World 9 (Dr. Mario World)

World 9 is a jungle-themed world in Dr. Mario World. The first area is available as of 3 AM PT on Oct. 31, 2019, while the second area, challenge stages and special stage are available as of 2 AM PT on Nov. 21, 2019.

When the areas are cleared, Goombrats, Scuttlebugs and Wigglers appear. The viruses featured in the regular stages are red, yellow and blue, while in the challenge stages, the featured viruses are green, light-blue and pink.

Area 1

Image	Stage	Best Doctors	Overview
	Stage 321	Dr. Yoshi Dr. Rosalina	This stage introduces flasks, which shoots out random objects at empty spaces if a capsule landed without making a match. The random objects vary by stage, so in this stage for example, the random objects could be viruses or exploders. Moreover, larger flasks shoot out more objects compared to the smaller flasks. Each empty flask will fully fill after 5 capsule landings. The objective of this stage is to eliminate all viruses, including any that appear from flasks.
	Stage 322	Dr. Koopa Troopa Dr. Rosalina	The objective of this stage is to find all coins from Coin Blocks. The necessary coins are found in one Brick Block on each row of Brick Blocks or crates. Other Brick Blocks contain hidden viruses. Frozen flasks will not fill up until it is cleared of ice. Filled flasks in this stage will shoot out either viruses or shells. The capsule amount is increased from 26 to 30 since version 2.0.0. Besides that, this stage is otherwise the same.
	Stage 323	Dr. Peach Dr. Rosalina	The objective of this stage is to eliminate all viruses, including any that appear from flasks. The stage's Brick Blocks and Empty Blocks are arranged like a staircase. Certain Brick Blocks have hidden viruses. Filled flasks in this stage will shoot out either viruses, exploders or Brick Blocks.
	Stage 324	Dr. Baby Daisy Dr. Baby Peach	The objective of this stage is to eliminate all viruses and collect all purple coins. Cages are also featured in this stage, in which the red lock blocks unlocks the middle ring of cages, the yellow lock block unlocks the outer ring of cages and the blue lock block unlocks the inner ring of cages. Two exploders appear in the middle ring. Purple coins are unlocked in the following sequence: The coins initially locked behind red cages. The coins initially locked behind blue cages. The coins initially locked behind yellow cages. The capsule amount is increased from 36 to 40 since version 2.0.0. Besides that, this stage is otherwise the same.
	Stage 325	Dr. Kamek Dr. Wendy	The objective of this stage is to eliminate all viruses, including any that appear from flasks. This stage is shaped like the head of a virus. All existing viruses are hidden viruses. Filled flasks in this stage will shoot out either bubble viruses or exploders. The capsule amount is increased from 32 to 35 since version 2.0.0. Besides that, this stage is otherwise the same.
	Stage 326	Dr. Koopa Troopa Dr. Baby Mario	The objective of this stage is to eliminate all viruses and collect all the purple coins. In this stage, there is a square of Brick Blocks and nine shells. Clearing the shells will reveal that the Brick Blocks hide Caged Coins surrounding hidden viruses. The Brick Blocks in the top two rows contain either viruses or purple coins (either caged or uncaged). Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is reduced from 38 to 34. Two additional shells are added to the first two rows in the rightmost columns. Additionally, the shells come in three colors.
	Stage 327	Dr. Kamek Dr. Luma	The objective of this stage is to collect all the virus coins. The virus coins are found under the eight viruses between the two rows of fans, along with the viruses in the second and fourth rows. The filled flask in this stage will shoot out either viruses or shells.
	Stage 328	Dr. Larry Dr. Fire Rosalina	The objective of this stage is to eliminate all viruses and Brick Blocks. All the viruses are initially covered in bubbles. The red lock block in this stage unlocks the cages covering colorful crates.
