Good Egg Galaxy
The Good Egg Galaxy (originally known as Egg Planet Galaxy) is the second galaxy Mario must venture to in Super Mario Galaxy. It is the first galaxy within the Terrace dome. The Good Egg Galaxy is one of the few galaxies with no set theme that continues to be visible throughout the planets. It has different planets with many contradictory themes much like a true galaxy. Dino Piranha and King Kaliente are the bosses in this galaxy. The Good Egg Galaxy has the most planets out of any other galaxy between the two games, having 19 planets total. The name of this galaxy is most likely a pun on "good egg", which means a reliable and pleasant person. The game cover of Super Mario Galaxy features five planets from the Good Egg Galaxy.
It is notable that the original E3 demo and gameplay footage mostly featured segments from the Good Egg Galaxy, along with a mixed-in level from the Space Junk Galaxy. Several Gusty Garden Galaxy planets were also found in this galaxy from the beta version of the game.
 Starting Planet
The Starting Planet is multi-sided; there is a light side and a dark side. On the light side there is grass, trees and bushes with Star Bits and Coins hidden in them. There is also a pleasant house with two Octoombas guarding the front. There are two bridges, one on each side, that lead to the dark side of the planet. Inside the house there is a ? Coin which releases several Rainbow Notes that will play the underground theme from Super Mario Bros. when Mario collects them. After getting them all, a 1-Up Mushroom will appear.
The darker side of the planet has many dead trees with Star Bits in their branches and a constant rain of Star Bits coming down from above which makes it, arguably, the best location to get Star Bits in the galaxy. In the center of the planet there is a giant tower with a special side that bends the laws of Gravity and allows Mario to walk up. There is a Goomba guarding that side.
In the levels there will be Launch Stars placed in three different locations; where the launch star is depends on the level. In the missions "Dino Piranha", "Dino Piranha Speed Run" and "Luigi on the Roof" it can be found at the top of the tower and leads to the Boulder Planet, though in "Luigi on the Roof", Luigi is located on top of the house, so there is no point in taking the Launch Star. In "A Snack of Cosmic Proportions" and "Purple Coin Omelet", the launch star is located at the top of a set of three Pull Stars at the end of a stone walkway next to the tower and leads to a maze of three planets; the Tropic Planets and the Egg Planet. Finally, in "King Kaliente's Battle Fleet", the Launch Star is on top of the house and leads to the Tropic Planets.
 Boulder Planet
The Boulder Planet is a Peanut shaped planet with Boulders on it in "Dino Piranha" and "Luigi on the Roof". However, in "Dino Piranha Speed Run", they are replaced by Chomps. Mario can either dodge or destroy the Boulders with his Star Spin, but he cannot hurt the Chomps.
To get here, Mario must take a launch star from the Starting Planet and the only way to leave is to get the five Star Chips and create a Launch Star that takes Mario to the Bean Planet. This planet has a different color appearance when it is first seen, but it ends up appearing with a recolor in the final version of the game. It was originally supposed to be blue. A bug is seen where the boulders literally fly off the planet and when the player hits the planet they'll go hurling back to the Starting Planet.
 Bean Planet
This is a small, grassy planet with one Piranha Plant and a few Slurples as its only dangers because it is impossible to fall off this planet due to the gravity. On the bottom side of the planet there is a ? Coin which creates many Star Bits leading back to the Piranha Plant.
Mario will get here via a Launch Star from the Boulder Planet and then, to leave, he will have to stomp or spin the Piranha Plant to defeat it. After being defeated, the Piranha Planet will release a Sproutle Vine for Mario to climb to get to the Bitten Apple Planet
 Bitten Apple Planet
The Bitten Apple Planet, as its name states, resembles a green bitten apple. There are Boulders rolling all over the planet, and a large purple Piranha Plant on the top. There is a black hole in the middle of this planet which will make Mario lose a life if he falls in.
On this planet Mario has several choices as to where he wants to go. The first choice is to advance to the very end of the planet and battle a giant purple Piranha Plant which will release a Sproutle Vine to the Block-Climb Planet. The other choice is to go across a shrinking platform and using the Warp Pipe with the Piranha Plant in it to get to the Flip Switch Planet.
