Bowser's Jr Fiery Flotilla is the final galaxy in world 1. It is the first time where you meet Bowser Jr in the game. The galaxy is resting on a mushroom.
This galaxy also features two green stars.
Gobblegut's aching belly - This is a mission for a grand star. Mario or Luigi must go through the level defeating Gobblegut.
Fiery Flotilla Speed run - This is where mario or luigi must defeat gobblegut in a certain amount of time.