Pokémon Platinum (ポケットモンスター プラチナ Pocket Monsters Platinum) is the third game of Generation IV, after the Pokémon Diamond and Pearl Versions. The version mascot is Giratina, which appears in its Origin Form. The game was officially announced by Nintendo on May 15, 2008. The Japanese version was released on September 13, 2008. The game was released in the U.S. on March 22, 2009.