Légendes Pokemon: Arceus

Hundreds of years before the Pokémon Sparkling Diamond and Pokémon Sparkling Pearl adventure, you are immersed in the still largely unexplored region of Hisui (known today as Sinnoh)! A world full of possibilities awaits you and you are entrusted with a mission: to constitute the very first Pokédex of this region. During your exploration missions, watch for Pokémon in their environment and throw the ancestor of the Poké Ball to try to catch them in real time. Tougher opponents will require the help of your Pokémon in intense battles, but keep in mind that in this world, they will also be real allies for collecting resources! The Legendary Arceus is at the heart of the story, what role will this powerful Pokémon play in your adventure?

Source: TheGamesDB