World 1: Lineland
Lineland is a world with its sky littered with mathematical formulas using Mario items. A lot of things are introduced in this level. Firstly, here Mario meets Bestovius who gives Mario the ability to switch dimensions. Also, here Mario meets Thoreau, the hand Pixl.
Lineland road
here Bestovius gives Mario the power to interchange between dimesions. The place is set in a grassy plains with tall pipes and lots of bricks.
Mount Lineland
This level tests Mario on how to put his new ability to use. His ability comes in handy a lot when going to the top of Mount Lineland. At the top he reaches Yold Town. He meets Red the Bridgemaster who lets him cross the bridge to reach Yold Town. He then meets Green the Bridgemaster who will not let down the bridge until he gets Old Man Watchitts's approval. He will not allow it until Mario finds Thoreau. WHen Mario crosses the bridge the level is over.
Yold Desert
Yold Desert is an Area in Lineland. It is a desert area that is the only way to proceed to Yold Ruins. There, Mario fights his first boss, O'Chunks. After defeating him, Mario finds a blue platform. The player must press the 1 button and the minus button at the same time to open up the gateway to Yold Ruins.
Yold Ruins
Yold Ruins is the setting for the 4th level of Lineland. There are a lot of locked doors and puzzles in the ruins. Eventually, Mario comes to the top and encounters himself with Fracktail, a giant mechanical dragon. Dimentio puts a spell on him turning him evil and therefore forcing Mario to destroy him. When Mario does, he walks into a room where he finds the ghost of Merlumina. After a very LONG conversation, Merlumina gives Mario the Pure Heart.
World 2: Gloam Valley
Gloam Valley is the setting for world 2. You only see the valley in the first level because all the other levels take place in Merlee's Mansion.
Gloam Swamp
In this level, Mario has already recruited Peach and this level puts her to the test. A lot of the puzzles here will require her gliding ability. The entire level is set with an everlasting sunset. Near the end of the level Mario and Peach meet Boomer, the bomb Pixl.
Merlee's Mansion
Merlee's Mansion is the setting for the rest of the levels in World 2. The mansion was taken over by Mimi, one of Count Bleck's minions. Mimi tricks Mario into falling into all of the basement traps but Mario gets out nevertheless. The mansion is crawling with complex puzzles and be a little frustrating sometimes. Eventually the player will stumble upon a key using the 3-D ability. This will open the locked door at the end.
Merlee's Mansion
At the beginning of the level, Mario knocks down an expensive vase. Mimi is infuriated and puts Mario on a 1,000,000 rubees debt. Even though the entire thing is a trick to keep Mario a slave forever, Mario does not know this and therefore forcing the player to pay the debt. Mimi tells Mario, Peach, and Tippi that they can earn the money by jumping up and down on the blocks. After searching, the player will find a secret treasure chest with Slim inside. He is essential for completing the level. Instead of jumping up and down on the blocks (which would take a VERY long time), the player can jump up and down on the blocks until he earns 100 rubees. He can then pay one of the workers in exchange for the passcode to the VIP room which is a more efficient way of earning Rubees. After earning 10,000 Rubees in the VIP room, the player can pay another worker in exchange to the passcode to the secret vault. You need Slim to get past the electric moving walls. The vault has exactly 1,000,000 rubees in it.
Merlee's Basement
After paying the debt, Mimi offers Mario a contract as Merlee in disguise. It doesn't matter if the player agreed or not, because it was soon clear that it was all a trick. Mimi then turns into her true invincible form as a giant, spider-like creature. Since Mario cannot attack her, Mario must run through the maze of doors in the basement until he finds an invisible staircase. He uses Tippi to make it visible. He then has to go into the girls' bathroom and finds the real Merlee. Soon after, Mimi bursts in in her Merlee form. The too clash and soon Mario couldn't tell who was who. Then, suddenly, a game show is hosted by the InterNed to figure out the real Merlee. Mario asks five questions and at the end has to choose who is the real Merlee. No matter who he chooses, he has to fight Mimi. Merlee runs out of the room and chants a magical enchantment that takes away Mimi's invincibility. After defeating Mimi, Merlee gives Mario the third Pure heart.
World 3: The Bitlands
The Bitlands is a pixelated world. In the beginning Tippi gets captured by the geeky chameleon, Francis. Mario has to go across the Bitlands to save her at Fort Francis.
The Bitlands
The Bitlands is the first level of World 3. At the beginning, Tippi is captured by Francis. The barrier Pixl, Barry, overhears everything from behind a bush. Barrt explains to Mario how to get to Fort Francis even though he is doubtful that he'll get there anyway. After that Mario continues the level until the end where he encounters Bowser. Mario has to fight Bowser before getting him on the team.
