Pokémon has announced that starting October 13th till the 26th at participating GameStop locations you will be able to snag a Shiny Gengar for your Pokémon X or Y games. This Gengar will come with its mega stone for it to mega evolve into the white Mega Gengar. However they weren’t finished there then on October 27th through November 21st you will be able to FINALLY get the legendary Diancie. Just like before go to your nearest GameStop for a code as well. Looks like it’s going to be an awesome Fall for Pokémon!