World 8 (Dr. Mario World)

World 8
Game	Dr. Mario World
Level(s)	44
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World 8 is a cosmic-themed world in Dr. Mario World. It is inspired by Super Mario Galaxy and Super Mario Galaxy 2, featuring elements from these games such as the Comet Observatory and planets from the Good Egg, Yoshi Star and Spin-Dig Galaxies. The first area is available as of 1 AM PT on Oct. 4, while the second area, challenge stages and special stage are available as of 5 PM PT on Oct. 17.

When the areas are cleared, Lumas of different colors appear, including yellow, blue, green, and red, along with Toads in astronaut suits, Star Bunnies and Octoombas. The viruses featured in the regular stages are red, green and light-blue.

Area 1

Image	Stage	Best Doctors	Overview
	Stage 281	Dr. Peach Dr. Koopa Troopa	Starting with 35 capsules, the objective of this stage is to eliminate all viruses (26) and collect all keys (3). The only colors available in this stage are red and green. This stage introduces keys, which float to the top of the stage until it collides with an object, and will not disappear until it comes into contact with a door. Hidden viruses are found in the third and fourth rows of Brick Blocks. Prior to March 18, 2021, the stage layout was different. The following changes were made: The objective of this stage is changed to require eliminating all viruses in addition to collecting all keys. The available colors are changed to red and green only.
	Stage 282	Dr. Baby Daisy Dr. Roy	Starting with 23 capsules, the objective of this stage is to collect all keys (10). In this stage, there are keys and doors in the leftmost, rightmost, fourth and sixth columns. On the leftmost and rightmost columns, each pair of key and door have two viruses in between while crates are placed below doors with its keys stacked in the middle columns. Five exploders are each in the second and eighth columns. Prior to version 2.0.0, the stage layout was different. Previously, this stage contains two groups of viruses that are surrounded by crates of maximum durability at the bottom and sides, with two keys outside of it. The capsule amount is increased from 20 to 23 since version 2.1.0. Besides that, this stage is otherwise the same.
	Stage 283	Dr. Luma Dr. Roy	Starting with 32 capsules, the objective of this stage is to eliminate all viruses (14) and collect all keys (3). This stage features cages that require clearing lock blocks to unlock and floatie viruses that obstruct the path between the keys and the doors on the sides, while crates obstruct the path between the middle key and door. Shells and pop cannons are available to help clear the path. Prior to version 1.3.5, the stage layout was different. The following changes were made: Capsule amount is increased from 41 to 45. Exploders are added directly above the keys, replacing crates. The virus in the top-left is changed to a floatie virus while the virus directly below it, originally a floatie virus, is changed to a regular virus. Two additional viruses are added directly above the bottom-most row of boxes. The bottom-most row of crates now require two hits to be broken instead of three. Prior to March 18, 2021, the stage layout was different. The following changes were made: Capsule amount is reduced from 45 to 32. The contents of the first and last cages in both rows #2 and #9 are changed to pop cannons (from crates and exploders respectively). The contents of the cages in row #8 and the middle one in row #2 are changed from crates to a key and a door respectively. All normal viruses are changed to floatie viruses.
	Stage 284 (Hard)	Dr. Baby Peach Dr. Diddy Kong	Starting with 23 capsules, the objective of this stage is to eliminate all viruses (16) and collect all purple coins (24). In this stage, viruses are shaped in a hash symbol (#) with Brick Blocks occupying the middle and the sides. Purple coins (caged and uncaged) are placed beside, above and below the outside Brick Blocks. Purple coins are unlocked in the following sequence: The 12 coins in columns #3, #5 and #7. The 12 coins in rows #4, #6 and #8.
	Stage 285	Dr. Baby Daisy Dr. Wendy	Starting with 39 capsules, the objective of this stage is to eliminate all viruses (28) and collect all coins from Coin Blocks (30). This stage contains viruses above and below Empty Blocks on the top part of the stage, in addition to shells and exploders. Viruses in the shape of a "U" are on the bottom-left part of the stage, and on the bottom-right are Brick Blocks, with the middle hiding hidden viruses and the outer layer shaped like a "U" containing coins.
	Stage 286	Dr. Mario Dr. Baby Luigi	Starting with 25 capsules, the objective of this stage is to eliminate all viruses (27). This stage introduces colorful crates, which in terms of capsule matches, can only be broken if a like-colored match is made adjacent to them.
