In the very beginning of Story mode, a comet is shown flying through space at extremely fast speeds. It is clearly on a collision course with a planet. The camera zooms in on the comet, and it appears to be the Comet Observatory. Inside, all of the Lumas are panicking and Rosalina is trying to steer the Observatory away from the planet. However, the Comet just keeps hurtling down towards a specific piece of land on the planet... Mario is sitting on a picnic blanket with Princess Peach. They are, of course, having a picnic. However, the picnic takes place at night, and they are sitting under the stars. Peach points up at the comet and says, "Mario, it's beautiful!" Mario looks at the comet and realizes that the comet is going to hit the castle, which is not far. Mario runs to the castle.
Level 1: Saving the Creatures of the Castle!
In this level, there is only one thing to do. Mario has to run through the castle, and warn all the Toads to escape. There is a five-minute timer running, and either when the comet hits the castle or all the Toads escape, a cutscene occurs. In the cutscene, the Comet hits the castle with Mario still inside. The screen fades to black, and it fades back in with Mario on the ground, and Captain Toad, Peach, Rosalina, and Luigi are looking at him. The white Luma from the previous game is hovering over Rosalina's head. Rosalina then pulls Mario to his feet and explains that Bowser attacked the Comet Observatory, and that it spiraled out of control. She says that she is sorry, and then asks if he will help her, Captain Toad, Peach, and Luigi find Power Stars to help fix the Comet. Mario agrees.
The only functioning part of the Comet Observatory is what shoots you to other planets and brings you back. Therefore, the damaged Comet Observatory is the game's hub.
To move, use the circle pad. To jump, press the A button. To spin jump, press A after jumping. To switch characters, use the touchscreen.
Good Egg Galaxy
This galaxy has three Power Stars. The first one, Savior of the Yoshisaurs, involves you getting to the top of Saddle Mountain and defeating Mega Petey Piranha in a mini-boss battle. After defeating him, Yoshi will hatch and thank you. As a gift, he will give you a Power Star. The second Power Star, Hot Hot Yoshi!, is found on top of the Berry Volcano. To get to the top, Yoshi must eat Red Berries found in bushes on the side of the volcano to run to the top of the volcano before it erupts. When reaching the edge of the crater, a cutscene where Yoshi and whoever you are playing as jump over to the Power Star and get it plays. The third Power Star is found in the Cheep Cheep River, which is at the bottom of the Canyon of the Crystals in the stage Surfer Dudes!. To get to the Power Star, you and Yoshi have to break a crystal out of the canyon and surf down the river on it, avoiding jumping Cheep Cheeps. At the very end of the river is the Power Star. After obtaining all three Power Stars from this galaxy, Yoshi will appear on the Damaged Comet Observatory.
- This version of the Good Egg Galaxy has clearly experienced extreme seismic activity, due to a volcano, mountain and canyon being pivotal points in the level.
Giga Goomba Galaxy
This galaxy has two Power Stars. The first one is found in The 10,000 Score! In this, you have to jump on Giga Goombas all the way to the Power Star. Every time a Goomba is bounced on, an 8-bit 100 will appear on the top left part of the screen. If done correctly, you will have bounced on enough Giga Goombas for the score to reach 10,000. If you have reached 10,000 at the Power Star, the level will be successful. If you are not at 10,000, you will get a Game Over!. The second Power Star is in Giga Stampede. In this level, you has to get to the Power Star without being run over by stampeding Giga Goombas.
- A galaxy similar to this one appears in previous installments.
Colossal Koopa Galaxy
This galaxy has two Power Stars. The first Power Star is found in The Colossal Koopa-tastrophe!. In this level, you have to get past all of the Colossal Koopa Troopas to get to the Power Star. It is a fairly easy level. However, the second level, Colossal Koopaling?!, is much harder. Ludwig von Koopa is a giant version of himself, and he has to be fought in a mini-boss battle. After defeating him, he will explode and become a Power Star.
- A galaxy similar to this one appears in previous installments.
- Giga Goomba Galaxy is similar to this one.
- Colossal Ludwig von Koopa is the first mini-boss to become a Power Star upon being defeated.
