From the Super Mario Wiki, the Mario encyclopedia
Hands-On Hall, otherwise known as World 6-3, is the third level in the sixth world of Super Mario 3D World, becoming accessible after beating World 6-2, Spooky Seasick Wreck. Players must acquire 100 Green Stars to unlock the course, and its own completion opens Prince Bully Blockade. This level resembles a traditional Japanese dojo, and has orchestrated music combining both Japanese and Chinese features. In addition, this stage's Japanese name closely resembles the name of the Family Computer Disk System title The Mysterious Murasame Castle.
The first area players visit a short indoors corridor. At the end of it there are two shōji doors that reveal a Warp Pipe when tapped on via the GamePad, hence the name, "Hands-On". They are dropped into a longer, three-story room with a few Goombas, Galoombas and one single Spike. The third story has a gong that makes coins fall from the ceiling when hit.
A Warp Box takes the player to the outside of the temple, where the Checkpoint Flag is, besides Propeller Boxes and enemies such as Thwomps and Goombas. The Goal Pole is on the highest roof. Here, the character can also collect all five Key Coins to open a Warp Box that leads to an optional area with many gongs and Spikes.
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