	Stage 287	Dr. Fire Rosalina Dr. Fire Peach	Starting with 42 capsules, the objective of this stage is to eliminate all viruses (19). This stage features floatie viruses surrounded by colorful crates, with a number of viruses surrounding the light-blue colorful crates. The capsule amount is increased from 39 to 42 since version 1.3.5. Besides that, this stage is otherwise the same.
	Stage 288	Dr. Diddy Kong Dr. Baby Luigi	Starting with 38 capsules, the objective of this stage is to eliminate all viruses (18). This stage features lock blocks and floatie viruses situated between rows of cages. Pop cannons are located in the same columns as the floatie viruses and lock blocks. The cages contain colorful crates. Prior to March 18, 2021, the stage layout was different. The following changes were made: Pop cannons are added to the bottom of the last objects in columns #2, #5 and #8.
	Stage 289	Dr. Fire Mario Dr. Roy	Starting with 40 capsules, the objective of this stage is to eliminate all viruses (48) and collect all keys (7). This stage featues half-frozen viruses forming a square, along with crates, keys and locks forming a diamond with viruses inside the formation. Prior to version 1.3.5, the stage layout was different. The following changes were made: Capsule amount is increased from 39 to 43. A number of crates changed from requiring three hits to two hits. Three hidden viruses are 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 43 to 35. The crates in the third and fourth row have reduced durability from 3 hits to 2 hits and the crate in the eighth row has reduced durability from 2 hits to 1 hit. The inside of the diamond of crates contain viruses instead of four Brick Blocks. The capsule amount is increased from 35 to 40 since version 2.1.0. Besides that, this stage is otherwise the same.
	Stage 290	Dr. Wendy Dr. Baby Peach	Starting with 39 capsules, the objective of this stage is to eliminate all viruses (12) and collect all purple coins (30). The only colors available in this stage are red and green. In this stage, there is a border of green cages containing caged coins, with purple coins inside and Brick Blocks and a lock block on the outside. Floatie viruses exist inside and outside the border. Purple coins are unlocked in the following sequence: The 2 coins within the boundary of green cages. The 22 coins locked behind green cages, which require the lock block to be cleared first. The coins hidden in Brick Blocks: two on the leftmost column, two on the rightmost column and two on the top row, for a total of 6 coins. Prior to March 18, 2021, the stage layout was different. The following changes were made: The available colors are changed to red and green only. All viruses are changed to floatie viruses. Four floatie viruses are added next to the two purple coins in the middle.
	Stage 291 (Hard)	Dr. Yoshi Dr. Fire Rosalina	Starting with 36 capsules, the objective of this stage is to eliminate all viruses (39) and break all crates (12). There are light-blue cages, with the corresponding lock block located in the middle of the crates. Ice fans and bubbles containing viruses are found in the bottom-right formation, in addition to the lock block. Shells can be found in the bottom three rows of cages. The capsule amount is increased from 33 to 36 since version 2.1.0. Besides that, this stage is otherwise the same.
	Stage 292	8-Bit Dr. Mario Dr. Fire Mario	Starting with 40 capsules, the objective of this stage is to eliminate all viruses (18). This stage contains crates and Brick Blocks locked behind red cages, with the lock block situated at the topmost row. It also features floatie viruses on the left and right columns, along with exploders confined within the structure. Pop cannons are found in the leftmost and rightmost columns. Prior to March 18, 2021, the stage layout was different. The following changes were made: The first and last virus in row #10 are replaced with pop cannons. In addition, the contents of the middle cage in row #10 is changed from a Brick Block to a pop cannon.
	Stage 293	Dr. Mario Dr. Wendy	Starting with 40 capsules, the objective of this stage is to collect all coins from Coin Blocks (30) and collect all purple coins (16). This stage features Brick Blocks containing coins, along with purple coins (both caged and uncaged) interspersed among viruses at the third to seventh rows. Additional viruses are found in the first two rows. Purple coins are unlocked in the following sequence (since version 1.2.0): The 6 coins in rows #6 and #7. The 4 coins in row #5. The 6 coins in rows #3 and #4. Prior to version 1.2.0, the stage layout was different. The following changes were made: The top three rows of purple coins are changed to caged coins. The top row of Brick Blocks are no longer Coin Blocks. Additional viruses are added to the third row. Prior to version 1.3.5, the stage layout was different. The following changes were made: Capsule amount is increased from 40 to 42. Two crates each requiring four hits are added in the middle column. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is reduced from 42 to 40. The Brick Blocks (containing coins) in the seventh row are now inside bubbles.