This Galaxy has four Power Stars. The first one is found in The Rainiest Day in Lylat History. In this level, you are introduced to the weather-controlled Lylat people. Normally the planet Weatroll II is very sunny, but a huge rainstorm has been going on for a long time. The Lylats' attitudes are influenced by the weather, so all the Lylats are gloomy and lazy. The planet is falling into disrepair, so you have to go up into the atmosphere and stop the mini-boss Giga Lakitu and his Lakitu minions, who are causing the weather. After defeating Giga Lakitu, the rain disappears and the now happy and active Lylats award you with a Power Star. The second Power Star is found in An Ashy Day With the Lylats. In this level, ash from a volcano that has recently erupted covers the sky, and the Lylats become gloomy again. You have to go to the volcano and plug it up so that no more ash will come out. To plug the volcano, you have to find the Big Bullet Bill Gun and shoot a Big Bill into the volcano's top crater. Then the ash will disappear and the Lylats will return to normal. They will once again give you a medal. The third Power Star is found in The Snow of Sedation. In this level, you go to another planet in the Lylat Galaxy called Weatroll I. On this planet, another Lylat colony is having problems. Heavy snow is coming in, and snowy weather makes the Lylats tired. You have to travel once again into the atmosphere and stop Larry Koopa from forcing a Snow Cloud Creature to create snow at the expense of it's own life. After defeating Larry, the snow cloud creature thanks you and shows you how to ride on it. After riding down to the surface, the Lylats ONCE AGAIN give you a Power Star. The fourth Power Star appears in The War-Torn Lylats of Weatroll XII. In this level, you travel to Weatroll XII, where a solar flare is hitting the planet. The solar flare is causing the Lylats to have extremely short tempers and just be all-around mean and jerky. You have to find the snow cloud again and together they stop the solar flare. The Lylats return to normal, and you find a Power Star that was created by the remains of the solar energy. The Snow Cloud creature will appear on the Damaged Comet Observatory after getting all four Power Stars from this galaxy.
- This is the second galaxy to have a volcano involved in a level's plot.
- Lylat is the name of a place in Star Fox.
Bowser Jr.'s Galactic Energy Converter
There is one Grand Star available here. It is in the level The Super Stomper Bot!. This is a boss stage. After landing on the machine, you have to get to the top of it. On the top, converted energy is being put into a giant robot. Bowser Jr. sees you and explains that his robot, the Super Stomper Bot, ran out of fuel. He asked his daddy to give this machine to him, which converts the galaxy's natural energy into fuel for his robot. The robot becomes completely fueled up after he finishes talking, and then Bowser Jr. gets inside. You have to avoid the robot's four legs, which are constantly trying to stomp on you. Every time a leg stomps, a spring pops out of the leg. You have to pick the spring up and hold it above you, and when he stomps it on you, the spring will propel him backwards and he will fall. Every time the robot falls, it gets more damaged. After it falls six times, the robot will start to explode. Bowser Jr. escapes just when it explodes, and a Grand Star will come from the wreckage. You take the Grand Star, and the Grand Star will fix the Damaged Comet Observatory a little bit and make you able to go to farther galaxies.
Time Travel Galaxy (1)
There is one Power Star in this galaxy, but it is automatic and you do not choose which level to go to. When traveling to this galaxy, a cutscene plays where you get sucked into a portal and appear in a graphically-updated version of the classic Mario Bros. game. If you make it through ten phases, then you beat the galaxy, and a Power Star appears from a pipe.
- This is a one player only galaxy.
- Multiple galaxies with this title appear in this game.
There are two Power Stars in this galaxy. In the first one, Shattered Crystal, you are entering a planet when you get sucked inside a crystal. The crystal then gets struck by lightning, and you are released from the crystal. However, you have been divided into five different versions of yourself. Therefore you must go through the same level five times, and each time you go through there is a Star Shard at the end. After collecting all five Star Shards, you turn back to normal and collect the newly formed Power Star. The second star is found in Planet Division. In this level, the crystal has grown so large that it sucks up the planet. Lightning strikes the planet, and it is divided into five pieces. Mario must travel across the five Planet Shards to get to the Power Star.
- This is the first galaxy in which Star Shards appear.
