Stupidity: There's no explanation for the level in Italy; Billy and Jimmy have already all the three stones by the end of the Japan battle and they need then to go to Egypt. The NES version does explain it, in a laughable way; Hiruko says a rather silly "We must now travel to Egypt to free Marion, but before we do, we must spend time in Italy, practising for the big battle", Technically the NES version has a different storyline, since Marion is not missing at all in the other versions.
Other mistake: In the opening credits Billy's name is misspelled as Bimmy. Bimmy and Jimmy, instead of Billy and Jimmy.
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