World 3 (Super Mario Galaxy 4)

World 3: The Expanses of the Universe is the 3rd World of Super Mario Galaxy 4 and is the second world where [http://www.mariowiki.com/Bowser_Jr. Bowser Jr.] is encountered.

Galaxies

 * Cloudy Falls Galaxy
 * Air Fleet Galaxy
 * Creepy Kingdom Galaxy
 * Robo Park Galaxy
 * Hammer Hills Galaxy
 * Ancient Archway Galaxy
 * Giga Gadget Galaxy
 * Bowser Jr.'s Massive Star Fleet