Romhacker backports Grand Underground from Brilliant Diamond

When it comes to major differences between the original release of Pokemon Diamond and Pearl and their remakes, Brilliant Diamond and Shining Pearl, they're few and far between. One such difference is the Grand Underground, a new feature that adds areas full of wild Pokemon that you can catch

Pokémon Brilliant Diamond & Shining Pearl - Grand Underground

New patch notes explain what will be in the Pokemon Brilliant

Grand Underground Map: All Items & NPC Locations

Pokesav for Pokémon Platinum - The Independent Video

Grand Underground Map: All Items & NPC Locations

Darkrai and Arceus are coming to Pokemon Brilliant Diamond and

Pokesav for Pokémon Platinum - The Independent Video

Pokemon Diamond/Pearl/Platinum/Black/White AltWFC Discord Group

Pokémon Brilliant Diamond & Shining Pearl - Grand Underground

Darkrai and Arceus are coming to Pokemon Brilliant Diamond and

New patch notes explain what will be in the Pokemon Brilliant

Brilliant Diamond/Shining Pearl ROMhacking Update : r/PokemonROMhacks

Pokesav for Pokémon Platinum - The Independent Video

Romhacker backports Grand Underground from Brilliant Diamond