you're probably the only person on the planet who knows the answer to this question (outside of the game's developers), but
how does the game end? i never managed to beat it as a kid, and i no longer have the means to go back and try again. emulating it has also been unsuccessful. i can't find any videos of any gameplay beyond the first 3/4 worlds. the only thing i found is that there's an expert difficulty mode which is unlocked after beating normal mode, where you play the stages in reverse order as a robot version of jinbe. also wondering how that plays out too, do you still fight the bosses in that mode?
how does the game end? i never managed to beat it as a kid, and i no longer have the means to go back and try again. emulating it has also been unsuccessful. i can't find any videos of any gameplay beyond the first 3/4 worlds. the only thing i found is that there's an expert difficulty mode which is unlocked after beating normal mode, where you play the stages in reverse order as a robot version of jinbe. also wondering how that plays out too, do you still fight the bosses in that mode?