This beta version of Ninja Gaiden Episode II - The Dark Sword of Chaos offers a glimpse into the development process of the NES game. Beta versions often contain unfinished elements, bugs, and mechanics that differ from the final release. This particular beta provides insight into the game's progression and showcases potentially altered gameplay elements or levels compared to the final USA release. The original game was produced by Tecmo.  While specifics about the changes in the Beta are unavailable without further research, it's important for preservation of gaming history and understanding of game development. 

Ninja Gaiden Episode II - The Dark Sword of Chaos (USA) (Beta)

Ninja Gaiden - Dragon Scroll