Evolution

Evolution in the pokemon series is when one pokemon, when reaching a certain level, using a certain stone, learning a certain move, or is traded, changes into a different Pokemon.



Normal Evolution Tricks
Pokémon gains experience after battling wild Pokémon and Pokémon Trainers. The more experience a Pokémon gains, the more it levels up. When a Pokémon reaches a particular level, it will evolve into its next form, if it has one.

There are ways to share experience, such as allow a Pokémon you wish it to evolve to hold Exp. Share. It is a hold item that allow the user the earn experience even if it did not participate in the battle. This is a convenient tool if you want to level up a new or low-level Pokémon.

You can prevent evolution by simply press the 'B' button on the Gameboy when the Pokémon is attempting to evolve. This is useful as some Pokémon will learn moves that cannot be learn in a later form. The Pokémon can hold a Everstone, which stops them to evolve, so that you don't have keep cancelling the evolution everytime it levels up.

Evolution Stones
Some Pokémon will not evolve unless you use a special stones called Evolution Stone. These special Items are linked to the Pokémon's type. Here are a list of Pokémon that can evolve by giving them the stones.

Evolution Items
Some items are needed for a Pokémon to evolve. If a Pokémon hold the item allowing it to evolve, let it level up once and it will then evolve into the second form.

Trading
A small group of Pokémon refuses to evolve, no matter if you are at the appropriate level to trigger the process, unless you trade them with a friend. Some Pokémon need to have a held item to evolve when trading.

Gender Evolution
Small groups of Pokémon requires a gender to evolve into the next stage.

Friendship
Certain Pokémon, especially baby Pokémon, requires friendship with its trainer and if they are fond enough, they are willing to evolve. Some Pokémon only evolves in a certain time of the day with friendship.

Location Based Evolutions
Special Pokémon evolves at a certain area.

Attack Based Pokémon
Certain Pokémon need to know a move to evolve. This is only applicable to Pokémon Diamond/Pearl/Platinum only.