Bowser Jr.'s Boom Bunker

Bowser Jr.'s Boom Bunker is a boss galaxy in Super Mario Galaxy 2. Here, Mario will fight Bowser Jr.'s most dreaded weapon, the Boomsday Machine. The main enemies here are Octoombas and Chomp Heads.

Megahammer Planet
The starting planet of the galaxy. There is a lot of mud in this galaxy, a few Fizzlits and a Chance Cube. The Megahammer that Mario fought earlier in the game (or possibly another) is found destroyed. A single Bullet Bill still pops out of its blaster. There is a crystal vault protecting a Cannon on top of the remains of one of the robot's arms. The entire Toad Brigade is also here

Boomerang Bros. Planet
A castle-like planet inhabited by two Boomerang Bros. There is a big target on one side. If Mario hits on the center when launched from the cannon he will get a 1-Up. There are several poles in the planet, and one of them has an Life Mushroom at the top. After defeating the enemies, a Launch Star will appear.

Midway Planet
A small planet with a Midway Point and some mines spinning around a cannon.

Spinning Platforms Planet
A planet with a Black Hole inside of it. There are several spikes and different colored platforms spinning around at different speeds. The second set of platforms have Mines on them and a Comet Medal in between two mines. There are also a few Cloud Flowers here. At the end is a Launch Star.

Dark Matter Planet
A big, rectangular planet with a few platforms floating in dark matter. There is a platform that tilts and moves while carrying Mario. At the end are a Midway Point and a Launch Star. This planet replaces the Spinning Platforms Planet in the Daredevil Mission.

Boomsday Machine Planet
A circular planet made where Bowser Jr's Boomsday Machine is battled. There are some air vents, clouds and Cloud Flowers throughout it.

Bowser Jr's Boomsday Machine
In this mission, Mario must get a bullet bill to follow him and break open the cage which holds a cannon inside. Then, shoot to the Boomerang Bros. Planet and beat both Boomerang Bros. Next, use the launch star to get to the Midway Planet and use the cannon to get to the Spinning Platforms Planet. Mario must then ground pound the stones on the other end of the planet and launch to the Boomsday Machine Planet. Here, Mario must defeat the Boomsday Machine by creating cloud platforms and ground pounding the glass top. After 3 hit, the Boomsday Machine will explode and Mario will earn the Grand Star.


 * Enemies
 * Fizzlits
 * Bullet Bills
 * Boomerang Bros.
 * Mines
 * Planets Visited
 * Megahammer Planet
 * Boomerang Bros. Planet
 * Midway Planet
 * Spinning Platforms Planet
 * Boomsday Machine Planet

Boomsday Machine Daredevil Run
Mario must get through this mission with one health. The level is the same as the first mission, except instead of the Spinning Platforms Planet, Mario must go though the Dark Matter Planet to get to the Boomsday Machine Planet.


 * Enemies
 * Fizzlits
 * Bullet Bills
 * Boomerang Bros.
 * Mines
 * Dry Bones
 * Planets Visited
 * Megahammer Planet
 * Boomerang Bros. Planet
 * Midway Planet
 * Dark Matter Planet
 * Boomsday Machine Planet

Green Star 1
The player will have to break open the cage in order to get in the cannon on the Megahammer Planet. However, the player will notice the star above the target. The player will just have to shoot directly at the star with careful aiming and concentration, then the player may receive their reward.


 * Enemies
 * Fizzlits
 * Bullet Bills
 * Planets Visited
 * Megahammer Planet

Green Star 2
In order to get the next star, the player must jump in the cannon of the Midway Planet, however, when the player turns to the left, he/she will notice something sparkling in space. The player will have to use aiming, timing and concentration in order to get the prize.


 * Enemies
 * Fizzlits
 * Bullet Bills
 * Boomerang Bros.
 * Mines
 * Planets Visited
 * Megahammer Planet
 * Boomerang Bros. Planet
 * Midway Planet