There are seven Power Stars in this galaxy. The first one is found in Yoshisaurs the of Savior. In this level, you start out fighting Mega Petey Piranha and then must travel with Yoshi down Saddle Mountain. The Power Star is at the bottom of the mountain. The second Power Star is found in !Score 10,000 The. In this Level, you have 10,000 points and have to jump on Giga Goombas until the score subtracts to zero. If done correctly, the Power Star will appear. The third Power Star is found in !?Koopaling Colossal. In this level, Colossal Ludwig von Koopa has zero health, and every time you hit him he gains power. You need to hit him until he is fully healed to get the Power Star. The fourth Power Star is found in History Lylat in Day Rainiest The. In this level you have to go up into Weatroll II's atmosphere and attack Giga Lakitu until he makes it rain. You then obtain the Power Star. The fifth Power Star is found in !Bot Stomper Super The. In this level you have to build the Super Stomper Bot and then run away from Bowser Jr.'s Galactic Energy Converter. You then get the Power Star. The sixth Power Star is found in Division Planet. To get the Power Star, you have to travel across the planet shards and put the planet back together. The seventh Power Star is found in The Backtrack Lord's Master Plan!. In this level you have to travel through the Backtrack Lord's castle until he finds him. The Backtrack Lord reveals that he sent the levels that you created back in time for you to re-do. He laughs, and then you have to fight him as a mini-boss. After defeating him, he explodes and a Power Star comes out of him.
- The galaxy was originally going to be called the Negative Galaxy, and the Backtrack Lord was going to be called the Negative Lord.
Bowser's Rising Dead Machine
This galaxy has one Power Star and one Grand Star. The Grand Star is in Bowser and the Zombies. In this level, Bowser has resurrected his fallen Goombas and Koopa Troopas and is using them against you. You have to make it to Bowser and his machine without a zombie killing you. When you get to Bowser, he trash-talks you and then you fight him in a boss fight. When you beat him, he says, "Well played, plumber boy. I'll be back." He then escapes. When he escapes, his Rising Dead machine explodes and a Grand Star comes out of the explosion. When you get the Grand Star back to the Damaged Comet Observatory, it upgrades the system and enables you to fly to farther galaxies. The Power Star appears after beating the game and is found in Resurrection: a Little Too Far!!. In this level, you have to get to a resurrected King Koopa without zombie shellcreepers or zombie sidesteppers killing you. When you make it to King Koopa, the zombie koopa trash talks you and then you fight him in a boss battle. After beating you, he explodes and a Power Star comes from his remains.
- King Koopa's model is the same as Bowser's except with different colors.
- The zombie Goombas look just like the underground Goombas from Super Mario Bros..
Honey Honey Galaxy
There are three Power Stars in this galaxy. The first one is found in Honey Bee Hunt. In this level, you meet with Honey Queen in Honeycomb Castle, and she tells you that one of her subjects has gone missing. She asks you to find him, and you have to search the planet for him. When you find him, the now-found Jimmy Bee grabs you and flies both of you back to Honeycomb Castle. Honey Queen rewards you with a Power Star for finding Jimmy. The second Power Star is found in Return of the Chimp: Honeyball Bowling! In this level, there is a door-looking cut in a tree, and when you venture inside, the Chimp is there. He reveals that Bowser attacked him because he lost at a game, and this is the first game he's had since. He calls it Honeyball Bowling, and it's basically bowling with a ball of honey. If you get three strikes or spares in a row, you win and the Chimp gives you a Power Star. The third Power Star is found in the level Creators of Honey. In this level, Jimmy Bee gets sick and without him, the quotas for making honey are below average. The queen asks you to replace Jimmy Bee with the Bee Mushroom. You have to collect enough pollen to bring the quota back up, and when you do, Honey Queen rewards you with a Power Star.
- This is the first galaxy to feature the Chimp in it.
- This is the only galaxy to feature the Bee Mushroom in it.
Fluttery Flower Galaxy
There are two Power Stars in this galaxy. The first one is found in Butterfly Flutter Fly. In this level, the Power Star is way up high in the clouds, and you are tiny in comparison to the flowers and animals of the planet. You have to climb on flowers and fly on butterflies to get to the Power Star. The second Power Star is found in The Chimp's Butterfly Challenge!. In this level, the Chimp is found sitting on top of a butterfly. Once you find him, he explains that he has a game for you. The game is to make it for 200 seconds on top of a butterfly that has been covered in butter. Once you complete his game, he awards you with a Power Star.
