World S

This article is about the final world in Super Mario Galaxy 2. For the secret area in Super Mario World, see Special Zone.

“Wow! Can ya believe it?! This must be that strange, legendary world we've been hearing rumors about! There are even more Power Stars around here! So! Let's go get 'em, Captain!”

—Lubba, Super Mario Galaxy 2

World S: Here We Go!, also known as Special World, is the seventh and last world featured in Super Mario Galaxy 2. It is located high in the sky of an unknown planet with colorful star-shaped islands, and has two rainbows in the background. This world is shaped like an "S", hinting at its name, and has no forked directions. It holds a total of seven galaxies, the last of which, the Grandmaster Galaxy, can only be accessed by collecting all 120 Power Stars as well as all 120 Green Stars. Each galaxy is blocked by a star barrier (the most out of all worlds) that requires a certain number of Power Stars to unlock rather than simply completion of the previous galaxy. The world is unlocked after the player defeats Bowser for the first time. This is the only world in the game to lack any hidden stars, with each galaxy featuring one main mission, one Prankster Comet (with each type present and also the most out of all worlds), and (excluding the Grandmaster Galaxy) two Green Stars.

This world's appearance is hinted at by a Bob-omb Buddy brought back from the Throwback Galaxy, who asks about the "strange, legendary world" in a manner similar to Lubba's. This world's music is a slower rendition of Gusty Garden Galaxy's music from Super Mario Galaxy.

All of the galaxies in this world except for Flip-Out Galaxy are references to previous Mario games. Mario Squared Galaxy, Stone Cyclone Galaxy, Boss Blitz Galaxy and Grandmaster Galaxy (in the case of The Perfect Run, because of the music) are references to Super Mario Galaxy, Rolling Coaster Galaxy is a reference to the Rainbow Road courses from the Mario Kart series and Super Mario 64 (because of the music), and Twisty Trials Galaxy is a reference to "The Secret of Ricco Tower" from Ricco Harbor in Super Mario Sunshine.

Galaxies

Galaxy	Description	Star(s)	Unlocking criterion
Mario Squared Galaxy	This galaxy takes place on an 8-bit Mario, which also appeared as a planet in the Toy Time Galaxy from the first game. However, the spinning platforms have been replaced with Flipswitch Panels. An 8-bit Luigi appears on the opposite side and serves as a Purple Coin level.		Defeat Bowser in Bowser's Fortified Fortress.
Rolling Coaster Galaxy	This galaxy is similar to a roller coaster and, similar to Rolling Masterpiece Galaxy, Mario (or Luigi) must roll a Star Ball to the end. Also, many Starshrooms appear along the way.		Collect 75 Stars, including the first one from Mario Squared Galaxy.
Twisty Trials Galaxy	This galaxy is heavily based on the Episode 4 mission The Secret of Ricco Tower from Ricco Harbor in Super Mario Sunshine. The only major changes are that there is now a single Cloud Flower in the first mission, Yoshi in the second, and some of the spinning logs are larger.		Collect 80 Stars, including the first one from Rolling Coaster Galaxy.
Stone Cyclone Galaxy	This galaxy consists of only one planet, which is essentially a replica of the Cyclone Stone from the Beach Bowl Galaxy in Super Mario Galaxy. Some differences include the addition of Octoombas, the removal of the last Thwomp, and the addition of multiple blue switches at different intervals around the planet.		Collect 90 Stars, including the first one from Twisty Trials Galaxy.
Boss Blitz Galaxy	This galaxy pits the player against five bosses from the first game (for a total of ten boss fights including the Prankster Comet mission, the most out of any world). The player faces off against Dino Piranha, King Kaliente, Major Burrows, Bouldergeist and Fiery Dino Piranha, in that specific order. It contains six planets surrounding a white dwarf star.		Collect 100 Stars, including the first one from Stone Cyclone Galaxy.
Flip-Out Galaxy	This the final galaxy unlocked before the player obtains 240 Power Stars. The galaxy uses the same concept as the Flip-Swap Galaxy from World 1, except that instead of controlling Red-Blue Panels, the player controls reversible walls. In this regard, it combines the mechanics of the Flip-Swap Galaxy with Wall Jumping.		Get 110 Stars, including the first one from Boss Blitz Galaxy, then feed the Hungry Luma on the World S map 2000 Star Bits.
Grandmaster Galaxy	This galaxy is analogous to the Grand Finale Galaxy from Super Mario Galaxy because the player must collect all 240 Power Stars and Green Stars to unlock it. This is the only Galaxy where Green Stars do not appear because the player has to collect all of the Green Stars in the game in order to unlock this galaxy.		Collect the 240 Stars and Green Stars.

Gallery

• 

  World S as viewed from the Grand World Map

• 

  The World S pathway

Names in other languages

Language	Name	Meaning
Japanese	World S (World Map) レッツゴー　スペシャルワールド！ (File Select Menu) Rettsu Gō Supesharu Wārudo!	- Let's Go, Special World!
Chinese	邁向 World S！ Màixiàng World S!	Proceed into World S!
Italian	Mondo S: Un Mondo Speciale da Scoprire	World S: A Special World to Discover
Spanish (NOA)	Mundo Extra: Un mundo secreto por descubrir	Extra World: A secret world to discover

Trivia

Mario in the cutscene

• This is the only world in the entire game where every galaxy has two regular missions, and all but one have two Green Star levels.
• No galaxy in this world has a Teleporter that leads to a Bonus Planet.
• During the introduction cutscene, Mario can be found as a little dot right next to the Boss Blitz Galaxy.