From the Pokémon Company:
Don’t miss the epic new Pokémon GO trailer created in the style of a nature documentary, featuring Pokémon that have recently begun appearing near you in Pokémon GO.
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The video is narrated by iconic actor and comedian Stephen Fry, with his dulcet tones complemented by an original symphonic score by legendary composer George Fenton.
This could quite possibly be one of the best game trailers ever.