 Flipswitch Planet
The Flipswitch Planet is a planet covered in Flipswitches. It also has a few red platforms with spikes on the sides that can hurt Mario, but that he can also use to carry him across the Flipswitches. The planet can be accessed via a semi-hidden Warp Pipe from the Bitten Apple Planet. There are many Flipswitches here, and in order for Mario to continue, he must press all the Flipswitches in the first area before the Flipswitches in the second area will appear. After activating all the Flipswitches, a Launch Star leading to the Block-Climb Planet will appear.
 Block-Climb Planet
The Block-Climb Planet is a planet accessed by either launching off of the Flipswitch planet and landing here or taking the Sproutle Vine that comes out of the purple Piranha Plant on the Bitten Apple Planet. This planet is a grassy oval with three stone blocks on it and Octoombas guarding the rocks. There are some coins on the blocks which serve as steps to the very top where a Launch Star is waiting to take Mario to the Dino-Geo Planet. Behind the set of three stone steps, there is a 1-Up Mushroom to give Mario an extra life. Also on the planet are a Luma and several Starbags.
 Dino Geo Planet
The Dino Geo Planet is a small round planet that is the last planet visited in the levels "Dino Piranha" and "Dino Piranha Speed Run" as it is the location of the bosses in those levels; Dino Piranha.
The planet is basically a large brown oval with several yellow objects on the ground that, when shot with a star bit, will release a coin, and several Item Crystals with coins and star bits in them. On top of the planet is a giant egg that Mario will automatically crack open when he lands. Dino Piranha hatches, and the Boss Battle starts. After defeating Dino Piranha, the Power Star appears here. A similar planet appears in Super Mario Galaxy 2, in the Boss Blitz Galaxy. On that planet, Dino Piranha is fought once again as a returning boss.
 Super Mario Galaxy Trading Card Description
Landing on this planet seems unevental. That is, until Mario makes his way to the other side. He spies a giant walking egg with a tail sticking out-definitely something to be investigated. Spin Mario against the large ball on the end of the tail to crack open the shell. Out bursts Dino Piranha - the boss of this world, who Mario must battle to gain the first Power Star in the Good Egg Galaxy.
 Pear Planet
The Pear Planet is a pear-shaped planet covered in grass that appears in "A Snack of Cosmic Proportions" and "Purple Coin Omelet". There are several Star Bits in the Item Crystals all over the planet along with a few Goombas and Spiky Plants. There is also a Launch Star to the Rock Planet here.
 Rock Planet
The Rock Planet is a giant red rock with Boulders rolling all over it. It is accessible via the Pear Planet. The Launch Star on this planet takes Mario to the Egg Planet. The Rock Planet also has some Item Crystals and a ? Block. There is also a Sling Star that can launch Mario into a Coin.
 Egg Planet
The Egg Planet is a planet that resembles a giant Yoshi Egg with many Goombas wandering all over. Also, there are several Item Crystals. It is part of the three-planet maze involving the Rock Planet and Pear Planet. The Launch Star on this planet leads to the Pear Planet and it is accessible from the Launch Star on the Rock Planet.
The main attraction of this planet is the Hungry Luma that must be fed 100 Star Bits to transform into the new planet that is needed to complete the level; the Tower Planet.
 Tower Planet
The Tower Planet is a planet made by a Hungry Luma on the Egg Planet and is shaped like a giant mountain with many stone platforms that Mario must jump up to get to the top. Enemies found here are mostly Spiky Plants and Goombas. The Spiky Plants can be defeated by the rubbery, green Stretch Plants. At the very top of the many stone platforms is a Launch Star to the Pill Planet.
An almost identical planet with the same name appears in the Yoshi Star Galaxy in Super Mario Galaxy 2, the only difference being that the planet in that galaxy is already present, while the planet in the Good Egg Galaxy is formed by a Hungry Luma.
 Pill Planet
The Pill Planet is the biggest planet in the Good Egg Galaxy save for, maybe, the Magma Planet where King Kaliente is fought. It is shaped like a giant transparent pill with many enemies and obstacles on the inside including different sections where the gravity is shifted around; red means it goes away from the core, blue means it goes towards it.
