Pokémon FireRed and LeafGreen/Evolution

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Evolution is when Pokémon change forms. There are many different ways this happens:

Contents

[edit] Leveling-up

Sometimes when a Pokémon levels up it evolves. To grow levels your Pokémon must get a certain amount of experience points (exp). Obviously the only way to do that is to have it participate in battle (EXP share also works).

[edit] Trading

Using a GBA link cable you can trade certain Pokémon to other trainers. Some Pokémon evolve when this happens.

[edit] Items

When some Pokémon are given items they evolve.

[edit] Trading with Items

Rare items are known to evolve Pokémon but only if they are traded with the item

[edit] Stones

Leaf, Sun, Moon, Fire, Thunder, and Water Stones also evolve Pokémon.

[edit] Random

Random evolution occurs when one Pokémon may turn into one of two different Pokémon.

[edit] Taming

When Pokémon are happy enough they might evolve.

[edit] Day/Night

Some Pokémon evolve whether it is day or night, this does not work with FireRed/LeafGreen because they don't have an in-game clock so you must trade the Pokémon over to Ruby/Sapphire.