	Stage 294	Dr. Kamek Dr. Larry	Starting with 35 capsules, the objective of this stage is to eliminate all viruses (24). This stage is shaped like a right-angle rainbow, and contains cages that contain colorful crates in the light-blue and red ones, and Ice Fans in the green ones. Additionally, viruses in Bubbles are found throughout the stage. Hidden viruses are found in Brick Blocks. The capsule amount is increased from 33 to 36 since version 1.3.5. Besides that, this stage is otherwise the same. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is reduced from 36 to 35. The second virus in the fourth row and the first two viruses in the eighth row are no longer inside bubbles.
	Stage 295	Dr. Baby Peach Dr. Lakitu	Starting with 38 capsules, the objective of this stage is to eliminate all viruses (24) and collect all keys (3). This stage contains colorful crates and viruses around the crates, including dust viruses. Additionally, a shell and an exploder appear on the middle row.
	Stage 296 (Hard)	Dr. Kamek Dr. Ludwig	Starting with 33 capsules, the objective of this stage is to eliminate all viruses (33). The stage layout is shaped like a mirrored percentage symbol (%). On the "dot" portions, the Ice Fans are surrounded by viruses, plus there's a lock block located on the top portion. The lock block will unlock the exploders, which are sandwiched between fully-frozen viruses.
	Stage 297	Dr. Larry Dr. Baby Daisy	Starting with 32 capsules, the objective of this stage is to eliminate all viruses (40) and collect all keys (2). Between the keys and doors are colorful crates. Viruses are found on the left and right of the colorful crates and doors, and the middle column is empty. Several of the viruses are half-frozen. Pop cannons are located in the same columns as the colorful crates, while exploders are found in row #2. Prior to March 18, 2021, the stage layout was different. The following changes were made: Capsule amount is reduced from 40 to 32. The colorful crates in row #7 are changed to pop cannons. The second and fifth viruses in row #2 are changed to exploders Half of the viruses in row #1 to #6 are changed to become half-frozen, in a checkered pattern.
	Stage 298	Dr. Fire Peach Dr. Daisy	Starting with 37 capsules, the objective of this stage is to eliminate all viruses (31). This stage features viruses hugging against Ice Fans, along with colorful crates that block the other side of the viruses and a lone virus in the top-left corner. Shells are available in this stage. Prior to version 1.3.5, the stage layout was different. The following changes were made: Capsule amount is increased from 33 to 37. Exploders are added within the red and green colorful crates. All ice fans except for the first and third in the leftmost row are changed to become half-frozen.
	Stage 299	Dr. Blooper Dr. Daisy	Starting with 38 capsules, the objective of this stage is to eliminate all viruses (26). This stage features cages, with the red lock block in the middle, while the green lock block is surrounded by viruses in the top two rows. The red cages hold a row of viruses including floatie viruses along with a row of crates that must be broken to access the top two rows of viruses. The capsule amount is increased from 34 to 38 since version 2.0.0. Besides that, this stage is otherwise the same.
	Stage 300 (Hard)	Dr. Toad Dr. Larry	The last stage of the first area and starting with 44 capsules, the objective of this stage is to eliminate 25 red viruses, eliminate 25 light-blue viruses and collect all keys (3). 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 7 lines are introduced. This stage contains colorful crates scattered around the stage with viruses around them. Brick Blocks and doors will be visible as the stage scrolls. When cleared, the rest of the first area in the world map gets cleared of viruses. Players also obtain the Star Bunny assistant upon completing this stage. Prior to version 1.3.5, the stage layout was different. The following changes were made: Capsule amount is increased from 33 to 37. Additional colorful crates are scattered throughout the beginning portion of the stage. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is increased from 37 to 40. The stage is shifted one row higher due to the Empty Blocks being removed from the absolute topmost row. The capsule amount is increased from 40 to 44 since version 2.1.0. Besides that, this stage is otherwise the same.