	Stage 329	Dr. Rosalina Dr. Wendy	The objective of this stage is to collect all coins from Coin Blocks. This stage is shaped like an angled tilde symbol, with viruses crossing under it. The only Brick Blocks that do not contain coins are the ones found in the bottom-right, the bottom-middle and the top-right. Filled flasks in this stage will shoot out either viruses or exploders. The capsule amount is increased from 35 to 39 since version 2.0.0. Besides that, this stage is otherwise the same.
	Stage 330	Dr. Baby Luigi Dr. Wendy	The objective of this stage is to eliminate all viruses, including any that appear from flasks. This stage is shaped like an empty heart, with Brick Blocks forming the outside of a heart. Most of the initial viruses are hidden in Brick Blocks, and a few colorful crates are found in this stage. Flasks exist in this stage, but will only be revealed after one line is revealed. Filled flasks in this stage will shoot out either viruses, exploders or Brick Blocks. This stage will scroll for one line each time enough objects are cleared, and will stop after 2 lines are introduced.
	Stage 331	Dr. Dolphin Dr. Bowser Jr.	The objective of this stage is to collect all keys. In this stage, five keys, five doors and bubble viruses are found in the bottom right-angle triangle formation, while regular viruses along with two keys and two doors are found in the top right-angle triangle formation. Each key is blocked by one virus or bubble virus. Crates that each require four hits are also found in the middle of each triangle formation. The capsule amount is increased from 40 to 43 since version 2.0.0. Besides that, this stage is otherwise the same.
	Stage 332	Dr. Daisy Dr. Rosalina	The objective of this stage is to collect all coins from Coin Blocks and collect all purple coins. In this stage, groups of viruses each forming a plus symbol are found in all four corners, with three of them surrounding flasks and one of the surrounding a lock block. All purple coins are found behind cages locked by lock blocks. Filled flasks in this stage will shoot out either viruses, exploders or Brick Blocks. Purple coins are unlocked in the following sequence: The coins initially locked behind red cages. The coins initially locked behind yellow cages. The coins initially locked behind blue cages. The capsule amount is increased from 30 to 33 since version 2.0.0. Besides that, this stage is otherwise the same.
	Stage 333	Dr. Wendy Dr. Ludwig	The objective of this stage is to collect all keys. This stage contains fully-frozen Brick Blocks except for one that is half-frozen, along with a few dust viruses and half-frozen viruses in the columns without Brick Blocks. The filled flask in this stage will shoot out shells.
	Stage 334	Dr. Koopa Troopa Dr. Bowser Jr.	The objective of this stage is to collect all coins from Coin Blocks. This stage contains multiple Capsule Plus in bubbles, along with fully-frozen flasks. The Brick Blocks in the middle column are all Coin Blocks. Filled flasks in this stage will shoot out viruses. Prior to version 2.0.0, the stage layout was different. The following changes were made: The flasks are changed from half-frozen to fully-frozen. Crates in the fourth and the sixth columns have reduced durability.
	Stage 335	Dr. Fire Peach Dr. Peach	The objective of this stage is to eliminate all viruses. This stage is shaped like an arrow pointing downwards. In this stage, there are columns of cages, while the lock blocks are covered in bubbles. Clouds conceal viruses, while floatie viruses inside bubbles are found after the stage scrolls. This stage will scroll for one line each time enough objects are cleared, and will stop after 7 lines are introduced. Prior to version 1.2.0, light-blue viruses appear in this stage instead of blue viruses, despite the fact that the icon shows blue viruses even before the update. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is reduced from 49 to 39. This stage is extended from scrolling 5 lines to 7 lines, and the entire stage is shifted one row above. A row of Empty Blocks is added to the topmost row. In the beginning, the viruses in the third, fourth, sixth and seventh columns are no longer shrouded in clouds. In the beginning, extra viruses shrouded in clouds are added in the third row on the leftmost and rightmost columns. The floatie viruses inside bubbles found in the middle three columns are changed to regular viruses (still inside bubbles). An additional virus in bubble is added after the stage scrolls up twice. The viruses in the topmost row at third and seventh columns after the stage scrolls up thrice are changed to floatie viruses.