Freezy Freeze Station Galaxy
There are three Power Stars in this Galaxy. The first one is found in the level Shields Up!. In this level, you travel to a space station that is monitoring the Freezy Freeze Galaxy. Professor E. Gadd is the captain of the station. After arriving, he explains that something is wrong with the shields on the station. They are failing, and the cold aura from the galaxy that they are studying is affecting the ship. He asks you to travel to the outside of the ship and repair the shields. You have to go out there and find five Star Shards. When you find them all, they form a Power Star and the star plunges into the shield generator. You head back into the ship, and E. Gadd says, "Well, if I knew that all it took was a Power Star, I would've used this!" And he takes a Power Star out of a safe hidden behind a picture of King Boo. He says that he doesn't really need the star and gives it to you. The second Power Star is found in King Boo's Icy Reign. In this level, King Boo comes out of the painting (64-style!) and turns the shields off manually. While the scientists on the ship freeze, he laughs, as he is immune to it. The king goes off to torment the scientists, and you have to make it to the control deck and turn the shields on in less than three minutes. When you turn the shields on, E. Gadd gets warm enough to get up and grab his Poltergeist Ultimate. He sucks King Boo inside it. E. Gadd thanks you and rewards you with another Power Star. The third Power Star is found in Bunny in the Air Vents!. In this level, the Luma from the beginning (who has been helping you get Star Bits and coins the whole time) gets restless and wants to play Hide-and-Go-Seek. Luma promptly turns into a Star Bunny and jumps into the ventilation shafts. You have to traverse the tunnels until you find the bunny. When you find Luma, he will transform back into Luma and offer you a Power Star. After getting the first two Power Stars, E. Gadd will appear on the Damaged Comet Observatory. After getting the final Power Star, Luma will become a playable character instead of collecting star bits and coins. However, whenever you play as Luma, he transforms into a Star Bunny, so that he can do more than a normal Luma can.
- The concept of the first level is similar to the plotline of the Doctor Who episode, "The End of the World".
- This is the first galaxy to feature a Star Bunny.
Freezy Freeze Galaxy
In this galaxy there are two Power Stars. The first one is found in The Great Sled Race!. In this level, you go into the actual Freezy Freeze galaxy and land on a planet. There is a sled race going on where the winner gets a Power Star. You have to win the sled race (your sled is really a Snow Cloud creature who made himself turn into a sled shape). When you win, you get the Power Star. All of your opponents in this race JUST HAPPENED to be penguins, by the way. The second Power Star is found in the level Bunny in the Snow. In this level, a Luma sees you and wants to play Catch the Bunny with you. The Luma then transforms into a Star Bunny and starts hopping away. You have to catch him, and he will give you a Power Star when you do.
- This galaxy was a plot point in the Freezy Freeze Station Galaxy.
Bowser Jr.'s Gobblegut Trap
In this galaxy there is one Grand Star. It is found in the level Black Holes Help. In this level, you have to make your way to Bowser Jr., and when you get there he summons Gobblegut. Gobblegut attacks as Bowser Jr. gets away. After his first attack, the planet is destroyed. A strange gun was buried in the planet, and it lands in your hand. Upon firing, it creates black holes. What you have to do is fire the gun to create a black hole. You have to be very precise, because you have to use the gravity of the hole to pull you towards one of Gobblegut's red spots. When you land on it, it will pop. Once you've destroyed all of Gobblegut's red spots, he will explode and become a Grand Star. When you get the Grand Star, it will upgrade the Damaged Comet Observatory and enable you to fly to farther places.
Breesy Beach Galaxy
In this galaxy there is one Power Star. It is found in the level Cosmic Mario and the Swim Race. In this level, you land on a beach, and Cosmic Mario is already there. He challenges you to a swim race, and if you win, he will give you a Power Star and leave.
Breaky Brick Galaxy
There are two Power Stars in this galaxy. The first one is found in the level Move Fast. In this level, there is a huge, twisting pathway of bricks, with an occasional part that is made of stone. At the end of the path, the Power Star can be seen. The trick is that every time you step on a brick, it will crumble, so you have to have a good strategy to get the Power Star. the second Power Star is found in The Chimp's Super Ball Challenge. In this level, The Chimp makes you get to the Power Star while balancing on a ball. The level is basically the same as the first one, except that you have to balance on a ball.
Time Travel Galaxy (2)
There is one Power Star in this galaxy, but it is automatic and you do not choose which level to go to. When traveling to this galaxy, a cutscene plays where you get sucked into a portal and appear in a graphically-updated version of the classic Super Mario Bros. game. If you either make it to the Warp Zone or beat Bowser in the final level of the first world, then you win and a Power Star will come up from a pipe or the lava, respectively.
- This is a one player only galaxy.