Area 2

Image	Stage	Best Doctors	Overview
	Stage 301	Dr. Baby Luigi Dr. Daisy	Starting with 15 capsules, the objective of this stage is to eliminate all viruses (3). This stage introduces the Capsule Plus, which when eliminated, will increase the capsule amount by the number displayed. Every time a capsule is added to the stage, the number of every Capsule Plus is reduced by one, becoming eliminated when the number reaches zero. Purple coins are unlocked in the following sequence: The 2 coins in row #9. The 2 coins in row #8. The 2 coins in row #7. The 2 coins in row #6. The 2 coins in row #5. The 2 coins in row #4. The 5 coins surrounding the leftmost virus. The 5 coins surrounding the rightmost virus.
	Stage 302	Dr. Yoshi Dr. Peach	Starting with 8 capsules, the objective of this stage is to eliminate all viruses (22). In this stage, Capsule Plus capsules are interspersed among Brick Blocks and viruses.
	Stage 303	Dr. Luma Dr. Baby Mario	Starting with 10 capsules, the objective of this stage is to eliminate all viruses (27). This stage features several Capsule Plus capsules found among viruses, with numbers ranging from 3 to 7. The capsule amount is increased from 5 to 10 since version 2.1.0. Besides that, this stage is otherwise the same.
	Stage 304	8-Bit Dr. Mario Dr. Kamek	Starting with 38 capsules, the objective of this stage is to eliminate all viruses (19). This stage features three floatie viruses on the rightmost column, along with hidden viruses in Brick Blocks. Additionally, half-frozen crates are found throughout this stage.
	Stage 305 (Hard)	Dr. Wendy Dr. Daisy	Starting with 43 capsules, the objective of this stage is to eliminate all viruses (11) and collect all coins from Coin Blocks (36). This stage is shaped like a "V". It contains crates blocking the way to the viruses, along with shells and exploders among them. All Brick Blocks contain coins. Prior to version 1.3.5, the stage layout was different. The following changes were made: Capsule amount is increased from 42 to 44. A shell and an exploder each replaced viruses on the left and right sides. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is reduced from 44 to 43. The crates in the second and third rows have reduced durability, originally taking three hits to break.
	Stage 306	Dr. Roy Dr. Baby Peach	Starting with 33 capsules, the objective of this stage is to eliminate all viruses (30) and collect all keys (5). The only colors available in this stage are red and green. This stage contains a boundary of crates, along with keys and doors. Two exploders are found within the boundary, while viruses are found outside the boundary, except for the bottom. Pop cannons are found in columns #2 and #8. Prior to version 1.3.5, the stage layout was different. The following changes were made: Capsule amount is increased from 40 to 43. Certain crates above the left and right keys are changed from requiring four hits to three hits. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is reduced from 43 to 33. Two keys are added in row #8, replacing the first and last crates. Their doors are placed two rows above them, also replacing crates. The middle crate in the fourth row has reduced durability from four hits to two hits. The shell in row #6 is replaced by an exploder. Prior to March 18, 2021, the stage layout was different. The following changes were made: The objective of this stage is changed to require eliminating all viruses in addition to collecting all keys. The available colors are changed to red and green only. The first and last virus in row #3 are replaced with pop cannons. The first virus in row #8 is replaced with a shell. The viruses and shell in rows #4, #5, #7 and #8 are changed to become half-frozen.
	Stage 307	Dr. Wendy Dr. Daisy	Starting with 43 capsules, the objective of this stage is to eliminate all viruses (18), collect all coins from Coin Blocks (24) and collect all purple coins (34). This stage contains purple coins shaped like a "U", with viruses found within the boundary of coins. Coins are found in all Brick Blocks.
	Stage 308	Dr. Fire Rosalina Dr. Ludwig	Starting with 44 capsules, the objective of this stage is to eliminate all viruses (27) and collect all purple coins (16). This stage contains viruses arranged in a triangle that is blocked off by fans, colorful crates and purple coins. Purple coins are unlocked in the following sequence: The 2 coins in the row #9. The 2 coins in the row #8. The 4 coins in rows #6 and #7. The 4 coins in rows #4 and #5. The 3 coins in rows #2 and #3. The 1 coin in row #1. Prior to version 1.3.5, the stage layout was different. The following changes were made: Capsule amount is increased from 39 to 44. Certain fans are half-frozen. Players are guaranteed to start the stage with one full-size rainbow capsule. Prior to version 2.0.0, the stage layout was different. The following changes were made: The first capsule is no longer a full-size rainbow capsule, likely due to the Rainbow Start item. The fans along the ninth row and the rightmost column save for the one in the fourth row are removed. Next to the rightmost coins in the sixth and eighth rows, fully-frozen fans are added. Next to the rightmost coins in the fifth columns and seventh columns, colorful crates are added. The existing fan in the eighth row is now fully-frozen and the fan in the fourth row that wasn't half-frozen is now half-frozen. The purple coin in the top-right corner is shifted to the top-left corner, replacing a virus. In its original place, a colorful crate is added. The coin unlocking order is reduced from 8 groups to 6 group, where previously 2 coins are unlocked at once starting from row #9 to the first two rows.
