World 15 (Dr. Mario World)

World 15
Game	Dr. Mario World
Level(s)	44
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World 15 is a sunset cloud world with floating platforms in Dr. Mario World, resembling Bouncy Cloud Boomerangs from New Super Mario Bros. U. The first area is available as of 2 AM PT on Apr. 26, 2020, while the second area, challenge stages and special stage are available as of 2 AM PT on May. 14, 2020.

When an area is cleared, Paratroopas, Parabombs, and Foos appear. The viruses featured in the regular stages are red, yellow and light-blue.

Area 1

Image	Stage	Best Doctors	Overview
	Stage 561	Dr. Roy Dr. Toad	Starting with 36 capsules, the objective of this stage is to eliminate all viruses (23) and collect all keys (8). In this stage, the crates form a diamond with Brick Blocks (all containing hidden viruses) and two bubbles containing doors, and on the outside are shells, keys and bubbles containing doors.
	Stage 562	Dr. Wendy Dr. Fire Rosalina	Starting with 30 capsules, the objective of this stage is to eliminate all viruses (40). In this stage, there are three columns of barriers in the middle with exploder in between, with groups of viruses mostly surrounded by Empty Blocks next to this group. The corners contain clouded viruses and Brick Blocks in the shape of a "+", where there is a hidden exploder in the middle of each group and hidden viruses in the others.
	Stage 563 (Hard)	Dr. Larry Dr. Toad	Starting with 38 capsules, the objective of this stage is to eliminate all viruses (12), collect all coins from Coin Blocks (24) and break all barriers (6). In this stage, the second, fourth and sixth rows each contain two floatie viruses, two barriers, a shell, two Brick Blocks each containing coins and two normal viruses. Between those rows are crates between two colorful crates. Between the five rows are rows that contain colorful crates and Brick Blocks each containing coins.
	Stage 564	Dr. Roy Dr. Wario	Starting with 36 capsules, the objective of this stage is to break all crates (39) and collect all keys (3). This stage is populated with crates, with dust between crates that cover doors in the second row and viruses in the others. The filled flasks in this stage will shoot out either exploders or dust viruses.
	Stage 565	Dr. Daisy Dr. Wario	Starting with 35 capsules, the objective of this stage is to collect all coins from Coin Blocks (18) and collect all keys (4). In this stage, there are four quadrants. In the top two quadrants, there are exploders, colorful crates, doors and caged viruses. In the bottom two quadrants, there are keys, exploders, colorful crates, lock blocks and caged colorful crates. In the column between the quadrants are Brick Blocks each containing coins, in the row between the quadrants are viruses and keys and in the middle is another lock block.
	Stage 566	Dr. Waluigi Dr. Roy	Starting with 34 capsules, the objective of this stage is to eliminate all viruses (26) and break all barriers (40). In this stage, groups of two dust viruses in a column are surrounded by crates and barriers. A shell is found among barriers in rows #3, #6 and #9.
	Stage 567 (Hard)	Dr. Kamek Dr. Toadette	Starting with 40 capsules, the objective of this stage is to eliminate all viruses (10) and collect all purple coins (12). In this stage, the purple coins are in the second, fifth and eighth rows, where the ones in the top and bottom rows are caged and are in between Empty Blocks and the ones in the middle row are between colorful crates. More colorful crates are located above the coins in the top row and the coins in the bottom row. Between the rows with coins are bubbles each containing floatie viruses that would land next to Brick Blocks at the beginning of the stage. Purple coins are unlocked in the following sequence: The 4 coins in row #5. The 8 coins in rows #2 and #8.
	Stage 568	Dr. Ludwig Dr. Yoshi	Starting with 37 capsules, the objective of this stage is to eliminate all viruses (24) and collect all coins from Coin Blocks (42). In this stage, there are barrels each containing exploders and half-frozen viruses. The Brick Blocks adjacent to the barrels as well as the first Brick Block in the second row and the last Brick Block in the eighth row contain coins.
	Stage 569	Dr. Ludwig Dr. Kamek	Starting with 42 capsules, the objective of this stage is to collect all virus coins (4). In this stage, each virus coin is covered by fully-frozen viruses, barrels containing purple coins, normal or half-frozen viruses, and barrels containing caged purple coins in the order starting from the center. The filled flasks in this stage will shoot out exploders. Purple coins are unlocked in the following sequence: The 20 coins found in the barrels next to fully-frozen viruses. The 4 coins each surrounded by three viruses, also in barrels.
	Stage 570	Dr. Yoshi Dr. Daisy	Starting with 32 capsules, the objective of this stage is to eliminate all viruses (32) and collect all keys (16). In this stage, there is a virus between every key and door, and the viruses are in groups of four in a row. Some of the viruses and the cages are caged. In the middle column are half-frozen flasks, lock blocks and a skill charger. The filled flasks in this stage will shoot out either barriers or exploders.
