How do you unlock boss rush in cave story wii. Do you have to defeat ballos?
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Yes, you have to beat Ballos, You can't unlock it if you have NDS.ver but if you have the (PICC), (QMS), or (MMORPG).ver like the Wii then you can unlock it. If I was you I would be geting the "cave story+" for pc it's much more fun but it has a crappy ending. -_-
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