	Stage 336	Dr. Koopa Troopa Dr. Rosalina	The objective of this stage is to collect all the virus coins. Four of them are blocked by purple coins, while two of them are blocked by Brick Blocks. The filled flask in this stage will shoot out either viruses or exploders. Purple coins are unlocked in the following sequence: The coins that start from the first row of the sixth column, to the third row of the fourth column, to the seventh row of the fifth column, to the fourth row of the rightmost column, and to the second row fo the seventh column. The rest of the coins that are caged. The capsule amount is increased from 30 to 33 since version 2.0.0. Besides that, this stage is otherwise the same.
	Stage 337	Dr. Koopa Troopa Dr. Rosalina	The objective of this stage is to collect all keys and eliminate all viruses, including any that appear from flasks. Colorful crates are found in three rows, along with four floatie viruses below the top and bottom of those rows. Prior to version 2.0.0, the stage layout was different. The following changes were made: The flasks are replaced by viruses. Filled flasks would have shoot out either viruses, shells, Brick Blocks or exploders. The leftmost and rightmost columns in the ninth row are changed from Brick Blocks to viruses. The colorful crates in the eighth row are replaced by Brick Blocks, with the middle key above it shifted to that row. The door in the middle column is shifted two rows below, and a virus took its original place. Brick Blocks are added next to that virus. The viruses in the fifth row and the middle virus in the seventh row are changed from floatie viruses.
	Stage 338	Dr. Wendy Dr. Larry	The objective of this stage is to eliminate all viruses, Brick Blocks and crates. This stage is shaped like a square with chipped off corners, with a outer layer of exploders covered by dust save for one not covered in dust, followed by a layer of crates with Brick Blocks in the corners, and on the inside are Brick Blocks alongside Ice Fans and an exploder. Four of the Brick Blocks contain Ice Fans, while the rest of them contain hidden viruses.
	Stage 339	Dr. Larry Dr. Luigi	The objective of this stage is to eliminate all viruses, collect all coins from Coin Blocks and collect all keys. In this stage, colorful crates are in the way between the keys and doors, and are shaped like two triangles, with the left formed by red colorful crates and the right formed by blue colorful crates. Between the groups of colorful crates are shells. At the bottom are viruses and Brick Blocks containing coins. The capsule amount is increased from 40 to 46 since version 2.0.0. Besides that, this stage is otherwise the same.
	Stage 340	Dr. Baby Daisy Dr. Daisy	The last stage of the first area, the objective of this stage is to eliminate all viruses, collect all purple coins in the stage and pink coins in Brick Blocks. In this stage, purple coins are surrounded by crates and colorful crates. The four Brick Blocks at the beginning of the stage are Coin Blocks. At the top-most portion of the stage visible only after the stage scrolls far enough, red viruses locked behind red cages in the shape of a "P" appear, with the lock block being located at the top-left corner. Brick Blocks cover most of the space except for the bottom row in that formation. Purple coins are unlocked in the following sequence: The half-frozen coins above the red colorful crates. The fully-frozen coins below the yellow colorful crates. This stage will scroll for one line each time enough objects are cleared, and will stop after 8 lines are introduced. When cleared, the rest of the first area in the world map gets cleared of viruses. Players also obtain the Goombrat assistant upon completing this stage. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is increased from 40 to 45. This stage is shifted up by two rows, and as a result, the scrolling will stop at 8 lines instead of 6 lines. Four of the colorful crates surrounding the half-frozen coins have reduced durability.

