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Hahaha its been a long time since i played it haha can you even catch mew? I heard some crazy theories on how to do it but never really tried it lol.

I tried it on red and blue pretty sure it works on yellow

I thought it was the old school yellow version haha sorry not sure about the method for next gen Pokémon

Well this is a modded version lol
But I do own original yellow. Haha how do you do it :) I'll give it a go!