	Stage 309	Dr. Diddy Kong Dr. Daisy	Starting with 10 capsules, the objective of this stage is to eliminate all viruses (18), break all Brick Blocks (24) and break all crates (12). The only color available in this stage is red. In this stage, there are rows of caged Brick Blocks in the leftmost three columns and the rightmost three columns, as well as rows of caged crates in the middle three columns. In between the caged Brick Blocks are Capsule Plus starting from +10 and floatie viruses, while in between the caged crates are exploders, a lock block and floatie viruses. Pop cannons are in the same columns as the Capsule Plus, exploders and lock block. Prior to March 18, 2021, the stage layout was different. The following changes were made: Capsule amount is reduced from 10 to 5. The available color is changed to red only. The Capsule Plus amount is changed from +20 (ones in row #2) and +15 (ones in row #4) to +10. The lock blocks that were not red are replaced with exploders. Floatie viruses are added in the gaps within rows #2 to #7. Pop cannons are added to the bottom of the last objects in columns #2, #5 and #8. The capsule amount is increased from 5 to 10 since June 2021. Besides that, this stage is otherwise the same.
	Stage 310 (Hard)	Dr. Toad Dr. Daisy	Starting with 20 capsules, the objective of this stage is to eliminate all viruses (51). This stage is a scrolling stage where viruses are hidden in Brick Blocks, dust and cages. The lock blocks are surrounded by Brick Blocks at the topmost portion of the stage. Capsule Plus capsules are found in clouds separated by colorful crates. 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 7 lines are introduced. Prior to version 1.3.5, the stage layout was different. The following changes were made: Crates and Brick Blocks are removed from the bottom-most row. The two bottom-most Capsule Plus capsules start with a number of 10 instead of 7 An exploder covered in dust replaces a dust virus at the middle of the second bottom-most row. An exploder covered in dust replaces a dust virus at the middle of the fourth topmost row. Prior to version 2.0.0, the stage layout was different. The following changes were made: Crates in the first and fourth row have reduced durability by one level, going from four hits to three hits and three hits to two hits respectively. Crates in the row after the stage scrolled once and the row after the stage scrolled four times have reduced durability from four hits to three hits. Certain dust viruses are no longer covered in dust. The Brick Blocks in the fourth row (before the stage scrolls) no longer contain hidden viruses. The capsule amount is increased from 15 to 20 since June 2021. Besides that, this stage is otherwise the same.
	Stage 311	Dr. Luma Dr. Yoshi	Starting with 36 capsules, the objective of this stage is to eliminate all viruses (32). This stage is shaped like an empty "X", where the viruses in the top portion are covered in clouds.
	Stage 312	Dr. Fire Rosalina Dr. Donkey Kong	Starting with 40 capsules, the objective of this stage is to eliminate all viruses (42). This stage contains two groups of viruses each shaped like right-angle triangles, and among them three floatie viruses are found, two on one side and one on the other. Separating the two groups are crates and Ice Fans.
	Stage 313	Dr. Yoshi Dr. Wendy	Starting with 35 capsules, the objective of this stage is to eliminate all viruses (14), collect all coins from Coin Blocks (30) and collect all purple coins (21). The only colors available in this stage are red and green. This stage is shaped like a triangle. Coins are found in all Brick Blocks. Floatie viruses are found on the side of the triangle except the topmost row and the bottom-most row. Exploders are found in row #8 while shells are found in rows #7 and #9. Purple coins are unlocked in the following sequence: The 8 coins in row #9. The 6 coins in row #7. The 4 coins in row #5. The 2 coins in row #3. The 1 coin in row #1. Prior to version 1.3.5, the stage layout was different. The following changes were made: Capsule amount is increased from 40 to 42. Two exploders are added in the second bottom-most row between Brick Blocks. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is reduced from 42 to 35. The objective of this stage is changed so that eliminating all viruses is no longer necessary. Purple coins in the middle column are removed, except for the first row. Prior to March 18, 2021, the stage layout was different. The following changes were made: The objective of this stage is changed to require eliminating all viruses in addition to collecting all coins from Coin Blocks and collecting all purple coins. The available colors are changed to red and green only. All viruses are changed to floatie viruses. Shells are added in the middle of rows #7 and #9.
	Stage 314	Dr. Baby Luigi Dr. Toad	Starting with 42 capsules, the objective of this stage is to eliminate all viruses (38). This stage is shaped like a four-petaled flower, where viruses and Ice Fans form the petals, while the colorful crates form the pistil. An exploder can be found in the middle of the colorful crates.
	Stage 315	Dr. Goomba Tower Dr. Daisy	Starting with 25 capsules, the objective of this stage is to eliminate all viruses (24). In this stage, Capsule Plus capsules are found in cages surrounded by crates, which is unlocked by clearing the lock block in the middle, also surrounded by crates. Shells can be found in the same rows as the Capsule Plus capsules. Viruses are found diagonally next to the shells and hugging the sides from the fourth to sixth rows. Prior to version 2.0.0, the stage layout was different. The following changes were made: Capsule amount is reduced from 16 to 15. Two lock blocks are added in the eighth row at the leftmost and rightmost columns. Their respective cages are at the groups of viruses above them. The crates in the fifth row have reduced durability from two hits to one hit. The second and fifth crates in the third row and the crates in the eighth row and ninth row have increased durability from two hits to three hits. Prior to version 2.1.0, the stage layout was different. The following changes were made: Capsule amount is reduced from 15 to 17. The crates in the sixth row have increased durability from requiring two hits to requiring four hits. The crates in the eighth row have reduced durability from requiring three hits to requiring two hits. The capsule amount is increased from 17 to 25 since June 2021. Besides that, this stage is otherwise the same.
