Pokémon Diamond and Pokémon Pearl allow players to take on the role of Lucas or Dawn to explore the Sinnoh region and conquer its regional Pokémon league. The region contained 107 new Pokémon and a plot that centered around Team Galactic’s pursuit to remake the entire universe.
The games introduced many new features to the Pokémon series, including online play, a revamp to Pokémon move categorization, and the explorable Underground multiplayer area.
Pokémon Platinum expanded on the two games before it and featured a colder, snowier Sinnoh region than players had previously seen. In addition to changes throughout the region, new Pokémon could also be found that were not available in the earlier games.