Mega Mushroom: the power-up of excess

ItemMega MushroomMario Kart

Growing until you fill the screen and flattening the scenery in your path. Born on the Mario Party 4 board in 2002 before finding its iconic design in New Super Mario Bros. in 2006, the Mega Mushroom turns the plumber into a colossus. This guide breaks down the damage gauge, the shower of 1-Up Mushrooms it pays out and its career across Kart, Party and Tennis.

Among Mario's power-ups , few bet everything on sheer size. The Mega Mushroom (Mega Mushroom in English) grants neither fire, nor ice, nor flight: it simply makes Mario grow until he fills the screen, turning him into a colossus that pulverizes enemies, pipes, blocks and scenery in his path.

First seen quietly on a board in Mario Party before becoming a platforming star, this yellow-and-red mushroom has carved out a career across the whole series, from racing in Mario Kart to the minigames of Mario Party. Here's a look back at the power of excess, its famous damage gauge and its shower of 1-Up Mushrooms.

Contents

• Origins on the Mario Party board
• Mega Mario: the colossus of New Super Mario Bros.
• The damage gauge and the shower of 1-Up Mushrooms
• A career across the series: Kart, Party and Tennis
• Mega Mushroom versus Mini Mushroom: the two extremes
• Three things to know about the Mega Mushroom
• Quick recap
• FAQ

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Origins on the Mario Party board

Contrary to popular belief, the Mega Mushroom wasn't born in a platformer. Its first appearance dates back to Mario Party 4 (2002), where it works as an item to use on the board. Once activated, it makes grow to enormous size the character, who then rolls two Dice Blocks instead of one and charges along the combined distance, stealing ten coins from every rival it flattens along the way.

It wasn't until New Super Mario Bros. (2006) on Nintendo DS that the item gained its iconic look — a mushroom in yellow and red, a nod to the original Super Mushroom — and became a true platforming power-up.

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Mega Mario: the colossus of New Super Mario Bros.

In New Super Mario Bros., swallowing a Mega Mushroom triggers the transformation into Mega Mario. The plumber grows to gigantic size and becomes a genuine steamroller: for as long as the effect lasts, no enemy can hurt him.

Everything standing in his way is smashed to pieces: Goombas, Koopa Troopas, pipes, blocks, walls and scenery are blown apart. It's one of the rare moments when the player can destroy parts of the level that are normally indestructible, for a jubilant and fleeting rush of power.

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The damage gauge and the shower of 1-Up Mushrooms

The clever idea behind New Super Mario Bros. is to reward destruction. While Mega Mario lays waste to the level, a gauge fills up at the top of the screen, segment after segment, as the wreckage piles up.

When the effect ends and Mario returns to his normal form, that gauge converts into 1-Up Mushrooms: the more chaos you've caused, the more generous the reward, right up to a genuine shower of extra lives (up to twenty-five at once). The power-up rewards charging ahead and demolishing everything rather than tiptoeing through the level.

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A career across the series: Kart, Party and Tennis

The Mega Mushroom has spread far beyond platformers. In Mario Kart Wii, its first appearance in a home-console Mario Kart, it supersizes the driver and his vehicle: extra speed, immunity to off-road terrain and to most items, and above all the ability to flatten rivals, who slow down and lose their items.

The item came back in Mario Kart Tour (2019) and then in Mario Kart World (2025), where it works the way it did in Mario Kart Wii, with a continuous boost and resistance to the Lightning. On the party side, it shows up in several Mario Party (10, Star Rush, The Top 100, Superstars), but also in Mario Tennis: Ultra Smash, Mario Golf: Super Rush or the series Mario & Luigi. In Super Mario 3D World, the giant form even gets a deeper voice, with the effect wearing off as soon as you pass through a Warp Box.

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Mega Mushroom versus Mini Mushroom: the two extremes

The Mega Mushroom has a mirror twin, which also debuted in Mario Party 4: the Mini Mushroom (Mini Mushroom). Where one destroys everything, the other shrinks the hero down to a tiny size.

As Mini Mario, the character can run on water, slip into small pipes, pull off floaty jumps and land on certain blocks without setting them off — but he becomes terribly fragile: the slightest contact is fatal. Together, these two mushrooms make a perfect pair: brute force on one side, vulnerable agility on the other.

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Three things to know about the Mega Mushroom

• A name that shifts: in France, the item has been translated as "Méga champignon", "Mégachampignon" and "Méga Champi" depending on the game.
• An arcade cousin: in the arcade cabinets of Mario Kart Arcade GP, an equivalent item existed under the English name "Giant Mushroom".
• An exceptional bonus: rarer than the classic Super Mushroom, the Mega Mushroom remains a one-off item, which makes every transformation feel like an event.

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The Mega Mushroom at a glance

English name	Mega Mushroom
French name	Méga-champignon (also "Méga Champi")
First appearance	Mario Party 4 (2002)
Iconic design	New Super Mario Bros. (2006)
Effect	Turns you into Mega Mario, a destructive giant
Reward	Up to twenty-five 1-Up Mushrooms
Opposite	Mini Mushroom

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FAQ

• Which game did the Mega Mushroom first appear in?
  On the board of Mario Party 4 (2002), where it made the character grow so they could roll two dice and steal ten coins. It took on its iconic yellow-and-red look in New Super Mario Bros. (2006).
• What does the Mega Mushroom do in New Super Mario Bros.?
  It turns Mario into Mega Mario, a giant who destroys enemies, pipes, blocks and scenery. A damage gauge fills up, then converts into 1-Up Mushrooms once the effect ends.
• Does the Mega Mushroom make you invincible?
  While the transformation lasts, no enemy can hurt Mega Mario, who sweeps aside everything in his path. The effect is still temporary, though, and wears off after a few seconds.
• Which Mario Kart games feature the Mega Mushroom?
  It appeared on console in Mario Kart Wii, before returning in Mario Kart Tour (2019) and Mario Kart World (2025). It supersizes the kart, grants a boost and lets you flatten rivals.
• What's the difference with the Mini Mushroom?
  It's the exact opposite: the Mini Mushroom shrinks Mario and makes him agile (running on water, small pipes) but very fragile, while the Mega Mushroom is all about destructive power.

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