Area 2

Image	Stage	Best Doctors	Overview
	Stage 341	Dr. Waluigi Dr. Peach	The objective of this stage is to eliminate all viruses. In this stage, viruses are arranged in five separate columns with Empty Blocks in between, and each column contains one dust virus each. Two columns of six Brick Blocks are located in the second and eighth columns. Flasks of different capacity are found, meaning from the beginning of the stage, it will take less unmatched capsules to fill any that started with more capacity. Filled flasks in this stage will shoot out Brick Blocks. Prior to version 2.0.0, the stage layout was different. The following changes were made: Six Brick Blocks are added in the second and eighth columns each, from the third row to the eighth row.
	Stage 342	Dr. Luma Dr. Donkey Kong	The objective of this stage is to eliminate all viruses and collect all keys. In this stage, colorful crates, red viruses and a couple of Brick Blocks are in the way of the keys, and above the doors, viruses and colorful crates are positioned in a checkered pattern.
	Stage 343	Dr. Rosalina Dr. Bowser	The objective of this stage is to collect all purple coins in the stage and pink coins in Brick Blocks. In this stage, Brick Blocks are shaped in staircase patterns, with viruses between the top and the center patterns, and dust viruses between the center and the bottom patterns. The top two staircase patterns of Brick Blocks contain purple coins (either caged or uncaged) and pink coins: the purple coins are above the pink coins.
	Stage 344	Dr. Toadette Dr. Roy	The objective of this stage is to eliminate all viruses. In this stage, viruses hidden in clouds are found, and a floatie virus is found in the middle of crates. The filled flask in this stage will shoot out Brick Blocks. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is increased from 35 to 37. On the fourth and fifth rows, third and seventh columns, the Empty Blocks and viruses respectively are changed to crates with maximum durability.
	Stage 345	Dr. Ludwig Dr. Fire Mario	The objective of this stage is to collect all keys and collect all coins. This stage is shaped like a cross, with the keys at the bottom and the doors on top, and coins occupying the other sides of the formation. Within the boundaries of this formation are half-frozen and fully-frozen viruses.
	Stage 346	Dr. Larry Dr. Ludwig	The objective of this stage is to eliminate all viruses. In this stage, colorful crates in the shape of a pendant are found among viruses. Filled flasks in this stage will shoot out exploders.
	Stage 347	Dr. Toadette Dr. Donkey Kong	The objective of this stage is to collect all pink coins in Brick Blocks and virus coins. In this stage, the viruses and Brick Blocks are shaped like a round mirror with a stand. The visible viruses have virus coins behind them, while pink coins are found in Brick Blocks being hugged by the viruses in the circle. Hidden viruses are found in the leftmost and rightmost columns of Brick Blocks.
	Stage 348	Dr. Bowser Dr. Larry	The objective of this stage is to eliminate all viruses and collect all purple coins. This stage is shaped like an hourglass formed by viruses and colorful crates. Purple coins are unlocked in the following sequence: The coins in the first, second, sixth, seventh and eighth rows, except for the middle coin in the seventh row. The coins in the middle column. The coins in the fifth row.
	Stage 349	Dr. Daisy Dr. Fire Peach	The objective of this stage is to eliminate all viruses. In this stage, there are cages and three Capsule Plus (two of them in bubbles). The middle column contains multiple Capsule Plus and is blocked off by Empty Blocks and crates, except for in the middle row which is crossed over by a row of red viruses. The capsule amount is increased from 15 to 18 since version 2.0.0. Besides that, this stage is otherwise the same.
	Stage 350	Dr. Toadette Dr. Kamek	The objective of this stage is to eliminate all viruses. In this stage, there are three groups of viruses in the shape of crosses, along with a group of viruses in the seventh to tenth rows. Filled flasks in this stage will shoot out crates that require between one and four hits to destroy. Prior to version 1.2.0, a bug exists where the flasks will fill even when covered in dust. Prior to version 2.0.0, the stage layout was different. The following changes were made: The flasks are no longer covered in dust. Flasks covered in dust cannot fill until the dust is cleared. The first and last viruses in the first row are changed to dust viruses.
	Stage 351	Dr. Baby Daisy Dr. Larry	The objective of this stage is to eliminate all viruses and collect all purple coins. In this stage, colorful crates are found in the middle, while purple coins (both caged and uncaged) are found on the two leftmost and two rightmost columns. A key and door are found in the middle column, with the door blocking the way to a caged purple coin. Purple coins are unlocked in the following sequence: The coins in the sixth row on the left side and the coins in the eighth row on the right side. The coins in the third row on the left side and the coins in the sixth row on the right side. The coins in the eighth row on the left side and the coins in the third row on the right side. The coin located above the door.
