World 12 (Dr. Mario World)

World 12 is a candy-themed world in Dr. Mario World. The first area is available as of 2 AM PT on Feb. 3, 2020, while the second area, challenge stages and special stage are available as of 11 PM PT on Feb. 19, 2020.

When an area is cleared, Ant Troopers and Stingbies appear. The viruses featured in the regular stages are red, green and light-blue.

Stage names in bold red text are labelled as hard stages in the game.

Area 1

Image	Stage	Best Doctors	Overview
	Stage 441	Dr. Baby Daisy Dr. Waluigi	The objective of this stage is to eliminate all viruses and collect all keys. The middle column has the key and door, separated by Brick Blocks. On the left and right sides, viruses are found with dust viruses above them, with Brick Blocks and Empty Blocks on the left and right columns on each side.
	Stage 442	Dr. Larry Dr. Ludwig	The objective of this stage is to collect all virus coins. In this stage, crates surround the red and light-blue lock blocks, with a green lock block in the middle of the stage. Additionally, colorful crates surround viruses on two or three sides at the top and bottom rows, each in front of a virus coin. The cages hold additional viruses along with ice fans, along with four larger virus coins behind some of the viruses.
	Stage 443	Dr. Toad Dr. Fire Rosalina	The objective of this stage is to eliminate all viruses. In this stage, barrels are located in the middle of the stage in a "+" formation and diagonally toward the center. The former group are viruses while the latter group are exploders. A diamond of dust are found surrounding the middle barrels, containing viruses and exploders. Additional viruses surround the barrels.
	Stage 444	Dr. Larry Dr. Donkey Kong	The objective of this stage is to eliminate all viruses, collect all pink coins from Brick Blocks and destroy all barriers. This stage contains colorful crates on the leftmost two columns and the rightmost two columns, along with barries in the middle three columns and four surrounding flasks in the corners. The topmost Brick Blocks contain hidden viruses while the rest contain coins. Additional viruses are found along the two bottom-most row containing crates. Filled flasks in this stage will shoot out exploders.
	Stage 445	Dr. Rosalina Dr. Ludwig	The objective of this stage is to eliminate all viruses. This stage has both viruses and Capsule Plus capsules occupying the spaces between crates. Some viruses, some crates and all Capsule Plus capsules are fully-frozen. Capsule Plus numbers can decrease even though it it frozen.
	Stage 446	Dr. Rosalina Dr. Fire Mario	The objective of this stage is to eliminate all viruses and collect all keys. In this stage, four rows of barrels with viruses in between each of the two rows are in the way of the keys and doors. The barrels in this stage contain one key, one lock and two viruses in each column, except for the middle column where only viruses are found.
	Stage 447	Dr. Bowser Jr. Dr. Kamek	The objective of this stage is to eliminate all viruses and destroy all barriers. In this stage, barriers, viruses, lock blocks and Capsule Plus capsules are found in bubbles. Brick Blocks are found separating viruses, lock blocks and Capsule Plus capsules in groups of two, two of them behind cages. Barriers in bubbles will not change state until it pops.
	Stage 448	Dr. Dolphin Dr. Roy	The objective of this stage is to eliminate all viruses and collect all purple coins. In this stage, purple coins are found in the top row above Floatie Viruses, with additional Floatie Viruses near caged purple coins in bubbles, which are next to crates that require one hit to destroy. Purple coins are unlocked in the following sequence: Topmost row of coins. The row of coins in bubbles initially found in the sixth row. The rest of the coins in bubbles initially found in the eighth row.
	Stage 449	Dr. Koopa Troopa Dr. Kamek	The objective of this stage is to eliminate all viruses and collect all pink coins from Brick Blocks. In this stage, Brick Blocks form a pinwheel, with additional viruses shrouded in clouds. Of the Brick Blocks, eight contain coins, four near the middle contain ice fans, while the rest contain viruses.
	Stage 450	Dr. Bowser Jr. Dr. Fire Peach	The objective of this stage is to collect all keys. In this stage, the keys are found at the leftmost and rightmost columns. Floatie Viruses in bubbles are found, with most of them on the leftmost and rightmost columns. All Brick Blocks except those found in the second-from-right column contain either shells or exploders. Filled flasks in this stage will shoot out either shells or exploders. This stage will scroll for one line each time enough objects are cleared, and will stop after 9 lines are introduced.
