Both the opening cinematic and the Double Impact sequence found in the Japanese version are absent in both the USA and PAL versions of the game for unknown reasons.
Yae's alternate costume is based off the character Lum Invader from the anime Urusei Yatsura.
Inside Kenzo's house in Edo, where you need to get the chain pipe, there's a poster for Goetanic, a parody of director James Cameron's film Titanic.
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In PAL regions, the game was released as Mystical Ninja 2 Starring Goemon, to serve as a follow-up to Mystical Ninja Starring Goemon, despite both featuring different style of gameplay.
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