World 23

World 23 is the interior of Bowser's Castle in Dr. Mario World. The first area is available as of 10 PM PT on Dec. 16, 2020, while the second area, challenge stages and special stage are available as of 1 AM PT on Dec. 28, 2020.

When an area is cleared, Bone Goombas, Thwomps and Bony Beetles appear. The viruses featured in the regular stages are red, yellow and light-blue.

Profiles

 * Dr. Mario World Twitter:
 * Yellow: "New stages will be added on Dec. 16 at 10 PM PT! Maybe it's just me, but I gotta wonder why Bowser picked such a scary place to live. How does he relax around all those spikes?"
 * Yellow: "Since everyone's so busy around New Year's, half a world was added early! The special stage clear reward for pushing through Bowser's Castle is... Dr. Bowser, obviously!"