porygon does not evolve using levels, instead you have to trade it while holding the item up-grade you capture porygon at level 18-20.
the obtainence of porygon is lv25
Porygon does not evolve by training it levels. You must trade with an Up-Grade attached.
you trade it while holding an up-grade.
You can give the Upgrade to Porygon and then trade it to a friend to make Porygon evolve into Porygon2, in order to evolve Porygon2 then give a Dubious Disc to Porygon2 and then trade it to someone and it'll evolve into a Porygon-Z.
Porygon evolves when being traded while holding an Up-Grade
Porygon's level dosen't interfere with it's evolution, because Porygon does not evolve through Level Up. You need to trade a Porygon with another Pokemon game. Once the traded Porygon reaches the other game, it will evolve into Porygon-2.
There is no certain level, porygon evolves when it is traded and is holding upgrade.
Porygon? It doesn't evolve at a level. You need to trade with a certain item attached to Porygon.
Porygon doesn't evolve at a level. You need a special item to make it evolve.
porygon 2 doesn't evolve with a level but it evolves when u trade it with an up grade
Porygon-Z does not evolve any further.
the obtainence of porygon is lv25
Porygon does not evolve by leveling up You have to get an upgrade and trade Porygon while its holding it, Porfessor Oak should have one
he evolves at level 25
trade while holding up grade and it will evolve into porygon 2
Porygon evolves while being traded while holding an Upgrade.
get porygon up to a good level, then give the upgrade or dubious disc to porygon, then trade it and trade it back, if you give it upgrade, you will get porygon2, if you give it dubious disc, you get porygon-Z! yay!