Pokemon Generations
English name: Pokémon Generations
Genres: Action, Adventure, Fantasy
Type: ONA, Episodes: 18
Aired: Dec 9, 2016 to Feb 2, 2017
Studio: OLM
Source: Game
Rating: PG - Children
Synopsis:
Pokémon Generations revisits each generation of the Pokémon video game series to shed new light on some timeless moments. From the earliest days in the Kanto region to the splendor of the Kalos region, go behind the scenes and witness Pokémon history with new eyes!

(Source: Official site)