release, the game received a worldwide release on modern platforms under a remake titled Dragon Quest Heroes: Torneko's Mystery Dungeon -Classic HD-.

Torneko's Great Adventure is the first spin-off game in the Dragon Quest franchise. The game was a success with over 800,000 copies sold, which led to Chunsoft turning it into a franchise with the release of a sequel, Mystery Dungeon 2: Shiren the Wanderer, in 1995. The unreleased English version of the game was to be called Mystery Dungeon: Taloon's Great Adventure.