Special magnetic field

A special magnetic field (Japanese:  special magnetic field) enables, , and to evolve into , , and , respectively.

In the core series games

 * In Sinnoh, Mt. Coronet contains a special magnetic field. Magneton and Nosepass may evolve anywhere in Mt. Coronet, including exterior areas, the Spear Pillar, and the Hall of Origin.
 * In Unova, Chargestone Cave contains a special magnetic field. This magnetism is also evident by the cave's puzzle: the player must push stone fragments blocking some passages so they are attracted by larger magnetic rocks, making it possible to continue.
 * In Kalos, contains a special magnetic field that is produced by the nearby Kalos Power Plant. Despite the special magnetic field being produced by the Kalos Power Plant, Nosepass and Magneton will not evolve if leveled up inside the Power Plant.
 * In Hoenn, a special magnetic field is present in New Mauville.
 * In Alola, a special magnetic field is present in Blush Mountain and Vast Poni Canyon.

As there is no special magnetic field in Kanto or Johto, Magneton and Nosepass cannot evolve in, which means the only way to obtain and  is to receive them by trade.

In the Pokémon Mystery Dungeon series
In Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness, Explorers of Sky, and Gates to Infinity, due to the way evolution works, Magneton and Nosepass evolve through the use of the.

In the anime
In Nosing 'Round The Mountain!, Alan specifically asked to keep their battle near Mt. Coronet so that his  could evolve, which it did.

In Cheers on Castaways Isle!, an island located in Diablo's Ocean contained a special magnetic field due to meteorites in the area. Several Nosepass and  were seen inhabiting the island.

In SM104, revealed that he wanted to evolve his  during his Pokémon School class's visit to Poni Island. Hearing this, the island's Nurse Joy suggested him to visit Vast Poni Canyon. In SM106, Sophocles visited the canyon, and his Charjabug successfully evolved into thanks to the canyon's special magnetic field.

In the Pokémon Adventures manga
In Passing by Probopass and Maneuvering around Magnezone, Cyrus's Nosepass and Magneton evolved while inside Mt. Coronet.

In other languages
Campo magnético especial Campo magnetico speciale とくしゅなじば 特殊磁场