Rotten Mushroom

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Not to be confused with Rotten Mush or Poison Mushroom.
Rotten Mushroom
A Rotten Mushroom in the New Super Mario Bros. U style from Super Mario Maker 2
A Rotten Mushroom in the New Super Mario Bros. U style
First appearance Super Mario Maker 2 (2019)
Effect Hurts or defeats the player
“I bought some mushrooms for a new recipe, but I left them in the car and now they're rotten. Rotten and vengeful. You're going to have to outrun them if you want the reward.”
World-Renowned Chef, Super Mario Maker 2

Rotten Mushrooms are purple or magenta mushrooms with a skull shape that appear in Super Mario Maker 2. They replace 1-Up Mushrooms at night, but only for the Ground course theme. However, the descriptions of two Story Mode levels posted by World-Renowned Chef (Begone, Rotten Mushroom! and Rotten Produce) imply that Rotten Mushrooms are Super Mushrooms that have rotted over time and became vengeful. Unlike most mushrooms, Rotten Mushrooms actively pursue the player, even jumping up ledges up to two blocks high to reach them. However, if the player has invincibility from a Super Star, Rotten Mushrooms will evade them instead. Touching a Rotten Mushroom damages the player, similar to a Poison Mushroom, making it a hazardous obstacle. Their skull-like design and role as an "evil" counterpart to "good" mushrooms makes them comparable to Poison Mushrooms, Zombie Shrooms, and Ghoul Shrooms. Additionally, the object filename for the Rotten Mushroom in Super Mario Maker 2's internal data is "Poison Kinoko", which is a partial translation of the Poison Mushroom's Japanese name. The Super Mario World version of the Rotten Mushroom's sprite resembles Bowser's Flames from said game.

Although Rotten Mushrooms can only be placed in Ground night courses, they can be brought into other themes if Yoshi grabs one with his tongue and travels through a Warp Pipe to another area. They display unique behaviors in other themes:

  • They behave as normal, albeit upside-down, in the Underground night theme.
  • They are slowed by water but jump three blocks high instead of two in the Forest and Underwater themes.
  • They bear a small circle of light in the Ghost House and Underwater night themes.
  • They are affected by low gravity in the Sky and Airship night themes.
  • They are slowed down by lava and poison in the Castle and night Forest themes, respectively.
  • They are unaffected by the wind in the night Desert theme.

As Yoshi is only featured in the Super Mario World and New Super Mario Bros. U game styles, Rotten Mushrooms cannot appear outside of Ground night courses in the Super Mario Bros. and Super Mario Bros. 3 game styles.


Additional names[edit]

Internal names[edit]

Game File Name Meaning

Super Mario Maker 2 PoisonKinoko Poison Kinoko Poison Mushroom

Names in other languages[edit]

Language Name Meaning
Japanese くさったキノコ
Kusatta Kinoko
Rotten Mushroom; shared with Rotten Mush
Chinese (Simplified) 腐烂蘑菇
Fǔlàn Mógu
Rotten Mushroom
Chinese (Traditional) 腐爛蘑菇[1]
Fǔlàn Mógu
Rotten Mushroom
Dutch Bedorven paddenstoel[2] Spoiled Mushroom
French Champignon pourri Rotten Mushroom
German Faulpilz Rotten Mushroom
Italian Fungo marcio Rotten mushroom; shared with Rotten Mush
Korean 부패버섯
Rotten Mushroom
Portuguese (NOE) Cogumelo podre[3] Rotten Mushroom
Russian Гнилогриб[4]
From гниль (rot) and гриб (mushroom).
Spanish Champiñón rancio Rancid mushroom


  1. ^ Nintendo HK. (May 17, 2019). 《Super Mario Maker 2 (超級瑪利歐創作家 2)》Direct 2019.5.16. YouTube. Retrieved May 21, 2019.
  2. ^ Nintendo Nederland. (May 15, 2019). Super Mario Maker 2 Direct - 16 mei 2019. YouTube. Retrieved May 16, 2019.
  3. ^ Nintendo Portugal. (May 15, 2019). Super Mario Maker 2 Direct - 15/05/2019. YouTube. Retrieved Sep 22, 2019.
  4. ^ NintendoRU. (May 15, 2019). Super Mario Maker 2 Direct - 16/05/2019. YouTube. Retrieved May 31, 2019.