Originally Posted by wikipedia.com

Pokémon Platinum, released in Japan as Pocket Monsters Platinum (�ケットモンスタープラ�ナ ,Poketto Monsut� Purachina?), is a title in the Pokémon series of video games. It is an enhanced remake of Pokémon Diamond and Pearl in the same vein as Pokémon Yellow, Crystal, and Emerald. It was released on September 13, 2008, in Japan, and will be released in North America and Europe on March 22, and May 22, 2009, respectively. No date has been set for the Australian release.

Originally Posted by wikipedia.com

The game features Giratina as its mascot and introduces its Origin Forme (オリジンフォルãƒ$ ,Orijin Forumu?), as seen in Pokémon: Giratina and the Sky Warrior. Its initial form is referred to as its Altered Forme in the English localization, but originally called its Another Forme (アナザーフォルãƒ$ ,AnazÄ� Forumu?) in the Japanese release. The storyline involves a disturbance atop Mt. Coronet, as a portal to the "Distortion World" (ã‚„ã�¶ã‚Œã�Ÿã�›ã�‹ã�„ ,Yabureta Sekai?) is opened and Sinnoh's climate becomes colder. The trainers have been given new outfits to suit the colder climate. The Distortion World is a strange place in another dimension where normal physical laws do not apply.

Shaymin, which was distributed as part of admittance to the aforementioned film, has a new form known as its "Sky Forme" (スカイフォルãƒ$ ,Sukai Forumu?), a dual Grass- and Flying-type Pokémon. When traded to Diamond or Pearl from Platinum, Shaymin will transform from its Sky Forme back to its regular forme or Land Forme (ランドフォルãƒ$ ,Rando Forumu?) with the use of a new item in Platinum known as the Gracidea Flower (グラシデアã�®èŠ± ,Gurashidea no Hana?). When the special Regigigas that is given out with a pre-order ticket for Giratina to Sora no Hanataba: Shaymin is traded from Diamond or Pearl to Platinum, it activates an event that makes Regirock, Regice, and Registeel available to catch in Platinum.

Prior to the game's release, silhouette images of five unknown Pokémon were shown on the official website. These Pokémon were later identified as different forms of Rotom. An item called the Secret Key was distributed over the Wi-Fi connection beginning on September 28 to change Rotom's forms.

The Battle Frontier, which was first introduced in Pokémon Emerald, appears again in Platinum with five new frontier brains. In the Wi-Fi Plaza, an arcade area, the player can play minigames with other people over the Wi-Fi connection.