Nearly two decades after "Pokémon Diamond and Pokémon Pearl" launched on the Nintendo DS, fans have uncovered a rare behind-the-scenes documentary that provides a unique look at how the Generation 4 games were developed.
The footage offers an unusual glimpse into Game Freak's Pokémon development process. It also features early Pokémon designs and concepts that were changed, abandoned, or never appeared in the final versions of the games.
