| Unlockable | How to unlock
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| - Finish the game going through all the Bright Side zones. You will turn into dark Opa-Opa, defeat the good Opa-Opa.
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| - Finish the game going through all the Dark Side zones. Your ship will be the good Opa Opa, defeat the dark Opa-Opa.
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| - Same as the good end. Buy the Drop Tear. After defeating the dark Opa-Opa, while he's flashing, hold button 2 & 3 to use the Drop Tear on him.
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