	Stage 316 (Hard)	Dr. Wendy Dr. Baby Daisy	Starting with 60 capsules, the objective of this stage is to collect all coins from Coin Blocks (36) and collect all purple coins (24). This stage contains three columns of purple coins in Bubbles, along with Brick Blocks containing coins on the leftmost and rightmost columns. Viruses are found in the other columns. Prior to version 1.3.5, the stage layout was different. The following changes were made: Capsule amount is increased from 44 to 46. Brick Blocks in the topmost row are removed. Eight viruses are added above the columns with existing viruses. The capsule amount is increased from 46 to 48 since version 2.0.0. Besides that, this stage is otherwise the same. Prior to version 2.1.0, the stage layout was different. The following changes were made: Capsule amount is increased from 48 to 50. The third virus in row #8 is removed. The capsule amount is increased from 50 to 60 since June 2021. Besides that, this stage is otherwise the same.
	Stage 317	Dr. Larry Dr. Wendy	Starting with 35 capsules, the objective of this stage is to eliminate all viruses (8), collect all coins from Coin Blocks (30) and collect all keys (4). The only colors available in this stage are red and light-blue. This stage contains keys that are blocked by colorful crates and Brick Blocks, along with Brick Blocks containing coins: three in the second row of Brick Blocks, five in the third row and two (three prior to version 1.2.0) in the fourth row. Exploders are found in the middle column and row #5. Prior to version 1.2.0, the stage layout was different. The following changes were made: The bottom-most row of Brick Blocks are removed. Two viruses are added in the same row as the second exploder from the top. An exploder is added in the middle of the seventh row, replacing a Brick Block containing coins. Prior to March 18, 2021, the stage layout was different. The following changes were made: Capsule amount is reduced from 40 to 35. The objective of this stage is changed to require eliminating all viruses in addition to collecting all coins from Coin Blocks and collecting all keys. The available colors are changed to red and light-blue only. The first Brick Block in row #2 now contains a hidden shell. Brick Blocks that do not contain coins in rows #4 and #7 are replaced with floatie viruses. In addition, a floatie virus are added directly below each of the floatie viruses in row #7. The viruses in row #5 are replaced with exploders.
	Stage 318	Dr. Fire Rosalina Dr. Roy	Starting with 35 capsules, the objective of this stage is to eliminate all viruses (12), break all crates (20) and collect all virus coins (5). In this stage, two rows of Brick Blocks are in red cages. Additionally, floatie viruses in bubbles are found below the second row of Brick Blocks. Exploders are surrounded by crates between the rows of Brick Blocks. The pop cannons are in the same columns as the exploders and lock blocks. Virus coins are obstructed by the crates and the virus in row #5. The capsule amount is increased from 45 to 47 since version 1.3.5. Besides that, this stage is otherwise the same. Prior to version 2.1.0, the stage layout was different. The following changes were made: The crates in the first two rows have reduced durability (two hits to one hit). Four of the crates in each group of eight crates have reduced durability (three hits to two hits). Prior to March 18, 2021, the stage layout was different. The following changes were made: Capsule amount is reduced from 47 to 35. The objective of this stage is changed to require collecting all virus coins in addition to eliminating all viruses and breaking all crates. The contents of the second and fifth bubbles in row #9 are changed from floatie viruses to pop cannons. In the middle column, a pop cannon, a floatie virus and a virus are added. Three virus coins are added in between the rows of caged Brick Blocks and two virus coins are added behind the crates above the upper row of caged Brick Blocks.
	Stage 319 (Hard)	Dr. Yoshi Dr. Daisy	Starting with 13 capsules, the objective of this stage is to eliminate all viruses (12). In this stage, Capsule Plus capsules are scattered throughout Brick Blocks and Empty Blocks. Hidden viruses can be found in some of the Brick Blocks. Prior to version 2.0.0, the stage layout was different. The following changes were made: The viruses in the seventh row, eighth column and the eighth row are no longer hidden inside Brick Blocks. The Empty Block in the fifth row, sixth column is changed to a Brick Block.
	Stage 320	Dr. Daisy Dr. Bowser	In the final stage of this world and starting with 26 capsules, the objective is to eliminate all viruses (74) and break all Brick Blocks (27). It starts out with a layer of viruses, followed by Capsule Plus capsules within colorful crates and crates. Following that are another group of viruses, and after that are colorful crates among Brick Blocks. Another group of viruses appear after that, and later on are exploders surrounded by Brick Blocks and crates. The topmost line contains more viruses. 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 11 lines are introduced. Once it is cleared, the remaining area of the stage map gets cleared of viruses, and players can access World 9. Upon completion, players earn a free Staff Ticket. Prior to version 1.3.5, the stage layout was different. The following changes were made: Capsule amount is increased from 20 to 22. A row of Empty Blocks are removed from the topmost portion of the stage, rendering the level with one less row. Six viruses are added in the bottom-most two rows. Two Capsule Plus capsules are replaced with exploders in the fourth bottom-most row. The remaining Capsule Plus capsules increased its number from 20 to 25. Crates in the forth bottom-most row require three hits instead of four hits. Two hidden viruses are added in the Brick Blocks found in the second leftmost and rightmost Brick Blocks below the exploders near the topmost portion of the stage. The capsule amount is increased from 22 to 26 since version 2.0.0. Besides that, this stage is otherwise the same.

