As Tom reported when it was announced, Pokémon Legends Arceus is an open-world Sinnoh game set in a more feudal version of the region. Old school Pokéballs and a mix of previous starter Pokémon feature, though how Pokémon Legends Arceus connects with the Pokémon God is under wraps. You’ll be creating the first ever Pokédex. According to the official blurb, Pokémon Legends Arceus has new action RPG elements: “You’ll be brought to the Sinnoh region, the setting for the Pokémon Diamond and Pokémon Pearl games. But this story unfolds in a long-gone era, before ideas such as being a Pokémon Trainer or having a Pokémon League even existed. “All around, you’ll find Pokémon living wild in harsh environments that make for a Sinnoh unlike the region you may remember from the days of the Pokémon Diamond and Pokémon Pearl games.”