First off, this is NOT a bad game, but I didn't really enjoy it enough to finish. See, this is a metroidvania-ish game that takes it's cues from super-metroid. Upgrades to improve exploration more than gameplay most of the time. Basically, a precision jumping game. Ninja gaiden, on the other hand, was basically baseball: Enemies charge and see if can hit them. Which is mostly absent from this game. Also, if the story was removed entirely, I think the game would have been improved.