Challenge stages

Image	Stage	Best Doctors	Overview
	Stage 8A	Dr. Toad Dr. Fire Rosalina	Within a 105 second time limit, the objective of this stage is to eliminate all viruses (52). The colors available in this stage are green, light-blue, and pink. This stage consists of dust viruses on the two leftmost and two rightmost columns. Additionally, eight of each color of half-frozen viruses are found, with the green ones located on the corners, while the light-blue and pink ones are found in the middle column. Blocking the pink and light-blue viruses are light-blue and pink crates respectively. The timer is increased from 85 seconds to 105 seconds since version 2.0.0. Besides that, this stage is otherwise the same. Starting from version 1.2.0, completing this stage awards the player 500 coins.
	Stage 8B	Dr. Wendy Dr. Dry Bowser	Within a 95 second time limit, the objective of this stage is to eliminate all viruses (7), break all Brick Blocks (62) and collect all virus coins (11). The only colors available in this stage are light-blue and pink. Floatie viruses are found in this stage, and some Brick Blocks are half-frozen. The timer is increased from 80 seconds to 95 seconds since version 2.0.0. Besides that, this stage is otherwise the same. Starting from version 1.2.0, completing this stage awards the player 500 coins.
	Stage 8C	Dr. Baby Peach Dr. Kamek	Within a 100 second time limit, the objective of this stage is to eliminate all viruses (20) and collect all coins from Coin Blocks (36). The colors available in this stage are yellow, light-blue, and pink. The viruses are patterned after a dollar symbol, with the viruses forming an "S" while the Brick Blocks form two vertical lines being crossed by the "S". The viruses require the yellow lock block to be cleared to unlock the yellow cages. The timer is increased from 85 seconds to 100 seconds since version 2.0.0. Besides that, this stage is otherwise the same. Completing this stage awards the player 1000 coins and a Staff Ticket (3 Hearts prior to version 1.2.0). Prior to version 1.2.0, the virus icon showed only the yellow virus, which supposedly means that they are only needed to be eliminated. This is an oversight since there are 20 viruses altogether, and eliminating the non-yellow viruses count towards the total.

