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Ninja Gaiden Shadow

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Title Screen

Ninja Gaiden Shadow

Also known as: Ninja Ryukenden GB (JP), Shadow Warriors (EU)
Developer: Natsume
Publisher: Tecmo
Platform: Game Boy
Released in JP: December 19, 1991
Released in US: December 1991
Released in EU: 1992


DebugIcon.png This game has debugging material.
SoundtestIcon.png This game has a hidden sound test.
LevelSelectIcon.png This game has a hidden level select.


Now this is interesting ... a Ninja Gaiden game that was going to be a Shadow of the Ninja game. Need proof? The latter's final boss theme is in it and it was programmed by Natsume — not Tecmo.

Sound Test

Ninja Gaiden Shadow U FULL DEBUG.png

Enable Game Genie code 089-CEE-E6A after entering the sound test (see below) then exit the sound test. This will enable a set of numbers at the top allow you to enter any stage and screen in the game.


(Source: nensondubois)

Debug Mode

Ninja Gaiden Shadow U DEBUG MAIN.png

Gameshark code 010801C0 will start the game in a debug menu which offers some CHR viewers, a sound test, and a stage select. START returns you to the title screen, and A selects one of the menu options. Text for the debug menu is located at 0x172CF.

Some extra steps are required if the menu is accessed on real hardware:

  1. Enter the code in the cheating device, but have the switch OFF.
  2. Start the game and enter into the sound test.
  3. Turn the cheat device's switch on. The menu's pointer will appear.
  4. Press B to refresh the screen, then turn the device back off.
Bank Test Object Test Sound Test Stage Select Visual Test
Ninja Gaiden Shadow U DEBUG BANK TEST.png Ninja Gaiden Shadow U DEBUG OBJ TEST.png Gbninjags-sound.png Ninja Gaiden Shadow U DEBUG STAGE SELECT.png Ninja Gaiden Shadow U DEBUG BANK TEST.png
Displays all font CHR sets. Displays all CHR Objects. This is also accessible on its own by holding A + B and pressing Start at the title screen. Selects your desired stage to start from. A bank test screen.


(Source: Andrew Rae: finding debug text, Mezmorize, nensondubois: debug code, alternate sound test access: Land of Gamecubes)