When he first arrives here, Mario will be on the transparent coating of the planet from the Launch Star on the Tower Planet and he will have to destroy the Item Crystal to get inside. After making his way through all the obstacles, another Launch Star will blast him right through the glass and to the final planet of the mission; the Star Planet.
 Star Planet
The last planet of the second mission, which resembles a Sling Star. To get to the star, the player must collect Blue Star Chips to create some Pull Stars. Mario must then use the Pull Stars to get to the Power Star in the center of the Planet or he can simply Long Jump and Spin to get to the Star.
 Tropic Planets
The Tropic Planets are a pair of planets with Spiky Plants and Coconuts that can be put to different uses depending on which planet Mario is on. The planets are made up of a combination of sand and grass with scattered Palm Trees and Crates everywhere. On the first planet there are multiple spiky plants which Mario can destroy with a coconut, but to access the next planet, he must destroy the extremely large Spiky Plant at the top to make a Sling Star appear.
The second Tropic Planet has several Goombas and one Pokey. When the Pokey comes to the surface, Mario must hit its head with a coconut or hit its body, which will destroy a body segment and lower its head closer to the ground. After doing this a Launch Star will appear to send Mario off to the Saucer Planet. The first Tropic Planet is accessed by blasting off the Starting Planet in King Kaliente's Battle Fleet.
 Water Planets
The Water Planets are small rocks in the sky surrounded by water which float all around the Tropic Planets. They are inaccessible during the regular levels, but, through hacking, Mario can visit them as they have their own gravity field. Other than that they are mostly for ambience while Mario soars past them on his way to the Chomp Saucer Planet.
 Chomp Saucer Planet
The Chomp Saucer Planet is a large grass-covered planet that is accessed from the Tropic Planets and has an Item Crystal containing a Launch Star at the very end of it that leads to the Airships. Enemies on this planet include Octoombas, Bill Blasters, Chomps, Amps and Rocket Engines who make the planet much more difficult to cross. Probably the most notable difficulty on the planet is the electric barriers placed throughout that Mario has to cross. Once Mario finally reaches the end the Launch Star will take him to King Kaliente's fleet.
 Super Mario Galaxy Trading Card Description
Once Mario gets to the top of this planet in the Good Egg Galaxy, he finds it is littered with half-buried blocks. It's tempting to climb up to grab all the coins, but if he does, he becomes visible to his enemies. Mario needs to focus on the Launch Star, which is located on top of the Bullet Bill cannons and protected by Electrogoombas. Mario must spin them away to claim the prize.
 Octopus Airships
There are two Airships floating in space which are both commanded by King Kaliente and have many enemies on them. The first airship is able to be accessed from the Launch Star on the Chomp Saucer Planet and has two Octopuses firing coconuts at it from the second ship. If Mario defeats them both, the path to the bridge is opened.
At the end of the bridge there is a Sling Star that leads up into the main section of the ship where several Octoombas will attack. If Mario takes the Launch Star located on this ship he will travel to the Octo Magma Planet where he will battle the commander of both Airships; King Kaliente.
 Asteroid Planet
The Asteroid Planet is a small, optional, planet accessible from the Saucer Planet with two Chain Chomps rolling around it. The only thing here is a warp pipe which leads to the inside; a room with many Goombas and a Rainbow Star to help Mario defeat them and receive many Star Bits. In the beta version of the game, there were several planets like this one.
 Octo Magma Planet
The Octo Magma Planet is an extremely large stone planet with a pool of lava in the middle which is home to the boss of the level "King Kaliente's Battle Fleet", King Kaliente. This is the location of the King's boss battle as he emerges from the lava and fires coconuts and fireballs at Mario.
The planet is mostly made up of black tar and rock mixed together by the gigantic pool of hot lava in the middle. The rest of the planet is just simple hot rock. This planet is quite big compared to others like the Tropic Planets, since it needs to have a decently large size for the fight to be held. Underneath the Magma Planet is a rocky area with yellow rings on it like a target which resembles a chocolate donut. During missions in which the planet isn't normally visited, it is drained of its lava.