	Stage 352	Dr. Daisy Dr. Roy	The objective of this stage is to eliminate all viruses. In this stage, there are four layers: the outermost layer is locked by blue cages with its corresponding lock block there, the next layer containing crates and an exploder, following that are yellow cages with red and yellow lock blocks, and on the inside are red cages. Additional exploders are found in one yellow and one red cages.
	Stage 353	Dr. Donkey Kong Dr. Wendy	The objective of this stage is to collect all coins from Coin Blocks and collect all virus coins. This stage contains a few half-frozen viruses among viruses and Brick Blocks, and an Ice Fan in the middle of the stage. virus coins are found in the four corners of this level, as well as under two groups of 2x2 viruses next to the Ice Fan. Coins are found in the fourth row and the sixth row of Brick Blocks.
	Stage 354	Dr. Koopa Troopa Dr. Roy	The objective of this stage is to eliminiate all viruses. In this stage, bubble viruses and fully-frozen viruses are found among Brick Blocks, and columns of viruses are locked behind cages. The lock blocks are found in the middle column and the top-left and top-right corners. Flasks that are locked by cages will not fill until they are unlocked. Filled flasks in this stage will shoot out viruses.
	Stage 355	Dr. Fire Mario Dr. Toad	The objective of this stage is to eliminate all viruses and collect all purple coins. In this stage, there are four Capsule Plus (two in bubbles), six floatie viruses at the bottom row and a few crates and colorful crates. Purple coins are unlocked in the following sequence: The coins in the second and fourth rows. The coins in the third row. The rest of the coins found in the middle three columns.
	Stage 356	Dr. Fire Rosalina Dr. Fire Peach	The objective of this stage is to eliminate all viruses. In this stage, the middle contains a flask surrounded by colorful crates. Next to the colorful crates and flask, half-frozen crates can be found surrounded by both half-frozen and normal viruses. Like-colored viruses arranged in 3x3 squares (middle ones being fully-frozen) are found in the top three rows, with the non-center red and yellow ones being half-frozen. The filled flask in this stage will shoot out viruses.
	Stage 357	Dr. Kamek Dr. Wendy	The objective of this stage is to eliminate only the yellow viruses (red and blue are not required to be eliminated) and collect all coins from Coin Blocks. This stage is shaped like an upside-down christmas tree. Coins are found in the second row of Brick Blocks, along with Brick Blocks forming a "V" each in the fourth to six rows and the seventh to ninth rows. Hidden viruses are found in the Brick Blocks without coins. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is reduced from 40 to 37. The Coin Block in the sixth row is removed. The Brick Blocks that contain hidden viruses from the fourth row to the eighth row are no longer there, resulting in regular viruses.
	Stage 358	Dr. Donkey Kong Dr. Larry	The objective of this stage is to eliminate all viruses. In this stage, viruses are found in all four corners of the square and surrounded by colorful crates, with hidden viruses in Brick Blocks. In addition, two exploders can also be found in Brick Blocks. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is reduced from 38 to 34. The Brick Blocks surrounded by viruses are changed from hidden viruses to hidden exploders. The hidden exploder in the second row, third column is changed to a hidden virus.
	Stage 359	Dr. Donkey Kong Dr. Fire Rosalina	The objective of this stage is to eliminate all viruses. In this stage, fully-frozen Ice Fans are found on the outside of the structure containing Brick Blocks, viruses and bubble viruses. A shell can be found in this stage. The higher row of Brick Blocks contain Ice Fans on the left and hidden viruses on the right, while the bottom row of Brick Blocks do not contain anything. The capsule amount is increased from 40 to 44 since version 2.0.0. Besides that, this stage is otherwise the same.
	Stage 360	Dr. Roy Dr. Fire Rosalina	The final stage is a scrolling stage that requires all viruses to be eliminated and all doors to be unlocked. It starts out with two separate rows of Brick Blocks containing keys either directly above a door or one virus between the key and door. After the two sets of keys and doors, there are two keys with doors directly above them in Brick Blocks. Above the row where the final doors are located are flasks. The rest of the stage contain hidden viruses in Brick Blocks, Dust Viruses and viruses found in plain sight, alongside crates. Filled flasks in this stage will shoot out Brick Blocks. This stage will scroll for one line each time enough objects are cleared, and will stop after 9 lines are introduced. Once it is cleared, the remaining area of the stage map gets cleared of viruses, and players can access World 10. Upon completion, players earn a free Staff Ticket. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is reduced from 50 to 39. The stage is shifted up by two rows, and as a result, the scrolling will stop at 11 lines instead of 9 lines. (More changes possibly exist)