- Multiple galaxies with this title appear in this game.
Boo Who Galaxy
There are three Power Stars in this level. The first one is found in Haunted House Rescue Mission. In this level, the new power-up, the Owl-shroom, appears. The power-up enables you to turn into an owl. You land on an asteroid that houses a haunted mansion, and the owls that live in the forest next to it are freaking out. You can only talk to the owls with the power-up, and when you talk to them, they say that a baby owl is stuck in a room inside the mansion. You have to travel through the mansion, avoiding Boos, and find the owl. Once you find the owl, the screen fades out and back in. When it fades in, you are returning the baby, and the owls give you a Power Star in return. The second Power Star is found in Luigi-Only. In this level, Luigi has to suck all of the ghosts in the mansion up into his Poltergeist 5000. When he sucks them all up, the vacuum explodes and a Power Star comes out. The third Power Star is found in The Masked Crusader Versus Boos, which is only unlocked by putting a Lucina Amiibo onto the system while choosing the level. In this level, you go up into the mansion to find that a person in a mask is trying to fight the Boos with a sword. When you enter, the Boos turn and attack you, and you have to lead them into another room. After you do, the masked man approaches you and thanks you. He then leads you to a secret room that he found, which has a Power Star inside it.
- The Lucina amiibo is the one from Super Smash Bros. for Wii U.
There is one Power Star in this galaxy, and the whole galaxy is unlocked by putting a Skull Kid amiibo on the system. The Power Star is found in Skull Kid's Idea of Fun. In this level, Skull Kid makes you go through the whole first level again except upside down and with reversed colors and controls, and the moon is coming down instead of the Comet Observatory. After beating the level, Skull Kid personally comes up to you and gives you the Power Star, then disappears.
- The Skull Kid amiibo is a completely new amiibo.
The Chimp's Ten Challenges Galaxy
There are ten Power Stars in this galaxy. The first one is found in Reliving the Challenges: Ultimate Honeyball Bowling. In this level, you have to go through the Honeyball Bowling challenge again, except this one is harder because you have to bounce the ball off of walls and obstacles to get spares and strikes. The second Power Star is found in Reliving the Challenges: Extreme Butterfly. In this level, you have to fly on the butterfly for 250 seconds, and the butterfly is even more buttered-up. The third Power Star is found in Reliving the Challenges: Ultra Ball. In this level, you have to make it to the Power Star even faster because the bricks break faster and there are no stone rest areas. The fourth Power Star is found in Chimp and Skull Kid: Team Challenge!!. In this level, you have to join with either a CPU or friend (via wireless) to play a game of 2v2 basketball against Skull Kid and the Chimp. This level is only available if you have beaten the Negative Galaxy. The fifth Power Star is found in Mario Kart. In this level, you have to beat the Chimp in a race at the SNES Rainbow Road racetrack from Mario Kart 7. The sixth Power Star is found in Snowman. In this level, you have to build a snowman before the Chimp does. The seventh Power Star is found in Double Chimp. In this level, you have to juggle the Chimp and his brother for one minute without dropping them. The eighth Power Star is found in Mend the Pipes. In this level, you have to take a wrench and fix all the pipes. This one is hard because 30 seconds after you have fixed them, they break again. The ninth Power Star is found in Punch-Out!!: Chimp. In this level, you have to beat the Chimp in a Punch-Out-style boxing match. This level is unlocked by putting a Little Mac amiibo on the system during the level select. The tenth Power Star is found in The Chimp's Ultimate Riddle. In this level, the Chimp gives you this riddle: What does not walk but runs, what does not talk but has a mouth, what does not have money but has a bank?. There are five answers: a baby, a river, a waterfall, a planet, or a stopwatch. If you say the correct answer, you get the Power Star.
- The Little Mac amiibo is the one from Super Smash Bros. for Wii U.
Bowser's Hallucination Atmosphere
There is one Grand Star in this galaxy. It is found in the level Hallucionational Hormones. To get the Grand Star, you have to traverse a confusing maze created by Bowser that has tons of booby traps in it. After getting to the center of the maze, you have to face off against Bowser, except that you are constantly hallucinating during the fight. Sometimes you will see double, sometimes You will see upside down, and sometimes you will see things that aren't really there. On the latter, you can tell if they are real or not because hallucination substances are shiny and glistening. After defeating Bowser, he will escape and all of your hallucinations will come together to form a real Grand Star. After bringing the Grand Star back to the Damaged Comet Observatory, the Observatory will be upgraded and you will be able to travel to farther galaxies.