	Stage 451	Dr. Ludwig Dr. Dry Bowser	The objective of this stage is to eliminate all viruses. This stage contains lock blocks shrouded in clouds each above a crate and three bubble viruses and three spaces below exploders in cage, with each exploder surrounding fully-frozen viruses. Barrels are found in columns not containin the bubbles, and they all contain viruses. Additional viruses are found below the barrels.
	Stage 452	Dr. Fire Peach Dr. Dry Bowser	The objective of this stage is to collect all keys. This stage is shaped like two keys formed by Brick Blocks. The bow of each key formation is formed by cages, with a hidden lock block found in the middle Brick Blocks. Shells are found in the Brick Blocks in the same row as the lock block at the bit of each key. The other Brick Blocks not initially in cages have hidden viruses and Floatie Viruses.
	Stage 453	Dr. Dry Bowser Dr. Fire Peach	The objective of this stage is to collect all virus coins. This stage is formed by four quadrants, each with barriers and viruses that cover each virus coin. The bottom-left quadrant ones are covered in dust while the bottom-right quadrant is covered in clouds. A shell is found in the middle of the stage, also covering a virus coin.
	Stage 454	Dr. Dry Bowser Dr. Bowser	The objective of this stage is to eliminate all viruses, including any that appears from flasks, and destroy all Brick Blocks. This stage contains Brick Blocks next to viruses and Capsule Plus capsules, where the Brick Blocks found in the top six rows are half-frozen. The filled flask in this stage will shoot out either viruses or Capsule Plus capsules.
	Stage 455	Dr. Luigi Dr. Bowser	The objective of this stage is to collect all pink coins from Brick Blocks. This stage is shaped like a "W" formed by Brick Blocks and colorful crates. Barriers, both normal and in bubbles, are found in both halves. All Brick Blocks contain coins.
	Stage 456	Dr. Peach Dr. Daisy	The objective of this stage is to collect all keys. In this stage, all lock blocks are found in the topmost row, with two of them blocked by doors and another next to cages that require at least one of the other lock blocks cleared in order to properly match the lock block. In the same columns as the doors and lock blocks, bubble viruses are in the way of the keys. Additional half-frozen viruses are found in the second, middle and eighth columns.
	Stage 457	Dr. Ludwig Dr. Wario	The objective of this stage is to eliminate all viruses. In this stage, a ring of exploders in cages are surrounded by barrels, with the lock block found in the bottom row. All barrels contain viruses. The Brick Blocks in bottom-most row, topmost row and the sides contain hidden ice fans.
	Stage 458	Dr. Dry Bowser Dr. Bowser Jr.	The objective of this stage is to eliminate all viruses. In this stage, diagonal lines of viruses and barrels are found, along with a few Capsule Plus capsules. Most viruses and all Capsule Plus capsules are encased in bubbles. All dust and barrels contain viruses.
	Stage 459	Dr. Wario Dr. Fire Peach	The objective of this stage is to collect all virus coins. In this stage, there are cages holding Floatie Viruses, with its corresponding lock block found in the barrel. Additional Floatie Viruses are found in clouds. Half-frozen viruses are found in the row below the barrel, with some ice fans found above and below them. Virus coins are found behind the half-frozen viruses and scattered among where the cages are. Exploders are found surrounded by crates and cages. Filled flasks in this stage shoot out either exploders or Floatie Viruses.
	Stage 460	Dr. Larry Dr. Daisy	The last stage of the first area, the objective of this stage is to eliminate all viruses, including any that appears from flasks, and collect all keys. In this stage, the bottom four rows contain rows of viruses (normal, in barrels, half-frozen) with a gap in between each of them, and the five rows above it have viruses contained in all undamaged barrels and most Brick Blocks. Two keys and three exploders are found in a few of the Brick Blocks. Followed by this, the five undamaged barrels in a row all contain keys, along with six doors directly above them. In the section above the doors, colorful crates are arranged in a pattern where Floatie Viruses and Capsule Plus are found in the larger gaps, while the lock blocks are found in the smaller gaps that unlock the colorful crates in the leftmost column, which are located below the door. Filled flasks in this stage will shoot out either viruses or viruses shrouded in dust. This stage will scroll for one line each time enough objects are cleared, and will stop after 9 lines are introduced. When cleared, the rest of the first area in the world map gets cleared of viruses. Players also obtain the Ant Trooper assistant upon completing this stage.

