Pokemon Platinum Cheats

Ribbons

These are rewarded when you complete the indicated task.
Ability Ribbon - Beat Palmer in single battle (1st time)
Great Ability Ribbon - Beat Palmer in single battle (2nd time)
Double Ability Ribbon - Win 50 consecutive Double Battles
Multi Ability Ribbon - Win 50 consecutive Multi Battles
Pair Ability Ribbon - Win 50 consecutive Multi Battles (Over wireless)
World Ability Ribbon - Attain Rank 5 at the Wi-Fi Battle Room

Platinum Orb

When you have beaten the Elite 4 go to the Turnback cave making sure you don't take the same door which you came and then go past the three pillars and you'll find the item Rare Bone and the portal to the Torn World. If you then follow the path you will eventually find the Platinum Orb which if you then give to Giratina will change to it's original form.

National Pokédex

Super Special Happy Birthday Message

If you play the game on your birthday after beating the Elite 4, or just set the DS clock to your birthday, then go talk to Dawn or Lucas, they will wish you a Happy Birthday

Watch Diamond Dust fall at Snow point city

If you happen to be in Snow Point City on the 12th of January, you can enjoy Diamond Dust falling from the sky in celebration of the b-day of Junichi Masuda, Gamefreaks Director and Composer of Pokemon Music.