Prickly Goombas are a Goomba variant found inside of spiked chestnut shells. They have only appeared in the New Super Mario Bros. series, having debuted in New Super Mario Bros. Wii.
Behavior[]
If the playable character touches a Prickly Goomba, they take damage from touching the spiked shell. Prickly Goombas do not move until their shells are burned open with via a fireball, turning them into regular Goombas. If a character shoots an Ice Ball at a Prickly Goomba while in their Ice form, the Prickly Goomba freezes, but its outer shell does not break.
In New Super Mario Bros. Wii[]
Prickly Goombas are only encountered in World 9-7.
In New Super Mario Bros. U / New Super Luigi U/ New Super Mario Bros. U Deluxe[]
For New Super Mario Bros. U, Prickly Goombas are only encountered in their namesake level, Prickly Goombas!, in Frosted Glacier. For New Super Luigi U, they appear in the level Fire and Ice, found within the same world. In both games, also packaged within the enhanced port New Super Mario Bros. U, Prickly Goombas act the same as in New Super Mario Bros. Wii, but can also be walked on by a Yoshi.