Area 2

Image	Stage	Best Doctors	Overview
	Stage 461	Dr. Wario Dr. Bowser Jr.	The objective of this stage is to eliminate all viruses. In this stage, barrels are found surrounding light-blue viruses in bubbles and two exploders. The barrels contain green viruses in the same rows as the light-blue viruses, and red viruses in the others.
	Stage 462	Dr. Wario Dr. Ludwig	The objective of this stage is to eliminate all viruses and destroy all barriers. In this stage, the left three columns and the right three columns are each lined up with two columns of barriers with one column of viruses in between. The middle three columns contain ice fans and viruses in alternate rows.
	Stage 463	Dr. Kamek Dr. Peach	The objective of this stage is to collect all virus coins. In this stage, only the odd-numbered columns are filled. Each column contains a key, a door, three viruses and Brick Blocks where two of them contain a key and a door. Virus coins are lined up to occupy all columns except the middle column. The filled flask in this stage will shoot out Brick Blocks.
	Stage 464	Dr. Larry Dr. Roy	The objective of this stage is to eliminate all viruses. In this stage, colorful crates form an outline of a diamond, and viruses are found near the outline of colorful crates. A barrel containing a virus is in the middle of the stage, connected by colorful crates on the west and south and by Floatie Viruses on the north and east. Crates form a border around the structure.
	Stage 465	Dr. Dry Bowser Dr. Ludwig	The objective of this stage is to eliminate all viruses and collect all pink coins from Brick Blocks. In this stage, the 7x7 formation is occupied by viruses and four fully-frozen Brick Blocks (each containing coins) near the center. The viruses are either frozen (mostly fully-frozen) or hidden in barrels. Empty Blocks are found on the left and above the formation.
	Stage 466	Dr. Larry Dr. Roy	The objective of this stage is to eliminate all viruses and collect all keys. In this stage, viruses, cages and lock blocks of the same color are grouped together, with red at the bottom, light-blue in the middle and green at the top. Colorful crates and a door are locked behind cages. Crates occupy the other parts of the stage.
	Stage 467	Dr. Dry Bowser Dr. Roy	The objective of this stage is to eliminate all viruses and destroy all crates. In this stage, a lot of crates are found, with the middle ones requiring more than one hit to destroy. Two viruses surrounded by barriers are found in the top-left and top-right corners, and two viruses are each found in the bottom-left and bottom-right corners. Filled flasks in this stage will shoot out exploders.
	Stage 468	Dr. Fire Peach Dr. Roy	The objective of this stage is to eliminiate all viruses and collect all purple coins. In this stage, Floatie Viruses in bubbles are found directly below the purple coins. Crates surround a number of viruses in the middle and a couple of skill chargers at the top. Purple coins are unlocked in the following sequence: All coins in the eighth row. Left two coins in the first row and right coin in the fifth row. Rest of the coins found in the first and fifth rows.
	Stage 469	Dr. Larry Dr. Ludwig	The objective of this stage is to eliminate all viruses and collect all keys. In this stage, viruses form the border of the formation, with the ones on left and right sides fully-frozen. In the middle rows of the formation, keys and doors (both half-frozen) are found, and colorful crates occopy the rest of the formation.
	Stage 470	Dr. Roy Dr. Dry Bowser	The objective of this stage is to collect all purple coins and virus coins. In this stage, purple coins (caged and uncaged) are found next to crates connected diagonally. The center feature purple coins in a diamond formation. Two virus coins are found on each side, with one found in the center. The order in which purple coins are unlocked are in the following sequence: The coins found within the left two columns and right two columns, and second to third rows and seventh to eighth rows. The coins found within the top two rows and bottom two rows, and second to third columns and seventh to eighth columns. Eight coins forming a diamond in the middle.
	Stage 471	Dr. Diddy Kong Dr. Baby Peach	The objective of this stage is to eliminate all viruses. In this stage, Empty Blocks form a pathway that are occupied by viruses and barriers.