Clone Troopa Galaxy
There are two Power Stars in this level. The first one is found in Cloney-Woney Stuff. In this level, a peaceful village of Toads are being attacked by Koopa Troopas, and they just keep coming because Koopas are being cloned. You have to go and destroy the machine, and after it explodes, a Power Star comes from the wreckage. The second Power Star is found in Colossal Koopa Cloning. In this level, you have to do the exact same thing that you did in the past level, but the Koopa Troopas become Colossal Koopas.
Time Travel Galaxy (3)
There is one Power Star in this galaxy, but it is automatic and you do not choose which level to go to. When traveling to this galaxy, a cutscene plays where you get sucked into a portal and appear in a graphically-updated version of the classic Super Mario Bros. 2 (American version) game. If you make it through the level and defeat Birdo, the eagle's beak will open and the Power Star will come out.
- This is a one player only galaxy.
- Multiple galaxies with this title appear in this game.
- Mario is the only playable character in this level.
Curry Cloud Galaxy
There is one Power Star in this galaxy, and it is found in Snow Versus Fire. In this level, Mario lands on a planet that is inhabited by a subspecies of clouds, called curry clouds. Snow clouds and curry clouds are distantly related. Anyway, there is one Snow Cloud on the planet, and the extremely hostile Curry Clouds are attacking it. Your job is to defeat the Curry Clouds, which proves to be extremely hard because they rain fire. After defeating them, the Snow Cloud will show you a mountain path, and after following the mountain path (and fighting some koopas and Curry Clouds along the way), you will find the Power Star at the top of the mountain.
- The idea came to life when an employee at Float Island Inc. thought of words that started with "C". He thought of curry, and then thought of the snow Clouds from earlier on in the game. The story took off from there.
Dino Dino Galaxy
There are three Power Stars in this level. The first one is found in Yoshisaur. In this level, you find a piece of paper on the ground that says: Help! I've been taken by a Koopaling! -Yoshi. You have to make your way through the thick jungle while avoiding dangerous dinosaurs, and at the end you have to fight Larry Koopa in a mini-boss battle to save Yoshi. When he is defeated, he runs off and Yoshi rewards you with a Power Star. The second Power Star is found in Flight of the Dinosaurs. In this level, Larry returns and pushes a rock off of Dino Mountain, and it scares the dinosaurs and a stampede begins. You have to ride Yoshi and herd the Dinosaurs away from Jungle Cliff. Once to get them away from danger, Larry gets angry because you saved them and fights you in a mini-boss battle again. After defeating him, his wand flies out of his hand and magic sprays out of it. The magic washes over Larry, and he is transformed into the Power Star. The last Power Star is found in Fire. In this level, it is getting dark on the planet and Yoshi is getting cold. You have to go and find wood for a fire while avoiding dinosaurs and werewolves. Star Shards will also appear after you build the fire. When they appear, you have to find all five Shards without losing, because now the dinosaurs appear less and werewolves attack more. After getting all the Shards, they combine to create a Power Star above the fire.
- This is not the first time that Yoshi has been referred to as Yoshisaur in the game.
- The jungle in this galaxy is based off of Dino Dino Jungle from Mario Kart: Double Dash!!.
- The mountain in this galaxy is based off of DK Mountain from Mario Kart: Double Dash!!
Geary Clockwork Galaxy
This galaxy has one Power Star. In this galaxy, you visit a planet that is made of a clock. Everything on the planet is possible through the clock. One of the gears stops working, and the king of the planet asks you to go inside the clock and fix it. After avoiding Clocko Troopas, a robotic version of Koopa Troopas, and staying alive, you arrive to find that the Power Star is stuck in a gear.
