1st you catch Girantina, then you go to the lake near Snowpoint City to catch Uxie then to the lake in between Veilstone City and Pastoria City to Catch Azelf after you caught them go back to your home town to the lake near there (for them all go in the cave) then chase Mespirit (have a Golbat[or Crobat] that is over level 49 and use mean look before it runs then you battle it catch it, after you get the national pokedex then catch Dialga and Palkia, then catch Heatran, Go trace Articuno, Zapdos and Moltres like you did for mespirit, Go to Canalcave City got in the sailors house talk to every one then talk to the sailor he will tell you have to go to Full moon island where then you get the lunar wing to then chase Creselia like before, for Rigigigas you need regice regirock ang registeel for the other Sinoh ones (and Regice Regirock and Registeel) you need an event for the rest you need to catch them in the GBA Series (Emerald, Ruby, Saphire, Redfire, Greenleaf)
Just catch them,you dummy!
NO you need action replay
you cant. You can only do that on platinum):
all 210 in platinum but you only have to see them
Yes, to catch Giritina, Cresselia, and Mesprit. In Pokemon Platinum, you can catch Zapdos, Moltres, and Articuno also. :)
defeat all gyms,elite 4 and champion of that region to catch legendary pokemon
You can catch Sinnoh Pokemon in Pokemon platinum, but you need to migrate and trade unless you have an action replay
You people are all cheaters
You catch them.
no
Moltres is a legendary pokemon all legendary pokemon are harder to capture.
All Legendary Pokemon you can catch in Platinum: Giratina, Azelf, Mesprit, Uxie, Dialga, Palkia, Heatran, Regigigas, Cresselia, Darkrai, Articuno, Zapdos, Moltress, Regirock, Regice, Registeel, Shaymin, Arceus. (Darkrai, Shaymin, and Arceus can only be got by events).