Pokemon Legends: Arceus is an action role-playing game, a first for the main-series of Pokémon games. Despite this distinction and the changes that come with it, Legends: Arceus is said to preserve the core gameplay of past entries in the series. It features an open world setting building on the Wild Area introduced in Pokémon Sword and Shield. The game is set in a bygone era of the Sinnoh region’s history, when it was known as the Hisui region, long before the events of Pokémon Diamond and Pearl take place. It was stated that the objective of the game would be to create Hisui’s first Pokédex.
Pokemon Legends: Arceus – Official Trailer
The mythical Pokémon Arceus will play a major role in the story. Players can capture Pokémon directly in the overworld immediately without going through a battle, and can engage in battle by releasing Pokémon they have previously captured near a wild Pokémon. Poke Balls in this era were made of wood and puffed steam when the Pokémon was caught. At the start of the game, three starter Pokémon options are available: Rowlet (from Pokémon Sun and Moon), Cyndaquil (from Pokémon Gold and Silver), and Oshawott (from Pokémon Black and White), making it the first main series game to feature starter Pokémon from three different generations of games.