	Stage 571 (Hard)	Dr. Larry Dr. Yoshi	Starting with 42 capsules, the objective of this stage is to eliminate all viruses (15), collect all coins from Coin Blocks (30) and break all colorful crates (27). In this stage, Brick Blocks (all containing coins) are placed in a cascading fashion with colorful crates between them, and below the columns with Brick Blocks are floatie viruses. Next to the floatie viruses are colorful crates.
	Stage 572	Dr. Ludwig Dr. Goomba Tower	Starting with 34 capsules, the objective of this stage is to eliminate all viruses (34), break all Brick Blocks (17) and collect all keys (5). In this stage, there are two groups each forming a triangle. Within each group are Brick Blocks that surrounds a shell. The groups also have viruses (some half-frozen) and half-frozen lock blocks surrounding the Brick Blocks. The upper group also has keys and doors with a viruses in between each pair.
	Stage 573	Dr. Larry Dr. Toad	Starting with 36 capsules, the objective of this stage is to collect all virus coins (4). In this stage, there are colorful crates, clouded viruses, floatie viruses and purple coins (both caged and uncaged), where most of them cover the virus coins. Purple coins are unlocked in the following sequence: The five coins blocking the top-left virus coin and the five coins blocking the bottom-right virus coin, for a total of 10 coins. The 1 coin in the middle of the colorful crates in the middle. The remaining coins along rows #2 and #8 and columns #2 and #8, for a total of 14 coins. The coin in the top-right corner and the coin at the bottom-left, for a total of 2 coins.
	Stage 574	Dr. Kamek 8-Bit Dr. Mario	Starting with 35 capsules, the objective of this stage is to eliminate all viruses (15). In this stage, clouded barriers are found in the odd-numbered columns, and between them are half-frozen viruses. The filled flasks in this stage will shoot out either barriers or shells.
	Stage 575 (Hard)	Dr. Toad Dr. Larry	Starting with 35 capsules, the objective of this stage is to eliminate all viruses (26) and break all colorful crates (24). This stage is shaped like the number "555", with each digit formed by different colors of viruses, caged colourful crates and a lock block. Crates occupy the gaps in each "digit", except for the gaps in the middle.
	Stage 576 (Hard)	Dr. Wendy Dr. Goomba Tower	Starting with 40 capsules, the objective of this stage is to collect all coins from Coin Blocks (36) and collect all purple coins (18). In this stage, purple coins are found among Brick Blocks, with the ones in the second, middle and eighth columns being Coin Blocks while the rest contain hidden viruses. Additional crates are in the third and seventh columns. The filled flasks in this stage will shoot out exploders. Purple coins are unlocked in the following sequence: The four coins in the leftmost column and the four coins in the rightmost column, for a total of 8 coins. The 10 coins in the middle three columns.
	Stage 577	Dr. Luma Dr. Dolphin	Starting with 38 capsules, the objective of this stage is to eliminate all viruses (24) and break all barriers (19). In this stage, bubbles containing barriers are found within the leftmost, center and rightmost columns, and between the columns are viruses in groups of four in each column arranged in a cascade fashion. Each of the column's objects is above a bubble machine.
	Stage 578	Dr. Yoshi Dr. Kamek	Starting with 40 capsules, the objective of this stage is to collect all virus coins (30). In this stage, purple coins are in the middle, where they happen to cover four virus coins, and among the group are shells. Surrounding the purple coins are normal viruses at the top and bottom and floatie viruses at the sides, each covering a virus coin. Purple coins are unlocked in the following sequence: The middle five coins in the second, fourth, sixth and eighth rows, for a total of 20 coins. The rest of the coins in the even-numbered columns, for a total of 20 coins.
	Stage 579	Dr. Toad Dr. Larry	Starting with 42 capsules, the objective of this stage is to collect all virus coins (10). In this stage, four of the virus coins are covered by viruses (both normal and half-frozen) and caged colorful crates. The top and the sides have lock blocks surrounded by viruses and colorful crates. In the middle of the stage is an exploder, which is adjacent to fully-frozen ice fans and colorful crates.
	Stage 580	Dr. Bowser Jr. Dr. Daisy	The last stage of the first area and starting with 35 capsules, the objective of this stage is to eliminate all viruses (44) and collect all purple coins (20). In this stage, the leftmost and rightmost columns contain dust viruses, while the second leftmost and second rightmost columns contain Brick Blocks, Empty Blocks and shells. In the middle five columns, viruses are in every third row starting from the third row, while bubbles containing coins are in every third row starting from the second row. Purple coins are unlocked in the following sequence: The 5 coins inside bubbles starting from row #2. The 5 coins inside bubbles starting from the second-revealed row. The 5 coins inside bubbles starting from the fifth-revealed row. The 5 coins inside bubbles starting from the eighth-revealed row. This stage will scroll for one line each time enough objects are cleared or enough capsules are added to the stage and will stop after 10 lines are introduced. When cleared, the rest of the first area in the world map gets cleared of viruses. Players also obtain the Parabomb assistant upon completing this stage.

