Pokémon Diamond and Pearl are Generation 4 main-line Pokémon games in Sinnoh. More to come...
Pokémon Diamond and Pearl
Generation IV, Sinnoh, 2006

Explore Diamond and Pearl
Version Exclusives
Only in Diamond
20 Pokémon
Starters and Gifts
Starters
Officially the First Partner Pokémon, commonly called starters.