World 13 (Dr. Mario World)

World 13 is an underground crystal cavern world resembling Tilted Tunnel from New Super Mario Bros. U in Dr. Mario World. The first area is available as of 1 AM PT on Mar. 5, 2020, while the second area, challenge stages and special stage are available as of 2 AM PT on Mar. 19, 2020.

When an area is cleared, Bony Beetles, Bone Goombas, and Swoops appear. The viruses featured in the regular stages are red, yellow and blue, with the exception of one stage, which has green viruses in addition to blue.

Profiles

 * Dr. Mario World Twitter:
 * Red: "Looks like new stages are coming on Mar. 5, 1 AM PT. Seeing the sparkling crystal underneath the purple sludge makes me excited!"
 * Yellow: "New stages are added, I heard! I wonder how much the big sparkly thingies would sell for? Oh, and the reward for World 13's special stage is Dr. Fire Luigi! That huge L he makes is a bit scary, though..."