Arceus and Darkrai have made their way into Pokemon Brilliant Diamond and Shining Pearl as a result of version 1.3.0, and you can grab them now, provided that you meet a few requirements.
Basically, both of them require you to finish the game and unlock the National Pokedex, so there’s a bit of legwork involved if you’re expecting them to just pop into your boxes. Before you follow these steps, make sure you have the 1.3.0 update verified so you can get the items required to square off against Arceus and Darkrai.
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