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Demon Sword

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Title Screen

Demon Sword

Also known as: Fudou Myou Ouden (JP)
Developer: TOSE
Publisher: Taito
Platform: NES
Released in JP: March 29, 1988
Released in US: September 1991

DevTextIcon.png This game has hidden development-related text.
DebugIcon.png This game has debugging material.
LevelSelectIcon.png This game has a hidden level select.

The story about the most radical sword out there.

To do:
The game was heavily cut down when it was released in America. Document differences. Also, unused graphics.

Debug Leftovers

Game Genie code AESNNNNY (US) or AENNONNY (Japan) will re-enable some debug leftovers:

  • During the game, press B on Controller 2 to skip the current level.
  • While the game is paused, you can add any items and ammo to your inventory by using the D-Pad and A on Controller 2.
  • Enable invincibility by pressing Left + B on Controller 2 (for the US version) or Controller 1 (for the Japanese version).

Reset String

The game uses the string


to determine if the game was soft or hard reset.

(Source: CaH4e3)

Regional Differences

Title Screen

Japan US
Fudou Myouou Den titlle.png DemonSwordTitle.png


The password screen looks very different between regions. Also, in the Japanese version the password screen is selectable from the main menu. For the US version, it's only accessible by holding Up and pressing A, B, A, B on the title screen.

Japan US
Fudou Myouou Den (Japan) password.png Demon Sword (USA) password.png


  • The Japanese version has a short story intro. The US version just goes to the title screen.
  • The UI is different between regions.
  • The Japanese version has a short poem during the ending, and a piece of artwork showing the hero and the princess riding a horse. These were removed for the US version.