Area 2

Image	Stage	Best Doctors	Overview
	Stage 581	Dr. Boo Dr. Bowser	Starting with 32 capsules, the objective of this stage is to collect all virus coins (4). In this stage, the viruses are compartmentalized into two sections by bubble machines, each section having two virus coins. Some of the viruses and bubble machines are half-frozen. The filled flasks in this stage will shoot out exploders.
	Stage 582 (Hard)	Dr. Rosalina Dr. Mario	Starting with 45 capsules, the objective of this stage is to collect all keys (9). In this stage, the viruses are surrounded by barriers, with only the rightmost virus in the seventh row being open on the right. Brick Blocks are within the fifth row and the ninth row. The first eight keys start in the tenth row while the last key start in the fifth row and the first door is in the fifth row while the last eight doors are in the first row. The capsule amount is increased from 38 to 45 since June 2021. Besides that, this stage is otherwise the same.
	Stage 583	Dr. Donkey Kong Dr. Fire Peach	Starting with 40 capsules, the objective of this stage is to collect all purple coins (14). In this stage, there are six rows of barrels between a row of floatie viruses with a space in the middle and a row of crates. The barrels in the middle column and the eighth row contain purple coins (caged and uncaged), the barrels in the seventh row except the middle contain exploders, while the rest contain floatie viruses. Purple coins are unlocked in the following sequence: The 1 coin inside a barrel in the middle of the third row. The 1 coin inside a barrel in the middle of the fourth row. The 1 coin inside a barrel in the middle of the fifth row. The 1 coin inside a barrel in the middle of the sixth row. The 1 coin inside a barrel in the middle of the seventh row. The 9 coins inside barrels in the eighth row.
	Stage 584	Dr. Nabbit Dr. Luigi	Starting with 30 capsules, the objective of this stage is to eliminate all viruses (41) and break all barriers (8). In this stage, there are bubbles that contain viruses and colorful crates, with barriers in the even-numbered columns in the first and sixth rows. The first row also contain fully-frozen colorful crates in the odd-numbered columns.
	Stage 585	Dr. Fire Rosalina Dr. Fire Peach	Starting with 44 capsules, the objective of this stage is to eliminate all viruses (17), collect all purple coins (33) and collect all keys (7). In this stage, the purple coins are arranged in a checkered pattern, with partially-damaged barrels between them. A couple of barrels contain keys, some contain more purple coins and the others contain viruses.
	Stage 586	Dr. King Boo Dr. Wendy	Starting with 32 capsules, the objective of this stage is to eliminate all viruses (8) (including any that appear from flasks before this objective is met) and collect all coins from Coin Blocks (45). This stage is shaped like an "X", which is formed by exploders (a few are half-frozen) and barrels containing floatie viruses and Brick Blocks. All Brick Blocks except the ones in the second row and the sixth row contain coins. The filled flasks in this stage will shoot out either exploders or viruses.
	Stage 587 (Hard)	Dr. Fire Luigi Dr. Fire Mario	Starting with 35 capsules, the objective of this stage is to eliminate all viruses (17), collect all purple coins (19) and collect all keys (6). In this stage are purple coins (caged and uncaged) among viruses and Brick Blocks, crates and colorful crates. The middle column contains bubbles with viruses and shells. Most of the Brick Blocks contain hidden viruses, with the exception of the second row, which has hidden exploders in the second and third blocks (the others do not contain anything). Purple coins are unlocked in the following sequence: The first and last coins in row #3, for a total of 2 coins. The second and third coins in row #8, for a total of 2 coins. The coins in the rows #5, #7 and #8 along with the coins in the middle column, for a total of 13 coins. The 2 coins in row #4.