Floating Islands Galaxy
This galaxy has three Power Stars. The first one is found in Bring the Islands Together. In this level, a sister species of the Lylats, the New Humans, are living on a bunch of islands that float above a black hole. One of the people on the islands, Austyn, says that some kind of psychic power is holding the planets up. The power is starting to fade, so the mayor of the islands want you to use a rope to connect the islands together so that workers can make the islands more stable. After doing this, the mayor awards you with a Power Star. The second Power Star is found in Restoring the Power. In this level, you have to journey inside the black hole to find the psychic creature that is holding them up. When you find it, it is actually Austyn, and he says that the Austyn on the islands was a hologram. He explains that he is running out of time and that he is going to die soon. You have to get Austyn out of the black hole and back onto the islands, and when you do, he is taken to the hospital to be helped. The mayor gives you another Power Star for finding and helping Austyn. The third Power Star is found in Donkey Kong and the Black Hole. In this level, Donkey Kong appears and breaks the islands up again, and you have to defeat him in a mini-boss battle. After defeating him, DK explodes and a Power Star comes from the wreckage. Before getting it, the islands begin to fall into the black hole, as Austyn's psychic abilities have worn off. You have to get to the hospital in 100 seconds to wake Austyn up or the islands will be sucked inside of the hole. When you wake him up, Austyn is fully healed and uses his powers to bring the islands back together and raise them up again. Then you can go get the Power Star.
- The whole galaxy is a reference to Float Island Inc. and The Psychic because the galaxy takes place on FLOATING ISLANDS that are being held up by AUSTYN'S PSYCHIC ABILITIES.
Really Far Throwback Galaxy
This galaxy has two Power stars. The first one is found in "This Seems Really Familiar..." which is a replica of SMB 1-1, then, there is a "Oh! I Remember Now!" that's a replica of SMB 1-2... even though there is a secret zone that leads you to a GIANT N.E.S. console in which you have to... burn all the trash. If you win, you will see the star moving from the end of the level to in front of you.
Bowser Jr.'s Bomb Forest
This galaxy has one Grand Star. It is found in the level Bombs Away!. In this level, Bowser Jr. has taken refuge on a planet, and he has planted a forest of bomb trees around his fortress. You have to make it through the Bomb Forest without being blown up, fight the enemies in the fortress, and then get in Bowser Jr.'s spare Koopa Clown Car to fight him. After defeating him, he falls out of his clown car and the clown car goes out of control and hits a bomb tree, which sets off all of the bomb trees. You get away on the Clown Car and the planet explodes. A Grand Star comes from the wreckage. After beating this galaxy, the Koopa Clown Car appears in the Damaged Comet Observatory. After getting the Power Star, the Damaged Comet Observatory is updated so that you can go to farther galaxies. Polari reveals that the Comet Observatory only needs one more upgrade until it is fixed.
- Jarred came up with the concept for the galaxy.
Time Travel Galaxy (4)
There is one Power Star in this galaxy, but it is automatic and you do not choose which level to go to. When traveling to this galaxy, a cutscene plays where you get sucked into a portal and appear in a graphically-updated version of the classic Super Mario Bros. 3 game. If you make it through the first level, at the end, the box will have a Power Star inside instead of a card.
- This is a one player only galaxy.
- Multiple galaxies with this title appear in this game.
- Mario is the only playable character in this level.
Dodge Flight Galaxy
There are two Power Stars in this galaxy. The first one is found in Asteroid Flight. In this level, a penguin on a small planet challenges you to see if you can successfully fly through an asteroid field. You then have to do it. After you make it through, the penguin will reward you with a Power Star. The second Power Star is found in Asteroid Race. In this level, the penguin challenges you to a flight race through the asteroid, and you have to beat him. When you win, he gives you the Power Star.
- The penguin calls the Power Star "The Star of Power".
Treasure Shores Galaxy
There are five Power Stars in this galaxy. The first one is found in Shy Guy's Treasure Hunt. In this level, Shy Guy is a pirate and you have to help him find treasure on Shy Guy Beach. When you find the treasure, there is gold and a Power Star inside. Shy Guy takes the gold and lets you have the Power Star. The second Power Star is found in Cosmic Mario's Treasure Theft. In this level, Cosmic Mario steals Shy Guy's gold and you have to help Shy Guy get it back. After you chase Cosmic Mario for a bit, you have to fight him in a mini-boss battle. After defeating him, he drops the treasure chest and explodes into a Power Star. The third Power Star is found in Treasure Trap. In this level, a secret pyramid is found on the island and you decide to explore it. There are lots of traps (and Dry Bones) in the pyramid, and when you get to the center, you find the Power Star. The fourth Power Star is found in Tricks and Traps. In this level, Shy Guy betrays you when you get on his ship, and you have to escape the dungeon area that he traps you in and avoid all of the tricks and traps he has on the ship. At the end, Shy Guy catches you, and you have to fight him in a mini-boss fight. After defeating him, he will give you a Power Star as an apologize gift. The fifth Power Star is found in The Greatest Sand Castle. In this level, Iggy Koopa has made a huge sand castle, and you have to journey through it. Once you make it to the top, you have to fight Iggy in a mini-boss battle. When you win, he will explode and become a Power Star.