 Dino Piranha
Originally known as Prehistoric Piranha, this level begins on the Starting Planet with a grassy top and a house. There are two Octoombas guarding the door to the house (which does not open). The gravity on the starting planet is such that Mario cannot fall off so he can just walk over to the other side where it is all dark with a castle-like object. Mario must climb up the tower on a pathway, avoid the Goomba and talk to the Luma to get a Sling Star which sends him to a Launch Star. The next planet is the Boulder Planet, it has five Star Chips scattered around it, Mario must collect them all, while avoiding the boulders to get another Launch Star. The boulders are going around in rings and most of the parts that they roll over are made of mud. The five stars lead Mario to the next planet, the Bean Planet, where Mario must Star Spin the Piranha Plant after it strikes at him for it to release a sproutle. There is a large coin under the planet which releases many star bits.
Next up is the Bitten Apple Planet where Mario has a choice as to where he wants to go. The first option is to defeat a huge Piranha Plant then spin on the sproutle's vine or he can defeat the small Piranha Plant off to the side behind the Shrinking Tile and release a Warp Pipe which leads to the Flipswitch Planet. On the Flipswitch Planet, Mario must press all the blocks to obtain get a Launch Star which will bring him to the Block-Climb Planet (this is where the sproutle's vine would have brought him). There are two parts to the Flipswitch Planet, to unlock the next part, Mario has to press all the switches in the current part. The first part is just a square of spaces so Mario can easily press them and the second is a straight line followed by a square, followed by a square with another block. Mario must use his powers of jumping to get through the second part. He will then get to the Block-Climb Planet. To get to the top of the Block-Climb Planet, Mario must climb the moving stones to the top which have Octoombas on the them. There is a Starbag at the bottom of the Block-Climb Planet which Mario can kill to get many star bits. At the top of that planet there is a Launch Star which leads to the Geo Planet.
The Geo Planet is where Dino Piranha is fought, Mario will land on a gigantic egg which will then crack, releasing the prehistoric beast. To open the egg fully, Mario must Star Spin the tail which will fly back and crack the egg. Dino Piranha will then run after Mario and Mario must once again Star Spin the tail to hit it. The flower at the top of its body will turn red and it will charge extremely fast at Mario, if he manages to Star Spin the tail one more time, Dino Piranha will fall over and release a Power Star. Every time Dino Piranha is hit, it will release a mass of star bits for Mario to collect.
 A Snack of Cosmic Proportions
This level revolves around feeding a Hungry Luma 100 Star Bits, so the player should pick up as many as possible. Mario begins on the Starting Planet with two Octogoombas. There are constant comets on this planet and several Star Bits. the comets release about three Star Bits each. To complete this planet, Mario must travel to the end of a stone path where there is a blue Luma who will turn into a set of Pull Stars which lead to a Launch Star. The launch star sends Mario into a 3-planet circle with a maze of launch stars in midair the planets are the Pear Planet, Rock Planet and Egg Planet. The Egg Planet has the Hungry Luma but Mario must use the other two planets for Star Bits. When the Luma is fed, it will burst with snacky happiness creating the Tower Planet. Mario must climb this planet to the top to reach another Launch Star which will launch Mario straight to the Pill Planet. There is an Item Crystal covering the entrance to the inside of the pill planet so Mario must smash it to get inside.
The inside is a platform area which Mario must navigate very carefully as there are constant gravity shifts. Blue arrows mean the gravity is pulling down and red arrows mean the gravity is pulling up. Avoid the shifting gravity and get to the Launch Star which will blast Mario through the glass and to the Star Planet which has five blue Star Chips that create five pull stars which Mario must use to get the Power Star in the very middle of the planet. Another option is to Long Jump to the Power Star.
 King Kaliente's Battle Fleet
Mario starts on the same planet as he did on the previous two missions. The Launch Star is on the top of the house on the Starting Planet and it is possible for the player to triple jump to the top of it, or else Mario can take the orange Warp Pipe on the underside of the planet and traverse the boxy room to reach the Launch Star. Next up are the Tropic Planets. The Toad on one of the planets tells Mario that the spiky plants hate coconuts. Mario will have to kick the coconuts into the plants, and one will reveal a Sling Star. The next tropic planet has a large Pokey, which can also be defeated by kicking a coconut at it, revealing a Launch Star. Then there's the Chomp Saucer Planet which has a Sling Star which propels Mario to a planet full of electrical walls, but if the player decides to stay on the planet they can enter a pipe to an area with a Rainbow Star and lots of Goombas. The player must carefully avoid the walls of the next planet to reach the other side of the planet, where cannons shoot Bullet Bills.