	Stage 472	Dr. Koopa Troopa Dr. Wario	The objective of this stage is to collect all purple coins and collect all pink coins from Brick Blocks. In this stage, most purple coins are locked behind cages, with the green lock block in the middle of the green cages and the light-blue lock block in one of the green cages. The Brick Blocks found near the green lock block and the Brick Blocks in the topmost row contain coins. The other Brick Blocks contain hidden viruses. The order in which purple coins are unlocked are in the following sequence: All purple coins initially found in the green and light-blue cages. The bottom row of coins.
	Stage 473	Dr. Larry Dr. Ludwig	The objective of this stage is to eliminate all viruses and destroy all colorful crates. In this stage, the are nine sections arranged in 3x3, each having a 3x3 formation. Each section in the corners and the middle contain half-frozen viruses surrounding a colorful crate. The other sections contain colorful crates surrounding exploders covered in dust, with one side open.
	Stage 474	Dr. Bowser Dr. Larry	The objective of this stage is to eliminiate all viruses, destroy all barriers and collect all keys. In this stage, the leftmost and rightmost columns have colorful crates between the keys and doors. Shells are also found between barriers, with two shells in line with an Empty Block and thus are obstructed by it. Two rows of four viruses are confined with one side open, with one side in Empty Blocks and one side with both Empty Blocks and crates.
	Stage 475	Dr. Roy Dr. Ludwig	The objective of this stage is to eliminate all viruses and collect all purple coins. In this stage, bubble viruses and fully-frozen viruses are found, with additional hidden viruses in Brick Blocks in the fourth and sixth columns. Purple coins are all half-frozen, with four of them surrounded by crates.
	Stage 476	Dr. Fire Mario Dr. Bowser	The objective of this stage is to eliminate all viruses and collect all keys. In this stage, rows of barriers and a lock block are between the key and the door. Clearing the lock block unlocks the ice fans on the left side, while the ice fans on the right side are always active. Crates are found in the row below the door and the row above the key where it initially appeared.
	Stage 477	Dr. Waluigi Dr. Ludwig	The objective of this stage is to collect all virus coins. In this stage, crates and viruses are arranged in a checkered pattern, with some viruses encased in bubbles, shrouded in clouds, half-frozen, fully-frozen and covered in dust. Virus coins that are sized 3x3 are found behind all but the center of the formation.
	Stage 478	Dr. Bowser Jr. Dr. Dry Bowser	The objective of this stage is to eliminate all viruses and collect all purple coins. In this stage, barriers are in the formation of brackets, and barrels containing viruses are found within and below it. Purple coins on the left and right columns beginning from the third row all the way down are encased in bubbles, with other purple coins are found in the first and second row. Exploders are located in the topmost row.
	Stage 479	Dr. Mario Dr. Wendy	The objective of this stage is to eliminate all viruses and collect all pink coins from Brick Blocks. This stage is shaped like a flower in a pot. The topmost row of Brick Blocks contain hidden viruses, three of them Floatie Viruses. With the exception of the three Brick Blocks in the middle, the other Brick Blocks contain coins. The filled flask in this stage will shoot out Brick Blocks.
	Stage 480	Dr. Larry Dr. Wario	The final stage is a scrolling stage that requires all viruses to be eliminated and all purple coins to be collected. In the beginning portion of this stage, barrels are found next to fully-frozen viruses, each containing colorful crates. Above the section with barrels are lines of viruses between colorful crates occupying two rows. Above that are two rows containing lines of Floatie Viruses between crates. In the section above, purple coins and viruses are found between colorful crates. More purple coins are found two rows above that section. Purple coins are unlocked in the following sequence: Coins in the row revealed after the stage scrolled up once. Coins in the row revealed after the stage scrolled up twice. Coins in the row revealed after the stage scrolled up thrice. Coins in the row revealed after the stage scrolled up six times. This stage will scroll for one line each time enough objects are cleared, and will stop after 7 lines are introduced. Once it is cleared, the remaining area of the stage map gets cleared of viruses, and players can access World 13. Upon completion, players earn a free Staff Ticket that lets them unlock either a new doctor, a new assistant, or leveling up an existing doctor or assistant.

