A new trailer and collection of screens for Pokémon Omega Ruby and Alpha Sapphire reveals a huge amount of new information including new Mega Evolutions, new mechanics, and gameplay.

In the trailer and gallery below you will see newly revealed Mega Evolutions for Altaria, Salamence, and Lopunny. You will also find details about a a free shiny Beldum holding a Mega Stone that will be distributed online when the game releases on November 21. That shiny Beldum will be able to evolve to a Metang, and then to a Metagross, which will be able to Mega Evolve.

You will also see and find some details about the Pokémon Contest Spectacular which will let Pokémon show off their talents, and Mega Evolve on stage if they can max out audience excitement.

Some more details from the trailer include the return of horde battles where you take on a handful of Pokémon at once, and footage of Pikachu in assorted cosplay in the middle of battle.

Pokémon Omega Ruby and Alpha Sapphire releases for 3DS on November 21. You can find out more about the game by heading here.