Torneko no Daibōken: Fushigi no Dungeon

Mystery dungeon series
Torneko no Daibouken: Fushigi no Dungeon
	; Logo of the original Super Famicom version.
Developer(s)	Chunsoft
Publisher(s)	Chunsoft
Composer(s)	Kōichi Sugiyama
Series	Mystery Dungeon; Dragon Quest
Platform(s)	Super Famicom, Nintendo Switch, Nintendo Switch 2, PlayStation 5, Xbox Series X/S, PC via Steam
Release date(s)	JP September 19, 1993; INT September 9, 2026 (HD remaster);
Genre(s)	Console role-playing game, roguelike
Mode(s)	Single-player
Media	16-megabit SFC cartridge

Torneko no Daibōken: Fushigi no Dungeon (Japanese: 不思議のダンジョントルネコの大冒険), also known as "Torneko‘s Mystery Dungeon" is the first game in the Mysterious Dungeon series. This installment features Torneko Taloon, the merchant from Dragon Warrior IV. The game involves Torneko adventuring around in the "Mysterious Dungeon" in search of items and treasure.

In 2026, it received an international release on all current platforms under the title "Dragon Quest Heroes: Torneko‘s Mystery Dungeon -Classic HD-". This release offered an English translation for the first time.

Gameplay

The gameplay is similar to roguelike style PC games. The main similarity is the heavy use of randomized dungeons and effects, with each square or panel representing one "step". While Torneko explores the dungeon, he collects gold and items and fights monsters, similar to the ones found in Dragon Quest games. With every step the player takes, monsters will advance steps, too (unless they are sleeping). There are also trap squares that are activated when Torneko steps on them.

Each dungeon has a certain number of floors to explore. The goal is to explore as much as possible before finding the stairs and moving on to the next floor, and ultimately, the exit.

If Torneko leaves the dungeon, he can sell off the items he found. He can also equip certain items to make himself stronger for the next trip, although his level resets every time he enters a dungeon. By saving up money, Torneko can improve his home and shop. The catch is that if Torneko falls in battle, all of his gold and items earned while in the dungeon are lost.

Music

As with other games in the Dragon Quest series, the musical score for the game was composed by Kōichi Sugiyama. Sony Records released the soundtrack, titled Suite Torneko's Great Adventure: Musical Chemistry, on October 21, 1993 in Japan. It contains eight arranged tracks performed by a chamber orchestra, as well as three tracks containing original game music.

HD Remaster

On September 9th, 2026 the game was re-released under the title "Dragon Quest Heroes: Torneko‘s Mystery Dungeon -Classic HD-" on Nintendo Switch, Nintendo Switch 2, PlayStation 5, Xbox Series X/S, and Pc via Steam shortly after a surprise reveal on a Nintendo Direct presentation livestreamed earlier that day. This remaster marks the first time the game has received an official release outside of Japan.

The HD remaster implements a series of quality of life improvments and a brand new opening movie with illustrations by Naoki Ikushima. The Steam version also includes exclusive interactive streaming features.