Pokémon: Shining Pearl and Pokémon: Brilliant Diamond both include a unique area known as the Grand Underground where players can hunt for treasure and build secret bases. In the original games, there were six regions in the Underground that were accessed through various points in the overworld using an Explorer Kit. There are a few changes to this area in the remakes.
The Underground updates in Shining Pearl and Brilliant Diamondare minor and serve to modernize the area. Rather than a square
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