Battle Belt Galaxy
Battle Belt Galaxy is a galaxy appearing in the game Super Mario Galaxy 2. It is located in World 6. The galaxy is unique in that in order for Mario to advance, he will need to defeat every enemy on a planet. The enemies start easily with foes such as Goombas, Urchins, Li'l Cinders, and Crabbers. However, the planets will get progressively more complex with enemies like Pumpkinhead Goombas, Boos, Li'l Brrrs, and Undergrunts. On the final planet, Mario will need to defeat four Silver Chomps using the Stretch Plants. Fire Gobblegut is fought as a hidden boss when the player feeds a Hungry Luma on the Li'l Brrr Planet 20 coins. The music of this galaxy is the same as the music of the Space Storm Galaxy's first mission.
 Starting Planet
The planet is a small brown planetoid that bears a heavy resemblance to a Soccer Ball or a boulder. The only enemy here is a Goomba of the smaller, gray variety. Defeating the Goomba will make the Sling Star appear,
 Li'l Cinder Planet
This is a small, brown planet covered in pools of lava. Only three Li'l Cinders reside here and the Comet Medal is found here, on top of one of the lava pools. There is also a Bill Board here, who informs Mario that the only way to finish the level is to defeat every enemy.
 Urchin Planet
This is a small, brown planet with three crates and three red Urchins. A Fire Flower is found here to help the player defeat the Urchins. The player can stand on a wooden crate and backflip to land on the Crabber Planet.
 Crabber Planet
This planet is covered in sand and is generally small. The only enemies here are Crabbers, two red and one blue.
 Jack O' Goomba Planet
The planet is shaped like a Jack O' Goomba's head. There is a Warp Pipe being protected by a shield. There are three Jack O' Goombas on the outside of the planet. After they are defeated, a key will appear on the planet's nose which will deactivate the shield and the player will need to enter the newly opened Warp Pipe that leads inside the planet. Inside, the player will need to defeat six Boos using the light from a Green Shell.
This is a small planet made completely of ice and shaped like a Li'l Brrr. The only enemies here are Li'l Brrrs. A Hungry Luma can be found here and will ask for 20 coins. If the player feeds it the 20 coins, it will transform into the Fire Gobblegut Planet. This planet is also one of three planets that appear on the cover of Super Mario Galaxy 2.
 Fire Gobblegut Planet
 Undergrunt Planet
The planet is small and grassy. It is the dot of the Question Mark Planet of the Gusty Garden Galaxy from Super Mario Galaxy but with a few differences. There is a shield guarding a Warp Pipe. Two Undergrunts dig around the dirt roads on the planet. After the player defeats the Undergrunts, a key will appear that will deactivate the shield and the player should travel down the Warp Pipe. Inside, there will be three Swaphoppers. Inside this area, the player will need to wait for the Gravity Wall to change with the beat of the music. After all three Swaphoppers are defeated, the way to the final planet will be revealed.
 Silver Chomp Planet
This is the final and biggest planet of the galaxy. The Power Star is being protected by a shield that needs a key to open it. On this planet, there are four Silver Chomps. They will home-in on the player and try to ram into them. If the Chomps ram into each other, they will simply bounce off. The only way to defeat the Silver Chomps is to use the plethora of Stretch Plants located on the planet. After all four are defeated, a key should appear and unlock the shield, allowing the player to collect the Power Star.
 Mini-Planet Mega-Run
In this mission, the player will need to defeat every enemy on every planet to proceed. The enemies start off weak and easy to defeat, but as the mission progresses, the enemies and terrain usually get trickier. After the enemies are defeated, either a Sling Star or a key will appear. The enemies that are fought are listed in order. After the Silver Chomps are defeated, the player is granted the Power Star. The red and pink Starshrooms also appear in this level. Each one has a Checkpoint Flag. In the pink Starshroom, the Mail Toad can be seen inside looking for the captain, in the red one the Toad Bridgade captain is in the ship acting scared.
 Mini-Planet Daredevil Run
The Daredevil Comet must be in orbit in order to select this mission. The player will redo the Mini-Planet Mega-Run mission with only one health point. Fortunately, there are some Midway Points for convenience.
 Snacktime for Gobblegut
Players will redo the Mini-Planet Mega-Run mission. This time, players must defeat every enemy and collect the coins they drop. By the time players reach the Brr Bit Planet, they should have at least 20 coins. After feeding the Hungry Luma, it'll transform into a small, spherical planet. When players land on it, they will fight Fire Gobblegut, a fiery version of Gobblegut. However, the method to defeat him remains the same. After Fire Gobblegut is defeated, the player will earn the Power Star.
 Green Star 1
Players will redo the Mini-Planet Mega-Run mission. However, when players get to the Pumpkinhead Planet, they should backflip up onto the shield guarding the Warp Pipe. They should backflip once more to obtain the Green Star.
 Green Star 2
Players will redo the Mini-Planet Mega-Run mission. However, when players gets to the Undergrunt Planet, they should backflip up onto the shield guarding the Warp Pipe. They should backflip once more to obtain the Green Star.
 Green Star 3
Players will redo the Mini-Planet Mega-Run mission. However, when players get to the Silver Chomp Planet, they should backflip up onto the shield guarding the Power Star. They should backflip once more to obtain the Green Star.
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