The Tile Pool
The Tile Pool is a pixelated ocean where bowser's fire-breathing ability comes in handy. Here, the gang meets Thudley, the ground pounding Pixl. He first identifies the character girth points then joins the team. The player encounters many blooper tentacles. At the end it becomes clear that they were the Big Blooper's tentacles. At the end you must fight it.
The Dotwood Tree
The Dotwood Tree is a humongous pixelated tree that the Mario and the crew must climb up. First they must climb up the outside of the tree. Then, they go inside the tree. Finally, when they get to the top, they must fight Dimentio, one of Count Bleck's minions. After, they must ride the red wind that carries them to the star block.
Fort Francis
Fort Francis is the last level of the Bitlands. At the beginning, the door is locked and Mario must search for the key. After, Mario finds the door where Tippi is but it is locked with two keyholes. Mario must find the keys in Francis' secret rooms. During the level, Mario encounters Carrie, who helps Mario cross the pit of spikes. Even when the two keys are found, the door will not let anyone except Peach in. Francis attempts to impress Peach using his dating simulator. Peach uses Boomer to blow up his laptop. After, Francis is fought. When he is defeated, Tippi is freed from her cage. Tippi becomes so happy that Mario went across the world just to save her. Suddenly, a Pure Heart bursts out of Tippi. Afterward, Tippi keeps an upbeat and friendlier attitude.
World 4: Outer Space
When going through the door that leads to outer space, Mario realizes that he cannot breathe. The player is forced to go to Flipside to find a space helmet. After finding a fish bowl, the crew returns to outer space.
Outer Space
Soon after Mario returns to outer space, he sees strange SOS signs emitting from somewhere. After following the source, Tippi uncovers a spaceship revealing a strange, alien-like creature named Squirps. Squirps serves as blaster that can break bricks and defeat enemies. Tippi does not have very good thoughts about him as she finds him untrustworthy. Squirps will ask Mario to build up all the energy possible to create a Squarp hole to the Whoa Zone. No matter how much energy is built up it is never enough and they are nowhere near the Whoa Zone. The rest of the level consists of a Squarp hole maze.
Planet Blobule
Planet Blobule is the setting for the second level of World 4. The fact that Mario can walk on it without a helmet suggests that it has an atmosphere. The planet allows Mario to jump very large heights. At the beginning of the level, Squirps has to go to the bathroom very badly. He finds an outhouse but it is occupied by Fleep. Mario and the crew must go and search for toilet paper so Fleep can get out. They then buy the Ancient Clue from a citizen of the planet. Mario gives the Ancient Clue to Fleep who uses it as toilet paper. Fleep claims to have waited there for 100 years for toilet paper. Mario recruits Fleep who is necessary for completing the level.
Outer Limits
After progressing a little through the level, Mario and the gang encounter a door with a hole the shape of Squirps. Squirps feels the uncontrollable urge to be wedged in there. After being wedged in there the door opens and Mario finds a similar door with two holes the shape of Squirps. After Squirps is squeezed into one of the holes, he claims that he is hungry and that he cannot work if he's hungry. Mario must then go through another maze of Squarp Holes to find a supermarket with chocolate. Anything else Squirps will throw away. After feeding Squirps is fed, he splits in two and fits into the two sockets. Mario then proceeds to the Whoa Zone.
Whoa Zone
The Whoa Zone, according to Squirps, is an impossible maze. Right before starting the Level, Squirps runs off unexpectedly rendering Mario without guidance. Mario must run across walls and ceilings to get past the Whoa Zone. Near the end of the level, Mario encounters Mr. L. First, he must fight Mr.L in person. Then he reveals his giant Robot, Brobot. They go into outer space again to defeat Brobot. After defeated, Mario enters a room with Squirps at the foot of a Statue of Squirpina XIV. He explains that he is the son of Squirpina XIV and gives Mario the Pure Heart.
World 5: Land of the Cragnons
The Land of the Cragnons is a world inhabited by Cragnons. Cragnons are cavemen-like people who live in small rock homes. In the beginning the Cragnons are captured by Floro Sapiens.
Downtown of Crag
After appearing in midair in downtown of Crag, two Cragnons take him to see the Elder. The Elder explains to Mario their problem. Suddenly, two Floro Sapiens capture the Cragnons. Mario makes his way through the level, chasing the Floro Sapiens to the Gap of Crag.
Gap of Crag
After chasing the Floro Sapiens through the beginning of the Level, the Floro Sapiens go through a warp pipe which is then blocked off by a large yellow block. Mario must find the 3 element tablets and place them in the correct order at the top of Mount Crag. While searching, Mario encounters O'Chunks again. When defeated, Dimentio brainwashes him with a Floro Sprout and takes him away. When found and placed in the correct order, the hammer-like Pixl, Cudge is unlocked. He is able to break the yellow block and proceed to the next level.
