In what could be described as an Evolution beyond all Evolutions, Mega Evolution is a new, awe-inspiring transformation certain Pokémon can undergo during battle in the highly anticipated Pokémon X and Pokémon Y video games. Pokémon that Mega Evolve will tap into hidden reserves of strength and power that have never been realized in their regular Evolutions, giving players battling with a Mega-Evolved Pokémon a dominant advantage. Mega Evolutions will revolutionize Pokémon battles and usher in a new Pokémon transformation never before seen in the Pokémon world.

Pokémon like Mega Mewtwo and Mega Lucario will harness the power of Mega Evolution in battle and will see their looks change and stats increase, giving Trainers a great advantage against their opponents. Some Pokémon that Mega Evolve may even change their Ability or type while in battle. Only certain Pokémon, under certain conditions, can Mega Evolve, and unlike regular Evolution, Mega Evolution only occurs during battle—once the battle ends, the Mega-Evolved Pokémon will return to its usual state. One crucial element to undergoing Mega Evolution is a particular kind of item called a Mega Stone...