Special Stage

Image	Stage	Best Doctors	Overview
	Special Stage	Dr. Rosalina Dr. Luma	Starting with 40 capsules, the objective of this stage is to eliminate all viruses (58) and collect all keys (24). There are three parts in this stage, and each part consists of viruses on each column obstructing the key from reaching the door. 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 12 lines are introduced. Completing this stage awards the player 1000 coins, and as of Version 1.2.0, Dr. Luma is also awarded. Prior to version 2.2.0, the stage layout was different. The following changes were being made since: Capsule amount is reduced from 50 to 40. The keys and doors in the middle column are removed or replaced. The second door is replaced by a Brick Block, while the topmost key is replaced by a virus. In the initial screen of this stage before the stage scrolls, the viruses are moved up two spaces. The pink lock block is moved from the eighth-revealed row to the last-revealed row, where it is changed to fully-frozen. A virus is placed where the pink lock block used to be.

Stage layouts for scrolling stages

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  Stage 300 (all 7 lines)

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  Stage 310 (all 7 lines)

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  Stage 320 (first 5 of 11 lines)

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  Stage 320 (the rest of the 11 lines after the first 5)

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  Special Stage (first 6 of 12 lines)

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  Special Stage (the rest of the 12 lines after the first 6)

Stage layouts in previous versions

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  Stage 293 prior to version 1.2.0

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  Stage 317 prior to version 1.2.0

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  Stage 8C prior to version 1.2.0. Notice that the virus icon only shows a yellow virus.

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  Stage 283 prior to version 1.3.5

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  Stage 289 prior to version 1.3.5

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  Stage 293 prior to version 1.3.5

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  Stage 298 prior to version 1.3.5

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  Stage 300 prior to version 1.3.5

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  Stage 305 prior to version 1.3.5

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  Stage 306 prior to version 1.3.5

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  Stage 308 prior to version 1.3.5

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  Stage 310 prior to version 1.3.5

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  Stage 313 prior to version 1.3.5

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  Stage 316 prior to version 1.3.5

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  Stage 320 prior to version 1.3.5

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  Stage 282 prior to version 2.0.0

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  Stage 289 prior to version 2.0.0

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  Stage 293 prior to version 2.0.0

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  Stage 294 prior to version 2.0.0

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  Stage 300 prior to version 2.0.0

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  Stage 305 prior to version 2.0.0

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  Stage 306 prior to version 2.0.0

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  Stage 308 prior to version 2.0.0

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  Stage 310 prior to version 2.0.0

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  Stage 313 prior to version 2.0.0

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  Stage 315 prior to version 2.0.0

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  Stage 319 prior to version 2.0.0

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  Stage 315 prior to version 2.1.0

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  Stage 316 prior to version 2.1.0

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  Stage 318 prior to version 2.1.0

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  Special Stage prior to version 2.2.0

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  Stage 281 prior to March 18, 2021

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  Stage 283 prior to March 18, 2021

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  Stage 288 prior to March 18, 2021

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  Stage 290 prior to March 18, 2021

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  Stage 292 prior to March 18, 2021

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  Stage 297 prior to March 18, 2021

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  Stage 306 prior to March 18, 2021

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  Stage 309 prior to March 18, 2021

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  Stage 313 prior to March 18, 2021

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  Stage 317 prior to March 18, 2021

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  Stage 318 prior to March 18, 2021

Profiles

• Dr. Mario World Twitter:
  • Red: "Apparently new stages are gonna be added at 1 AM PT on Oct. 4. We might get to travel to outer space and see a whole new galaxy! Wait a minute…these round stars sure do look familiar..."
  • Blue: "It appears that new stages have been added once again! The structure seated among them is known as the Comet Observatory, and it's used for travel from galaxy to galaxy. Such a shame it can't be used to escape these pesky doctors!"