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Recent Updates

Ninja Gaiden Restoration + Optional Free Movement

Hack of Ninja Gaiden


This is a set of two patches. The first one aims to make the English Ninja Gaiden release closer to its original Japanese version while fixing a significant bug. The second patch has the same features as the first, but also serves as an optional remixed version that can be considered an easy type.

Changes for the restoration patch:

  • The player is sent to level 6-3 rather than 6-1 upon dying against the final boss trio.
  • Item placements are reverted to their Japanese originals, as evident in stages such as 4-1 where they reach the very top of the screen again.
  • Ken’s name is changed to Joe like in the Japanese version and 3D series. Ninja Dragon is also changed to Dragon Ninja.
  • Typos and grammatical errors are fixed such as Irene’s “your safe” line.
  • Lines containing “damn” and “hell” from the unfinished script (which ultimately made their way into Ninja Gaiden Trilogy for the SNES) are restored.

Additional changes for the free movement patch:

  • The player’s backwards jumping momentum is the same as their forward jumping momentum.
  • The player suffers no horizontal knockback.
  • The timer is permanently frozen.
  • A few new item placements are provided. For example, stage 3 was the only level in the original game not to contain the Jump & Slash technique, so it is added to 3-2.


  • never-obsolete for the NinJax editor.
  • Displaced Gamers for the code breakdown.
  • Maël Hörz for HxD.

ROM / ISO Information:

  • Database match: Ninja Gaiden (USA)
  • Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
  • File SHA-1: CA513F841D75EFEB33BB8099FB02BEEB39F6BB9C
  • File CRC32: 11F953F6
  • ROM SHA-1: 15F245161179AB1959B7DC20E82ADD024D23AA3D
  • ROM CRC32: 7C4A72D8



RHDN Hack ImageRHDN Hack ImageRHDN Hack ImageRHDN Hack Image


ContributorType of contributionListed credit
never-obsoleteOriginal HackingNinJax creator
Displaced GamersOriginal WorkCode breakdown

User Review Information

Restoration is not just recommended, but necessary.

Reviewed By: BlazeHeatnix on 19 Jul 2022

Ninja Gaiden is an amazing game and one of the NES’s many classic titles. However, the infamous final boss bug (left in intentionally) pushes the difficulty over the edge into unfair territory. Thankfully, that bug has now been corrected with this hack, along with some translation fixes. I’m not a fan of one of the other changes, though. The powerups were adjusted downwards for a reason: it looks bad for them to be in front of the HUD. Reverting them back was a pointless change.

I can only recommend the Free Movement patch for those who want a very casual playthrough, as it somewhat neuters the challenge.

Version 1.0 Recommended - Yes

User Reviews
A little better but still not perfectInsane Mame Gamer (IMG)26 May 20231.0Yes
Restoration is not just recommended, but necessary.BlazeHeatnix19 Jul 20221.0Yes
I HATE this game, but like this hack!Naniyue09 May 20211.0Yes
Places the difficulty at a more casual settingbrownjacket30 Mar 20211.0Yes