Pokémon Go's new Trade Evolution mechanic is a cool nod to the main series

Last Friday, Pokémon Go released another menagerie of creatures from the Unova region – those originally found in DS games Pokémon Black and White.

But it also added a new gameplay mechanic – Trade Evolution – which is based on something found in the main games all the way back in Pokémon Red and Blue.

In the main Pokémon series, some creatures can only evolve when traded from one Trainer to another. It’s something Pokémon Go has had to work around in the past – as trading was only added to the game later on.

Now, Pokémon Go offers this functionality too, sort of – and has backdated it to include Pokémon which in earlier generations evolved through trading in the main series games. This means creatures such as Kadabra, Machoke, Graveler and Haunter.

And it comes at the perfect time. New Pokémon from Unova added in this wave include Karrablast and Shelmet, which in the main series games can only evolve when traded with one another. Fun Pokémon lore fact – this is because Shelmet loses its suit of armour, which is then picked up by Karrablast for its own evolution.