Floro Caverns
At the beginning of the level, Mario meets Flint Cragley, a famous explorer. He had the key to the door that Mario needs to go through but sadly left it with one of his crewmen. Of course, Mario has to go search for them. When he eventually does find them they find out that Flint had it in his pocket the entire time. While Mario was searching, he discovers the ugly truth-the Floro Sapiens were brainwashing the Cragnons!
Floro Caverns
As Mario and the party delve deeper into the caverns, Mario saw small pipes and doors he couldn't fit in and futuristic laboratories. After solving some puzzles, he meets the shrinking Pixl, Dottie. As he goes through the level, he encounters O'Chunks this time brainwashed and improved. It is definitely more difficult to defeat O'Chunks this time around. Nevertheless, when he is defeated, he drops the Floro Sprout so that Mario can trick the security scanner. After solving a puzzle in the next room, Mario must fight King Croacus IV. When defeated, it becomes clear that the Floro Sapiens were only trying to protect their species. The Cragnons were throwing trash into the water they drank. But King Croacus IV gives them the the Pure Heart to make things better.
World 6: Sammer's Kingdom
Sammer's Kingdom is an all-fighting world. It is the only world that cannot be completed until the game is completed.
Sammer's Kingdom
Here, King Sammer explains the Duel of 100. He will only give the Pure Heart when completed. In this level, Mario must defeat enemies 1-25. Towards the end of the level, though, the Sammer Guys are too tired to fight and Mario can proceed without fighting. Mario can come back when the game is completed to fight them without them getting tired out.
Sammer's Early Duels
Mimi disguises herself as King Sammer. She tells them the Pure Heart is in a treasure chest. When Mario opens it, though, it explodes although Mario seems unfazed by it. Mimi becomes annoyed and the player must fight her. When defeated, the heroes realize that she was only stalling until the Void sucked the entire world up. The heroes attempt to complete the Duel anyway, but are too late. The entire world is sucked up. After completing the game, the player can come back and defeat Sammer Guys 25-50.
World of Nothing
The World of Nothing is a blank world with the occasional remnants of Sammer's Kingdom. After walking for a long time, they find the Pure Heart but it has turned to stone. Suddenly, Mr. L appears and steals the Pure Heart. The player must fight an upgraded versiion of the Brobot, Brobot L-Type. When he is defeated, he drops the Pure Heart and the heroes take off with it to Flipside. After asking Merlon for advice, he admits that he doesn't know what to do. Out of nowhere, Dimentio appears and makes them all disappear.
Sammer's Proving Grounds
This level is only accessible after completing the game. The player can defeat Sammer Guys 51-75.
Sammer's Endgame
This level is only accessible after completing the game. The player can defeat Sammer Guys 76-100.
World 7: The Underwhere
When Mario wakes up he finds himself in the Underwwhere. The Underwhere, otherwise known as World -1, is the place where all characters go when they get a game over. He does not have Peach or Bowser by his side. While venturing a little through the Underwhere, he finds Queen Jaydes, the ruler of the Underwhere. She requests that Mario find Luvbi, a fairy-like creature. She suggests that he looks at the bottom of the River Twygz. Instead of finding Luvbi, he finds a frightened Luigi, huddled up in a corner. It is here that Luigi joins the party. Luigi is able to jump the high pipes and find Luvbi. When they return to Queen Jaydes, she has already revived the Pure Heart. She sends Mario and Luigi back to Flipside. Mario is rejoined with Tippi snd the Pixls. When MARIO PUTS THE Pure Heart in the Heart Pillar and goes through the door they end up in the Underwhere.
The Underwhere
When Mario and Luigi go back to Queen Jaydes, she sends them off to the Overthere with Luvbi so that she can return with her father.
The Underwhere Road
This road connects with the the Overthere Stair. The entire road is shrouded with darkness but after recruiting Bowser, he can light up torches. Here they must go through three doors. The first door asks questions that at first seem complicated, but then asks a question that has nothing to do with what he had just said. The second door has to do more with memorizing the shapes and patterns which can be a little difficult. The third door will summon the Underchomp and the heroes will have to fight it. During the trek through the Underwhere road, Mario and Luigi must fight Bowser, who thinks that Mario and Luigi took her. After re-recruiting Bowser, the heroes meet The Three Hags. They will each ask for favors, but only one of them is required. In return, she gives you the door key.
