How to Get the National Pokédex in Pokémon Platinum

Last Updated: January 28, 2017

Want to obtain the National Pokédex and unlock Pal Park so that you can move your Pokémon from Ruby, Sapphire, Emerald, FireRed and LeafGreen over to Pokémon Platinum? Well, you must see every Pokémon in the Sinnoh Pokédex and then visit Prof. Rowan. Most Pokémon are found by battling trainers throughout the Sinnoh region, but some require further exploring. Read on to find out how to see them all.

Steps

1
Play through the main story until you beat the Elite Four. Along your way, battle all the trainers you find. You will see almost all of the Pokémon this way.
2
Go to the Old Chateau at night to see Rotom, if you haven't already. The Old Chateau is in northern Eterna Forest and requires Cut (HM01) to reach. Interact with the TV that can be found there to initiate a battle with Rotom.

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3
Go to the Solaceon Ruins to see Unown, if you haven't already. It is located east of Solaceon Town.
4
Go to the Pokémon Mansion to see Manaphy, if you haven't already. Read the book in Mr. Backlot's room and Manaphy will be added to your Pokédex's seen list.
5
Visit all the lake caves again to see the Lake-trio, if you haven't already. You must battle Azelf and Uxie, but Mesprit will only require you to interact with it.
6
Go see Prof. Rowan in his lab once you have seen every Pokémon in the Sinnoh Pokédex to receive the National Pokédex.

Community Q&A

Question

I caught Rotom, but I didn't get the National Pokedex - why?

EditorKrijim

Community Answer

You need to complete the Sinnoh Pokedex to get the national in Diamond, Pearl and Platinum.
Question

How do I see Rotom to complete the Sinnoh Pokedex if I need the National Pokedex to battle Rotom?

Ziyan Batada

Community Answer

Go to the old Chateu in the Eterna forest. Use cut to cut down the trees. Go inside and go to the second floor to the door in the middle. Go inside, and go to the door on your left. It has to be from eight p.m to four a.m. Talk to the TV, and it will ask if you want to thump it. If you say yes, a level 20 Rotom will appear.
Question

How do I get all three starter Pokemon?

Community Answer

Start the game three times, choosing different starters each time. Then trade them to a different device and then back to your main game.