Showdown on the Inverted Pyramid
From the Super Mario Wiki
The mission begins at the Moe-Eye Habitat, and Mario must follow some Lifts on tracks and make his way to the Inverted Pyramid. Upon entering, Mario must capture a Bullet Bill and enter an 8-bit section where he must flip through gravity to avoid incoming Bullet Bills until he exits the section and captures another Bullet Bill to reach some Hat Trampolines. After crossing some cacti, Mario will end up outside, where he will face off against Hariet. After she is defeated, Mario will receive a Multi Moon.
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