New answers tagged new-super-mario-bros-wii
You need to find secret exits in the levels. The first one is in level 1-3, right after the venus fire trap, that fire breathing pirahna plant, you can find a secret tunnel, and above it is a secret area. Happy hunting.
The star coins are used for unlocking levels in world 9, stars on your profile, and to unlock videos in Peach's castle.
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