.PKM File Extension
File TypePokémon Saved Game Data File
What is a PKM file?
Save file generated by Pokémon Diamond, Pearl, and Platinum games; may be found on Nintendo DS Pokémon cartridges; can be opened and edited on a Windows PC using Pokesav.
Pokesav can edit any aspect of a PKM save file, including Pokemon character data, movesets, and items.