	Stage 588	Dr. Roy Dr. Wendy	Starting with 35 capsules, the objective of this stage is to collect all coins from Coin Blocks (30). In this stage, barrels containing Brick Blocks (all containing coins) are in the topmost row and the leftmost and rightmost columns. Bubble machines are also in the leftmost and rightmost columns. Besides them are half-frozen viruses, bubbles containing viruses, crates and colorful crates. The filled flask in this stage will shoot out bubbles containing viruses.
	Stage 589	Dr. Fire Rosalina Dr. Baby Mario	Starting with 35 capsules, the objective of this stage is to eliminate all viruses (23) and break all barriers (24). This stage is shaped like an hourglass, with the clouded and caged barriers and the clouded lock blocks forming the "sand" and the viruses and the flasks forming the "glass". A shell is located at the left of the fifth row. The filled flasks in this stage will shoot out either exploders or shells.
	Stage 590	Dr. Fire Mario Dr. Wendy	Starting with 10 capsules, the objective of this stage is to eliminate all viruses (24) and collect all coins from Coin Blocks (66). In this stage, there are fully-frozen colorful crates forming a heart with a space in the middle, while they are surrounded by Brick Blocks. At the bottom of the Brick Blocks are Capsule Plus and floatie viruses. The Brick Blocks that contain coins are at the sides, with the exception of the ones in the fourth row, the middle of the eighth row and the first, fourth, fifth, sixth and last blocks in the topmost row. A number of Brick Blocks contain hidden viruses. The Brick Blocks above and below the colorful crates contain hidden viruses, while the second and second-from-last Brick Blocks in the sixth and seventh rows contain hidden exploders.
	Stage 591	Dr. Waluigi Dr. Yoshi	Starting with 35 capsules, the objective of this stage is to eliminate all viruses (14) and collect all purple coins (20). In this stage, dust clouds occupy most of the stage, surrounding Empty Blocks and being surrounded by crates. Within the dust clouds are purple coins and viruses. Purple coins are unlocked in the following sequence: The two highest coins that are revealed and the four coins (covered in dust) surrounding the Empty Block in row #4, for a total of 6 coins. The 4 coins (covered in dust) surrounding the second Empty Block in row #4. The two lowest coins that are revealed and the four coins (covered in dust) surrounding the Empty Block in row #8, for a total of 6 coins. The 4 coins (covered in dust) surrounding the first Empty Block in row #6.
	Stage 592	Dr. Bowser Jr. Dr. Dry Bowser	Starting with 35 capsules, the objective of this stage is to collect all virus coins (8). In this stage, the bubbles are behind the virus coins, with some of them being risen toward Brick Blocks. All bubbles contain viruses. On the rightmost column are shells and a few viruses. The filled flasks in this stage will shoot out bubbles containing viruses.
	Stage 593	Dr. Wendy Dr. Fire Rosalina	Starting with 40 capsules, the objective of this stage is to eliminate all viruses (24), collect all coins from Coin Blocks (36) and break all barriers (28). In this stage, four groups of six viruses are surrounded by barriers with one side open, and Brick Blocks (all containing coins) in groups of three in a row or column are next to the barriers.
	Stage 594 (Hard)	Dr. Dry Bowser Dr. Ludwig	Starting with 38 capsules, the objective of this stage is to break all crates (15) and collect all virus coins (5). In this stage, all the crates and viruses are fully-frozen, with viruses found in the corners of the group and in the middle.
