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With the tie-in of Professor Oak with the Pokémon Go event for Melmetal, it seems that it is considered a small, far-off part of the canon. With the inclusion of shadow Pokémon, and the statement: "Content from side series games, such as Pokémon Colosseum and Pokémon XD: Gale of Darkness, is canon to the core series unless it conflicts with events in the core series games. Content from spin-offs, such as the Pokémon Mystery Dungeon series, is generally non-canon, outside of being canon to itself." on Bulbapedia, can we consider Orre a canon region now?
