You need to complete the Sinoh dex and beat the elite four and you might have to do something else but I don't think so
In Pokemon Platinum, the player can reach Route 228 by heading through Route 226 to come out on the north end of Route 228.
You can get him/her on route 224
Route 225 is not a route that can be found in Pokemon Firered, route 225 is in Pokemon Diamond, Pearl, and Platinum. To get there is Diamond Pearl and Platinum, you have to see every Pokemon in Sinnoh, then talk to Prof. Rowan and get the national dex.
The Magmarizer only appears on Route 214 on Pokemon Platinum. In Pokemon Platinum the Magmarizer can be found north of Ruinic Maniac Bryan on Route 214.
route 214
There's no Route 505 in Pokemon Platinum.
There is not a route 233 on Pokemon platinum.
you get it after you complete the national dex route 203 with Pokemon ruby inserted in ds
You might find that Route 225 is blocked to you in Pokemon Platinum. In order to open it, you have to complete your first Pokedex.
There is no route 233 on Platinum, Diamond or Pearl.
The routes in Pokemon Platinum begin in the 200s.
Pidgey can be found in Route 229 in Pokemon Platinum.
In Pokemon Platinum, the player can reach Route 228 by heading through Route 226 to come out on the north end of Route 228.
You can get him/her on route 224
no,ditto is not in route 218 in Pokemon platinum it is in the trophy garden
Route 225 is not a route that can be found in Pokemon Firered, route 225 is in Pokemon Diamond, Pearl, and Platinum. To get there is Diamond Pearl and Platinum, you have to see every Pokemon in Sinnoh, then talk to Prof. Rowan and get the national dex.
Route 201