From the Super Mario Wiki
Cookie Cogworks, otherwise named World Bowser-3, is the third level in World Bowser from Super Mario 3D World, becoming accessible after the completion of Spiky Spike Bridge. Either this level or Plessie's Dune Downhill unlocks The Bowser Express.
This level is themed after sweets and desserts. The course begins with a trail of spinning cookies and cookie cogs, featuring also some Spiny Skipsqueaks and Mega Piranha Plants. A Clear Pipe takes Mario and friends to the next level, where they will find the Checkpoint Flag and a tall wall that must be scaled via more cogs. At the top of it, there are two Mega Piranha Plants and another Clear Pipe.
The next area has many Horned Ant Troopers, and is followed by a set of spinning cookies which ends on a cannon Clear Pipe, that launches the players to the final patch, where they meet the Goal Pole.
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