Mega Mushroom

Mega Mushrooms are mushrooms that make the user grow to an incredible size and grant invulnerability. In New Super Mario Bros. for the Nintendo DS, Mega Mushrooms cause Mario or Luigi to grow to the size of the entire screen for a limited amount of time, destroying anything in their path including Warp Pipes, enemies, blocks, and even the end-level flagpoles. It also allows the player to kill a boss by walking into it. The megameter is featured at the top of the screen and is filled up by destroying the various objects. When the effect ends, 1-Up Mushrooms are awarded based on the portion of the meter that has been filled. If the meter is completely full, the player is awarded five 1-Up Mushrooms. The Mega Mushroom has the same color scheme of the original Super Mushroom from Super Mario Bros..

Mega Mushrooms are also present in Mario Kart Wii. They share their usual purpose here by increasing the player's size twice. Here it gives them a boost in speed, like the Starman, and the ability to crush opponents, making them slow down.

They also appear in Mario and Sonic at the Olympic Winter Games. They only appear in only two events, Dream Snowball Fight and Dream Curling. In Dream Curling, they make the player's character and the puck bigger. In Dream Snowball Fight, (almost they same thing in Dream Curling) they make the player's character and their snowballs bigger for a short amount of time. If someone gets hit by a big snowball, they pass out for a couple of seconds.

Mario Party series
The Mega Mushroom is an item from Mario Party 4 that allows the player to increase in size. While larger, the player gets to roll two Dice Blocks. This causes the player to bypass all board events, and steal ten coins from other players they pass.