	Stage 595	Dr. Fire Rosalina Dr. Toad	Starting with 10 capsules, the objective of this stage is to break 20 Brick Blocks and collect all coins from Coin Blocks (42). In this stage, there are a lot of Brick Blocks with a couple of viruses and a Capsule Plus being revealed. In addition, there are four keys behind cages with doors directly above them. The lock blocks are found in the last Brick Block in the sixth row and the last Brick Block in the second row. The Brick Blocks that contain coins are the first two in both the fourth and eighth rows, third and fourth in both the third and seventh row, the fifth and sixth in both the second and sixth rows and the last one in both first and fifth rows. The Brick Blocks that contain Capsule Plus are found in the blocks two rows above and two rows below each of them.
	Stage 596	Dr. Peach Dr. Wario	Starting with 32 capsules, the objective of this stage is to eliminate all viruses (16) and collect all purple coins (32). In this stage, purple coins form two rings: the inner ring surrounds a lock block and the outer ring surrounds eight viruses and the inner ring. Caged viruses are found outside the outer ring. The coins in rows #2 and #8 and columns #2 and #8 are half-frozen, except for the ones in the middle column and row #5. Purple coins are unlocked in the following sequence: The second and fourth coins in both rows #4 and #6, for a total of 4 coins. The rest of the coins (4) surrounding the lock block. The rest of the coins (4) in row #5 and the middle column. The rest of the coins (20).
	Stage 597	Dr. Baby Peach Dr. Luigi	Starting with 36 capsules, the objective of this stage is to eliminate all viruses (35), collect all purple coins (31) and collect all keys (9). In this stage, the coins form a spiral pattern, with viruses occupying most of the spaces and a purple coin, a half-frozen key and a half-frozen door included within the gaps. Purple coins are unlocked in the following sequence: The coin in column #1, the third coin in row #6, plus the third and last three coins in row #8, for a total of 6 coins. The last 2 coins in row #7. The rest of the coins (22).
	Stage 598	Dr. Larry Dr. Daisy	Starting with 35 capsules, the objective of this stage is to eliminate all viruses (19) and collect all keys (10). In this stage, the viruses are all behind cages within the middle five columns, and the lock blocks are found in the middle column. Shells and exploders found in the leftmost columns and rightmost columns surrounded by colorful crates and crates. Two of the keys and doors are within partially-damaged barrels.
	Stage 599	Dr. Yoshi Dr. Kamek	Starting with 30 capsules, the objective of this stage is to eliminate all viruses (20). In this stage, two groups of six viruses are found in the middle three columns, one side partially surrounded by frozen ice fans and another surrounded by fully-frozen bubble machines and Brick Blocks. The leftmost and rightmost columns contain Capsule Plus while the columns beside them contain floatie viruses. The second and third Brick Blocks in the third row contain hidden floatie viruses.
	Stage 600 (Hard)	Dr. Baby Mario Dr. Daisy	In the final stage of this world and starting with 20 capsules, the objective is to break all colorful crates (14) and collect all purple coins (15). In this stage, the Brick Blocks are in the shape of a castle, where a few colorful crates are found below. Many of the Brick Blocks contain hidden objects, which include viruses, exploders, shells, purple coins and Capsule Plus. Higher up the stage are viruses in the formation of a "V" below colorful crates, which are all below purple coins. Empty Blocks are located between the purple coins in the four topmost rows. The filled flasks in this stage will shoot out either exploders or Brick Blocks. Purple coins are unlocked in the following sequence: The 1 coin in row #2 (before the stage scrolls). The 5 coins hidden in the Brick Blocks between the flasks in row #3 (before the stage scrolls). The 9 coins beside and above the Empty Blocks in the last four revealed rows. This stage will scroll for one line each time enough objects are cleared or enough capsules are added to the stage 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 16. Upon completion, players earn a free Staff Ticket. Note: This stage is incorrectly assigned to World 16 on the game's official website.

