Try some sites like : coolrom.net, ROM-gods.net, doperoms.com and some others for downlaoding Pokemon platinum.
You can get platinum from download sites if you have DSTT and/or R4.
Download NO$GBA & a Pokémon Platinum ROM.
You Can't!
no where
It is impossible to download a game-boy game onto Pokemon platinum
go to Google then type in Pokemon platinum
download a Pokemon platinum ROM
Pokemon Platinum is not available for free download. Pokemon Platinum is exclusively available on the Nintendo DS in the form of a game cartridge.
no ide a
no
go to dsdolands.com
Go to gamefreke.com