- The beach is based off of Mario Kart: Double Dash!!'s Shy Guy Beach racetrack.
Bob-Omb Battlefield Galaxy
This is the final galaxy in normal story mode, and it hosts one Grand Star. In this level, the Comet Observatory gains enough power to fly to a giant planet shaped like Bowser. After flying there, you must start out on the foot and work your way up to the mouth. Along the way, enemies from every single galaxy attack. Once you make it to Bowser's mouth, you have to travel inside and avoid fire balls. Once you make it deep enough, all of the Koopalings attack you. Once you defeat them, Bowser Jr. and Kamek attack you, and after defeating them, you have to travel deeper. Once you make it to the deepest part of the Bowser planet, there is a gate, and once you destroy all of the locks that are on it, it opens to reveal a black hole. You get sucked in. The screen goes static, and when it comes back into focus, you are on a huge planet at the gate to Bowser's castle. After walking in, you have to avoid a fire-breathing Bowser statue. As you keep going, Thwomps that move try to hit you, and you have to keep running while avoiding them until you reach the lava river. After crossing it, you have to go through a room with paintings of Bowser. After that, you walk through the courtyard and cross another lava river. After crossing the bridge, you have to climb to the top of a tower, where Bowser is waiting. You have to fight him in a boss battle. You have to grab him and spin him around and throw him off the tower, 64-style. When you throw him the first time, his Koopa Clown Car saves him, and then explodes once he gets back on the tower. After the second time, Kamek saves him. After Kamek saves him, Kamek passes out from overexhaustion and falls into the lava. The third time you do this, he just falls. You start celebrating, but then Dry Bowser jumps up from the lava to fight you. You have to spin him around enough for all of his bones to fly off the tower and into the lava. After this, Dry Bowser's skull burns to reveal a Grand Star inside of it. After you get it, you bring it back to the observatory and it gets fixed. The game ending shows everyone flying off into space, searching for a place to redo the picnic that was ruined.
- The Bowser planet part was originally Exotoro's idea.
- The Bowser's Castle in this galaxy is based off of Bowser's Castle from Mario Kart 64.
- After beating this level, if you put a Bowser amiibo on, Dry Bowser will become a playable character.
After beating story mode, a new quest begins.
After landing on the star-shaped planet Popstar, Mario, Luigi, Peach, Captain Toad, and Rosalina spread a picnic blanket out to have their picnic when King Dedede comes and attacks them. He attacks Mario and his overalls become tattered and torn, the red on his shirt becomes darker. He attacks Luigi, and his overalls become tattered and torn, and his shirt is completely ripped off to reveal a white undershirt. Peach is attacked, and her dress is ripped at the bottom so that it is tattered at the bottom. Captain Toad is attacked and his backpack is stolen. Rosalina is attacked so that her dress is ripped at the bottom and her sleeves are ripped as well. Dedede also takes the food and runs. After this, Kirby and Meta Knight arrive and apologize for Dedede. They say that he is stealing everyone's food for an unknown reason. All of them join into a group to go and get the food back.
Level 1: Green Greens
Dedede sends enemies after you, and you have to make it through the level to the end, where you have to fight Whispy Woods. After defeating Whispy, you can go to the next level.
Level 2: Castle Lololo
Dedede runs into Castle Lololo, and you follow him, just to find a maze with all kinds of traps in it. After you make it through the maze, you have to fight Lololo and Lalala. After defeating them, you can go to the next level.
Level 3: Bubbly Clouds
You have to chase Dedede through the clouds without being struck by lightning. After you make it through the storm clouds, Dedede gets away while you fight Krako. After you defeat Krako, you can go to the next level.
Level 4: Dedede Arena
When you get to this level, Dedede is standing in a wrestling ring, demanding a fight. To hurt him, you have to jump on his head, disorienting him, and then take his hammer (press A) and hit him with it (A again). After doing this six times, he will retreat, leaving all of the food in the arena. After defeating this level, a cutscene is shown where Kirby and Meta Knight get on the Comet Observatory after returning the food to everyone in Dream Land. The Comet Observatory crew then flies off in search of another picnic spot.
More coming soon!