World 4 (Super Mario Galaxy 2)

“We've sure come a long way, thanks to your efforts! Let's keep this good thing going, am I right? The helm is yours, Captain!”

—Lubba, Super Mario Galaxy 2

World 4: The Many Mysteries of the Cosmos is the fourth world in Super Mario Galaxy 2. It is located near a spiral galaxy. It holds seven galaxies, the last of which, Bowser's Gravity Gauntlet, features the second encounter with Giant Bowser, who again attacks Mario on a small planet, though now with several new moves. The Hungry Luma galaxy is available right when the player enters, which does not happen in any other world.

Galaxies

Galaxy	Description	Star(s)	Unlocking criterion
Supermassive Galaxy	This galaxy depicts many common Mario enemies and elements at an extraordinary size. Some include Piranha Plants, Lumas, coins and Platforms.		Defeat Bowser Jr. in Bowser Jr.'s Fearsome Fleet.
Flipsville Galaxy	This galaxy is home-themed, with many dollhouse-like planets. The main gimmicks in this galaxy are flipping platforms known as grates, which the player needs to perform a Ground Pound to turn these platforms over and flip the gravity to gain access to different areas.		Get the first Star from either Supermassive Galaxy or Sweet Mystery Galaxy.
Starshine Beach Galaxy	This galaxy is beach-themed and has some elements from the game Super Mario Sunshine's Isle Delfino, including Piantas that can hurl the player to other parts of the galaxy and a statue similar to the Grand Pianta Statue in Delfino Plaza.		Get the first Star from either Flipsville Galaxy or Honeyhop Galaxy.
Chompworks Galaxy	This is the only galaxy to revolve around the use of the Spring Mushroom. Gearmos inhabit the area. Chomps, as the galaxy's name implies, are the most common enemy here, usually blocking the path to a Launch Star.		Get the first Star from either Flipsville Galaxy or Honeyhop Galaxy.
Sweet Mystery Galaxy	This glaxy consists of different types of food and sweets, such as ice cream, pancakes, lollipops, candy canes, pretzels and donuts. Most of the platforms here are invisible and can only be revealed using Bulb Yoshi. Common enemies here include Smeeches and Choppahs. The galaxy entirely revolves around the use of Bulb Berry.		Feed the Hungry Luma on the World 4 map 1200 Star Bits.
Honeyhop Galaxy	This level revolves around the use of the Bee Mushroom. Honeybees are found throughout the level and teach Mario on how to use the Bee Suit. The level also features honey walls, which Mario can traverse as Bee Mario. Queen Bee is also found in this galaxy, as are many Choppahs and Octoguys.		Get a Star from Supermassive Galaxy.
Bowser's Gravity Gauntlet	This level is based entirely on gravitational forces. Most of the level involves sidescrolling, except for the beginning and the end. The level is covered in lava, but there is one part where Mario will need to swim through water to get through the level. Magikoopas are common enemies here and can summon Li'l Cinders at will. Firebars are placed throughout the whole level, even underwater. Fireballs also defy gravity because they can change direction in midair. When Mario reaches the end, Bowser will challenge Mario to a battle.		Get 40 Stars, including the first one from either Starshine Beach Galaxy or Chompworks Galaxy.

Gallery

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  World 4 as viewed from the Grand World Map

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  The World 4 pathway

Names in other languages

Language	Name	Meaning
Japanese	World 4：ふしぎのせかい World 4: Fushigi no sekai	World 4: A World of Wonder
Italian	Mondo 4: Gli Infiniti Misteri del Cosmo	World 4: The Infinite Mysteries of the Cosmos
Spanish	Mundo 4 : En Busca de los Misterios del Cosmos	World 4: In Search of the Mysteries of the Cosmos