Challenge stages

Image	Stage	Best Doctors	Overview
	Stage 9A	Dr. Baby Peach Dr. Wario	Within a 60 second time limit, players need to eliminate all viruses and collect all purple coins. In this stage, Caged Coins require the row of coins above them to be collected before they are unlocked. To aid in the collecting of coins, shells are lined up with coins to more easily collect them. Starting from version 1.2.0, completing this stage awards the player 500 coins.
	Stage 9B	Dr. Wario Dr. Bowser	Within a 75 second time limit, players need to eliminate all viruses. There are six floatie viruses surrounded by Brick Blocks, in which three are encased in a layer of ice while the others aren't. At the topmost portion of this stage, viruses shrouded by Clouds are present. This stage will scroll for one line each time enough objects are cleared, and will stop after 7 lines are introduced. Starting from version 1.2.0, completing this stage awards the player 500 coins.
	Stage 9C	Dr. Wendy Dr. Wario	Within a 75 second time limit, players need to eliminate all viruses and collect all pink coins in Brick Blocks. The Brick Blocks that contain coins are surrounded by Crates that each require 2 hits to be destroyed, while hidden viruses are found in the other Brick Blocks except for the fifth row. Completing this stage awards the player 1000 coins and a Staff Ticket (3 Hearts prior to version 1.2.0).

Special Stage

Image	Stage	Best Doctors	Overview
	Special Stage	Dr. Koopa Troopa Dr. Wario	The objective of this stage is to collect all coins from Coin Blocks. In this stage, viruses are scattered among Brick Blocks that contain coins, and more flasks are hidden until the stage has scrolled enough for them to be revealed. Filled flasks in this stage will shoot out either viruses, exploders or Brick Blocks. This stage will scroll for one line each time enough objects are cleared, and will stop after 6 lines are introduced. Completing this stage awards the player 1000 coins, and as of version 1.2.0, Dr. Diddy Kong is also awarded.

Stage layouts in previous versions

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  Stage 335 prior to version 1.2.0. Notice that there is a mismatch of viruses between the stage and the icon: the stage has light-blue viruses while the icon shows a blue virus.

Profiles

• Dr. Mario World Twitter:
  • Red: "I hear that new stages are gonna be added at 3 AM on Oct. 31 PT. Woah, just look at that jungle! A humid climate, huh? Probably not the best place for me..."
  • Yellow: "Apparently new stages will be added to #DrMarioWorld at 2 AM on Nov. 21 PT. I like the way the sunlight filters through the trees!"doctors!"