Challenge stages

Image	Stage	Best Doctors	Overview
	Stage 15A	Dr. Dry Bowser Dr. Wario	Within a 50 second time limit, the objective of this stage is to collect all keys (6). The colors available in this stage are blue, green, and pink. In this stage, each of the column with keys and doors have seven viruses between them. the two leftmost columns contain half-frozen viruses in rows of two like-colored ones, while the two rightmost columns contain normal viruses in rows of two like-colored ones. The fourth and sixth columns contain like-colored viruses in a row with a column in the middle that has an exploder and barrels containing exploders, whose colors are the same as the viruses diagonally beneath them. The third column contains crates while the seventh column contains barriers. Completing this stage awards the player 500 coins.
	Stage 15B	Dr. Fire Rosalina Dr. Baby Peach	Within a 66 second time limit, the objective of this stage is eliminate all viruses (26) and break 68 Brick Blocks. The colors available in this stage are blue, green, and pink. In this stage are a lot of Brick Blocks, where the odd-numbered rows have gaps between them. Floatie viruses are within the gaps in the seventh row before the stage scrolls. Additional viruses are hidden in the Brick Blocks in the second, fourth and sixth rows, along with the rows that are revealed after the stage scrolls up twice and four times. A row of exploders is revealed after the stage scrolls up five times. This stage will scroll for one line each time enough objects are cleared or enough capsules are added to the stage and will stop after 6 lines are introduced. Completing this stage awards the player 500 coins.
	Stage 15C	Dr. Dry Bowser Dr. Dolphin	Within a 60 second time limit, the objective of this stage is to eliminate all viruses (12) and collect all purple coins (39). The colors available in this stage are blue, green, and pink. In this stage, shells are found in the leftmost and rightmost columns, with four of them being frozen and one of them inside a bubble. Bubble machines are covered in clouds, which can be used to cause the four highest shells to float to the row with unlocked coins. The two topmost rows contain barrels containing viruses, and below the gaps are exploders inside bubbles. Purple coins are unlocked in the following sequence: The 8 coins in the ninth row from left to right, one coin at a time. The 6 coins in the eighth row from right to left, one coin at a time. The 6 coins in the seventh row from left to right, one coin at a time. The 6 coins in the sixth row from right to left, one coin at a time. The 6 coins in the fifth row from left to right, one coin at a time. The 7 coins in the third row from right to left, one coin at a time for the first three coins but all four coins simultaneously for the rest. Completing this stage awards the player 1000 coins and a Staff Ticket.

Special Stage

Image	Stage	Best Doctors	Overview
	Special Stage	Dr. Fire Peach Dr. Wendy	Starting with 37 capsules, the objective of this stage is to collect all coins from Coin Blocks (15), collect all purple coins (21) and collect all keys (8). In this stage, the purple coins are placed in a checkered pattern in the second to seventh columns and third to ninth rows. In the tenth row are caged keys and two flasks. The rightmost column contain bubbles containing viruses and a lock block. The third to seventh Brick Blocks in the eighth row contain coins. The filled flasks in this stage will shoot out either exploders or shells. Purple coins are unlocked in the following sequence: The 4 coins in the column #2. The 3 coins in the column #3. The 4 coins in the column #4. The 3 coins in the column #5. The 4 coins in the column #6. The 3 coins in the column #7. Completing this stage awards the player 1000 coins and Dr. Lakitu.

Stage layouts for scrolling stages

• 

  Stage 580 (all 10 lines)

• 

  Stage 600 (first 8 of 9 lines)

• 

  Stage 600 (the rest of the 9 lines after the first 8)

• 

  Stage 15B (all 6 lines)

Profiles

• Dr. Mario World Twitter:
  • Yellow: "Looks like new stages will be added at Apr. 26, 11 PM PT. Woah, I can see clouds below!"
  • Red: "Woo-hoo! New stages were added. The special stage reward for World 15 is Dr. Lakitu. That makes sense 'cause there are so many clouds."