The Haunty Halls Galaxy is a galaxy in the game Super Mario Galaxy 2. It is featured in World 3: The Far Reaches Of The Universe. Like its predecessor, the Ghostly Galaxy from Super Mario Galaxy, it has a ghostly theme. The planets are shaped as hallways full of many enemies including Boos. This galaxy is the debut of a new type of power-up known as the Bulb Berry, a yellow fruit that Yoshi can eat to transform into Bulb Yoshi. This power-up allows Mario to see invisible platforms.
A Glimmer of Bulb Berry
Sneaking Down the Creepy Corridor
Spooky Cosmic Clone Chase
The player has to complete Mission 2: Sneaking Down The Creepy Corridor while Cosmic Clones chase Mario endlessly. The Boo Diddleys have been removed to make the level easier.
Green Star 1
Green Star 2
Redo Mission 1: A Glimmer Of Bulb Berry. On the Moving Platform Planet, Mario must pull off a well-timed Triple Jump to get the star. One error and Mario may fall to his doom.
Green Star 3
This planet is the first planet on the level A Glimmer of Bulb Berry. This planet is a long hallway with some Octoboos blocking the path. The long hallway leads to a part on land with a Launch Star that launches Mario to the second planet. In the second mission, an extra section is added with the Boo Diddley chase.
Moving Platform Planet
This planet has platforms moving into a wall. It is the second-longest planet. As its alternative name implies, the platforms disappear into the walls it has. There are many hallways on this planet to walk through until Mario finally reaches a Launch Star. There is a teleporter, a Warp Pipe, and a checkpoint flag.
Hidden Halls Planet
This planet starts with a visible floor with a Yoshi Egg and a Bulb Berry. Bulb Yoshi must be used in order to progress. There are a number of Bulb Berries scattered around the planet. There is also a door blocking the way, and the only way to open it is to find a key. There are several enemies on this planet, including Octoboos and Smeeches.
Creepy Corridor Planets
This area is based on a typical haunted house. It is featured in Mission 2: Sneaking Down The Creepy Corridor. The largest planet in the area is reused in the Clone Comet mission. Mattermouth resides here, eating platforms in his way.