Crystals are obstacles that appear in Pikmin 3 and Hey! Pikmin. Although there are several objects made of crystal-like materials in the game, the standard crystal obstacle is a see-through rock. Crystals can contain objects inside, like fragments, pellets, and also fruits, but their main purpose is to serve as blockades. Despite there being different types of crystal-related objects, all of them need Rock Pikmin or bomb-rocks to be broken – other Pikmin types will just tap away, only to give up after a bit.
In Pikmin 3, large crystals are relatively big crystals. This the most common type of crystal; it appears in every area, except the Tropical Wilds. By throwing 10 Rock Pikmin at them, they will break. They can contain fruit, fragments, data files, and even blobs of ultra-spicy spray in Mission Mode. In addition, the Rock Onion is found in a large crystal.
In Pikmin 3
In Hey! Pikmin
Crystal nodules aren't like other crystals: they don't block paths, contains objects or block geysers, but are the main weapon of Skutterchucks. Crystal nodules are very small, white crystals, and only need one single hit from a Rock Pikmin to break. In Pikmin 3, these objects are thrown by Skutterchucks, while in Hey! Pikmin, they are dropped. In Hey! Pikmin, they also aren't found lying around, and are rather obtained when Skutterchucks walk through certain crystals.
In Hey! Pikmin, icicle-like crystals are crystals that look like icicles. When Olimar and/or his Pikmin approach one of those, the crystal will fall on them, killing or harming the crew. In order to avoid this, the player must trick the crystal into falling and then getting out of its way.
In Hey! Pikmin, Skutterchucks can take crystal nodules in certain crystals. Those crystals are united together, making some kind of crystal nests. Like all other crystals, they can be destroyed by Rock Pikmin. They're one and a half times taller than Olimar, and he can walk on them, but not through them.
The crystal on the Quaggled Mireclops is referred to as a "Mireclops Crystal" specifically and needs 40 hits from thrown Rock Pikmin to take down. Crystal walls block the way with a crystalline wall. While not given any specific names, the Peckish Aristocrab's claw as well as the shells covering the bodies of the Calcified Crushblat, the Armored Mawdad and the Crystalline Crushblat are all made of a crystal-like material. Finally, the Plasm Wraith can spit out an Elemental Plasm that transforms into a huge crystal cube, which must be broken down bit by bit until it collapses into a pool of plasm.
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