The Overthere Stair
Level 7-3: The Overthere Stair - After the heroes make it out of the Underwhere Road, they end up in the stair that connects to the Overthere. It is a complicated maze of clouds. While trekking through the Overthere, they find Peach asleep against a tree. They all try futile attempts to wake her up. Then, Luvbi explains that she had eaten the golden fruit, a fruit that puts anybody to a deep sleep for 100 years. The only way to cure her was to feed her the Taboo Fruit. Unfortunately, there are a lot of fruit trees and Luvbi does not know which one it is. The heroes must try every possibility. They eventually feed her the Black Fruit which wakes her up. After venturing the Overthere stair a little more, they meet a cloud. He says that is he feeds him the right type of fruit he'll grow very big and bouncy. It is required that Mario find the right fruit to feed the cloud. When he feeds him the Red Fruit, he turns big and bouncy. He can then bounce to the end of the level to the Overthere.
The Overthere
Level 7-4: The Overthere - The Overthere is similar to the Overthere Stair only with an orange sky. After going through the Overthere (and unfreezing a lot of Nimbis), heroes meet Whibbi, the Nimbi sage. He explains that before they would've been able to chase the bad guys but they had destroyed the bridge. The only way to rebuild it is too get the Red Orb, Blue Orb, and the Yellow Orb from Rebbi, Blubbi, and Yebbi. When rebuilt, the heroes encounter a Spiky Skellobit. He summons an army, but then Rebbi also summons an army. As the battle takes place, the heroes access Grambi's place. When inside, they find Bonechill, the Chappter 7 boss. They discover that Luvbi is a quintessence of the Pure Heart. When Bonechill is defeated, Luvbi turns back into the pure heart (after a lot of family drama about not telling Luvbi about the entire thing).
CaStle Bleck
Castle Bleck is the Last world. It is a castle with blocks with see-through decorations and torches. It is inside the Void.
Castle Bleck Entry
Catle Bleck Entry is the beginning of World 8 and the setting for 8-1. Towards the end of the level Bowser fights O'Chunks. He ends up victorious but soon after the ceiling comes crashing down. Bowser is not able to withstand its weight for long. Just when he is about give in, O'Chunks supports him. Both are telling each other to leave, but both refuse. Eventually, the ceiling comes down on both of them. Mario, Luigi, and Peach are unable to return to the room.
Castle Bleck Foyer
Castle Bleck Foyer is the setting for 8-2. During the level, Mimi disguises herself as Merlon and tells the heroes to hit the "totally unsuspicious" ! block. The way she says it suggest to most people that it is a trick but the player is forced to hit the block anyway. When hit, the players fall in pit and must figure out a puzzle to get back up. When they get back up, Peach engages in battle with Mimi. When Mimi is defeated, they both are dangling from a giant wall and fall. Like before, Mario and Luigi are unable to go back into the room.
Castle Bleck Interior
Castle Bleck Interior is the setting for 8-3. In this level, there are many Dimentio Illusions, puzzles, and blocks. When they meet up with Dimentio, they will have to chase him through several chapters. When they are back at Castle Bleck, he makes an offer to team up and defeat Count Bleck. Tippi gives several warnings not to agree. On the final offer, if the player agrees, Dimentio puts a Floro Sprout on both Mario and Luigi, enslaving them. This results in a game over. If the player says no, Luigi will fight Dimentio. When he is defeated, he will appear to commit suicide with Luigi alongside him. Again, Mario is unable to return to the previous room.
Castle Bleck Inner Sanctum
Castle Bleck Inner Sanctum is the location of the last chapter in the game. The puzzles in this level are extremely difficult in this level. In the end, the player must fight Count Bleck. But before fighting him, Peach, Bowser, and Luigi come back to hrlp Mario. At first, he is invincible with the power of the Chaos Heart. But then, Mario uses the power of the Pure Hearts to defeat the power of the Chaos Heart. After that, Count Bleck is relatively easy, which can be a little suspicious. But when he is defeated, it becomes clear that the real final boss is not Count Bleck but Dimentio who has been plotting against him the entire time. He imprisons Tippi, Count Bleck, and Nastasia. to Dimension D. He activates the Floro Sprout he had planted on Luigi after their battle, turning him into Mr. L once again. He fuses himself, Mr.L, and the Chaos Heart into Super Dimentio. For the first part, he is entirely invincible. Then, back in Dimension D, the Pure Hearts activate once again because of true love and friendship (yeeesh! So wishy-washy!). The Pure Hearts heal the player and takes of the invincibility of Super Dimentio. When he is defeated, Count Bleck explains that Dimentio left a shadow of control over the Chaos Heart. It can only be conquered by true love. Since Count Bleck (Blumiere) and Tippi (Timpani) love each other, they sacrifice themselves to save the world.