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'''Key items''' are special [[item]]s that players can only obtain once, that either aid the progression of the storyline, travelling or the access new areas. They rarely have anything to do with the player's [[Pokémon]] and are mostly specific to the different {{pkmn|games}}. The items cannot be bought or sold at [[Poké Marts]] or disposed of. Since [[Generation II]], these items have been given their own classification and have been stored in a seperate pocket in the [[bag]].

==Obtaining key items==
[[Image:key_gen1and2c.jpg|thumb|right|200px|Key items cannot be sold.]]
Key items are not generally found lying around on the ground. They are usually obtained throughout the storyline and are given to the player by other people. Key Items cannot be disposed of, bought, sold or held by Pokémon. Once a player has obtained a key item, there is no way of getting rid of it unless it is part of the main storyline. For example, the item [[Machine Part]] found in [[Kanto]] in [[Generation II]] as part of the mission to save the [[Power Plant]] could only be removed when the player had taken it back to the Plant and given it to the manager. Some key items, such as the Squirtbottle, are not deleted once their usefullness has passed, and remain in the inventory for the remainder of the game.

==Common key items==
Although many Key Items are specific to the version of the game being played, basic items continue to feature.
* '''[[Bike]]''' - An item that enables players to travel faster than walking.
* '''[[Fishing|Rod]]''' - An item that enables players to fish for Pokémon in lakes or the sea.
* '''Keys and cards''' - Items that enable players to open doors and access new areas, such as the [[Card Key]].
* '''Tickets''' - Items that enable players to board ships, enter contests and exchange for other key items.

==Exchanging key items==
The exchanging of one key item for another has been present since [[Generation I]]: a [[Bike Voucher]], a seemingly useless item, was given to the player to exchange for a [[Bike]]. Key item exchanging can only happen once, with the exception of Pokémon [[Pokémon Ruby and Sapphire|Ruby, Sapphire]] and [[Pokémon Emerald|Emerald]], in which the player can swap the two [[bike]]s (the [[Mach Bike]] and the [[Acro Bike]]) as they choose. In any case, only one or two items could be exchanged.

==List of all key items==
*[[List of key items in Generation I|In Generation I]]
*[[List of key items in Generation II|In Generation II]]
*[[List of key items in Generation III|In Generation III]]
*[[List of key items in Generation IV|In Generation IV]]

{{Project ItemDex notice}}

[[Category:Items]]
[[Category:Key items]]