Platinum Old Chateau
Far at the back of Eterna Forest, the Old Chateau rots in silence, its halls hung with dusty portraits and a TV that flickers on its own. After dark, Rotom haunts that very set.
Old Chateau is in Sinnoh, with Eterna Forest to the south. In the story it comes after Eterna City and before Route 206.
OLD CHATEAU MAP
An old manor at the edge of Eterna Forest, two levels of unlit rooms and hallways you wander freely, no field move needed.
Pokemon Encounters
Gastly fills the manor at 100 percent, but two real catches hide inside. A wild Gengar turns up at 4 percent, unusual for a fully evolved Ghost, and an old television in the back holds Rotom, a level 20 encounter that only appears at night.
Rotom
ITEMS
The Old Gateau is a quirky one, a cake that clears status like a Full Heal. Substitute (TM90) and the Dread Plate turn up in the manor too, with a Rare Candy for anyone who pokes around.
TM90 Substitute
Uses HP to creates a decoy that takes hits.
TM90 Substitute
Uses HP to creates a decoy that takes hits.
Rare Candy
A candy that is packed with energy. It raises the level of a single Pokemon by one.
Big Pearl
A quite-large pearl that sparkles in a pretty silver color. It can be sold at a high price to shops.
Dread Plate
An item to be held by a Pokemon. It is a stone tablet that boosts the power of Dark-type moves.
Old Gateau
Old Chateau's hidden specialty. It heals all the status problems of a single Pokemon.
Honey
A sweet honey with a lush aroma that attracts wild Pokemon when it is used in grass, caves, or on special trees.
Old Chateau Guide
Rotom turns up at Level 20 from the flickering TV in the Old Chateau at night, with no National Pokedex needed in Platinum, so you get it far sooner than in Diamond and Pearl. There the same encounter is locked behind the National Dex and Rotom is only Level 15. The Legendary battle theme plays in both games when you interact with the screen.