The Launch Star is in a crystal at the top of the structure on this planet. As Mario is launched onto an airship, two Octoombas will shoot coconuts at Mario from an adjacent airship. Mario will have to do a Star Spin to send the coconuts back at them to defeat them, which lowers the bridge between the two ships. The Launch Star on this airship that takes Mario to the Octo Magma planet. The player can defeat King Kaliente by repeatedly spinning back the coconuts he shoots at Mario.
 Dino Piranha Speed Run (Speedy Comet)
This level is just like the Dino Piranha level except for the fact that there is a four minute time limit to get to the Power Star. If Mario is not there in time, he loses. In this level, the boulders are replaced by Chomps on the Boulder Planet.
*In French version, every Speedy Comet level will contain "contre-la-montre" which means "time attack".
 Purple Coin Omelet (Purple Comet)
In this level, the player has to collect 100 Purple Coins to get the Power Star in the area of the three planets before the tablet-like planet in the 'Snack of Cosmic Portportions' with out the Hungry Luma planet. Mario must traverse through the galaxy and collect these coins using Launch Stars. Unlike most other Purple Comet missions (with the exception of Purple Coins in the Woods), the coins here follow a linear path - simply follow the trail of coins on the first planet, take the Launch Star, take the Launch Star in midair on the way, follow the path of coins on the second planet, etc. If the player repeats this process a few times, they will have collected every coin and will land right next to the Power Star.
 Luigi on the Roof
Shortly after Mario rescues his brother Luigi in the first mission of the Ghostly Galaxy, Mailtoad will inform Mario that Luigi has sent him a letter saying he is lost, with an enclosed picture of his whereabouts. The player can work out that Luigi is in the Good Egg Galaxy. To clear this hidden Star mission, the player must enter the mission Dino Piranha (after receiving the aforementioned letter) and reach the top of the mushroom hut on the first planet. The easiest method of reaching the top is simply doing a Triple Jump and Spin on top of it or doing a Somersault, a Wall Jump, then a Spin,. Another way is to walk around to the underside of the planet and enter the orange Warp Pipe there. After traversing the room, possibly gaining a 1-Up from collecting Music Notes, the player can jump through another orange Pipe and emerge on the top of the Hut. Luigi will give Mario the Star and the mission will be completed.
 Other Appearances
 Mario And Sonic At The Olympic Winter Games
Good Egg Galaxy is a stage in Mario & Sonic at the Olympic Winter Games. The galaxy is the stage of the Dream Event: Dream Ski Jumping. It features Airships, the Starting Planet, three Star Planets, and other things like blue crystals, the water planets and a Black Hole. The objective is to gather points in Star Bits. There are 3 types of star bits: green ones are worth 10 points, purple ones are worth 30 points and the rare orange ones are worth 50 points. There are also item blocks which can be used for further advantage in the event. In addition, there are also "Star Gates" on the galaxy. If the player goes through 3 Star gates, the player will be invincible and any points given to the player by collecting star bits is doubled for a short amount of time.
 Fortune Street
The Good Egg Galaxy appears as one of the boards for the Mario series in the game Fortune Street. Elements from the Galaxy are seen throughout the board. In Easy mode, the board has two long lines that connect in the middle by two other lines. In Tour mode, the player has to get 1st place against Jessica, Luigi, and Toad. The board doesn't have very high priced shops, so the likelihood of getting bought-out is very high.
This galaxy's theme plays in the Grandmaster Galaxy level the Perfect Run from Super Mario Galaxy 2, along with the Gusty Garden Galaxy theme, Bowser's Galaxy Reactor theme, and the Comet Observatory theme. A remix of the music can also be found in World 1's map after Green Star comets appear. Part of Good Egg Galaxy's music returns in Mario Kart Wii's Rainbow Road.
 Names in Other Languages