Challenge stages

Image	Stage	Best Doctors	Overview
	Stage 12A	Dr. Koopa Troopa Dr. Wario	Within a 70 second time limit, players need to destroy all Brick Blocks. In this stage, Brick Blocks are found surrounding crates on the top half, the bottom-left quarter and bottom-right quarter. Separating them are fully-frozen viruses, with an empty mid-point. The top-left and top-right Brick Blocks contain shells. Completing this stage awards the player 500 coins.
	Stage 12B	Dr. Baby Peach Dr. Wario	Within a 60 second time limit, players need to destroy all barriers. In this stage, barriers are found in the leftmost columns and rightmost columns, along with the first, fourth and seventh rows. Viruses in groups of two rows by seven columns are found below each row of barriers. Completing this stage awards the player 500 coins.
	Stage 12C	Dr. Wario Dr. Larry	Within an 80 second time limit, players need to eliminate all viruses and destroy all colorful crates. In this stage, colorful crates have lines of viruses (horizontally and vertically) next to them. Colorful crates do not need a match of the same color to remove the ice, but still require a match of the same color to destroy. Additionally, a key is found in the middle column, which will be used to unlock a door between a row of fully-frozen green viruses. A row of fully-frozen colorful crates are above the aforementioned row, and additional colorful crates are found in two of the rows above it. This stage will scroll for one line each time enough objects are cleared, and will stop after 8 lines are introduced. Completing this stage awards the player 1000 coins and a Staff Ticket.

Special Stage

Image	Stage	Best Doctors	Overview
	Special Stage	Dr. Koopa Troopa Dr. Waluigi	The objective of this stage is to eliminate all viruses and collect all pink coins from Brick Blocks. In this stage, a lot of dust are found and contain viruses and crates, along with one shell, three Empty Blocks and five Brick Blocks each containing coins in the higher portion of the stage after it is scrolled up enough. A lock block is found initially and unlocks some crates and viruses. This stage will scroll for one line each time enough objects are cleared, and will stop after 8 lines are introduced. Completing this stage awards the player 1000 coins and Dr. Larry.

Profiles

• Dr. Mario World Twitter:
  • Red: "Looks like new stages will be added on Feb. 3, 2 AM PT. What, did you think I was going to say something like, 'I love sweets!'? Yeah, right. Don't mistake us for cavity-causers."
  • Yellow: "New stages were added! Valentine's Day may be over, but this candy world can still satisfy your sweet tooth. The reward for World 12 is Dr. Larry. The Special Stage is more spicy than sweet, though... Good luck."