The two Mega Mewtwos are some of the strongest Pokémon in the competitive metagame - and Mega Stones, being unavailable for transfer via Pokémon Bank, are otherwise impossible to come by - so this giveaway’s one to get your hands on as soon as possible. Without further ado, then, here’s how to get Mega Mewtwonite X and Mega Mewtwonite Y with the Mega Mewtwo download code.

Mega Mewtwo Mega Stones code: M2DESCENT

There are a few instructions kindly offered from the official Pokémon site for downloading the code via Mystery Gift. Here’s how, verbatim: Need more tips? Use our Pokémon Sun and Moon Walkthrough and guide for the main story, our competitive training guide for info on IVs, EV training, Hyper Training and bottle cap farming, and breeding explained, our choice of the best Pokémon Sun and Moon starter from Rowlet, Litten and Popplio, as well as an in-progress list of where to find Zygarde Cells and Cores and our guide to the Battle Tree and both Battling and Trading in the Festival Plaza. We also have a list of QR codes list, Z Crystal locations, Mega Stone locations, Eevium Z Eevee User locations for Extreme Evoboost, evolutions for Alolan Forms and other new Sun and Moon Pokémon and fast way to increase a Pokémon’s Happiness, plus how to transfer across Ash-Greninja from the Sun and Moon Demo, where to catch the Tapu Guardians, how to catch the Ultra Beasts, and how to download the Munchlax Mystery Gift. To do so, you’ll need access to Pokémon Bank - we explain how to transfer Pokémon from various generations in our Pokémon Bank guide - along with having already caught a Mewtwo at some point along your travels of course. Then, simply follow the instructions above to download the Mega Stones, give one to Mewtwo to hold, and you’re ready to go.

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Meanwhile, we’ve compiled a complete list of Pokémon Sun and Moon Mega Stone locations in order to help you out with how and where to find all of them, but above is a quick list of all the Mega Stones you can get via download code specifically. We finally have an end date for the giveaways now, too,and it’s a little closer than we thought. All of the Mega Stone codes will stop working at 23.59 UTC on October 31st, 2017. With that in mind, we suggest you get on and download the stones sooner rather than later, so as not to miss out if the event were to suddenly close!