Yes its free.
you could have got the gamestop deal they give u a free upgrade to get a regigas i got it by cheats and giches u cant get the deal anymore so your luck is getting da acekard
You can get it for free if you steal it.
you don't
no
at toysRus they have a free lvl 100 regigigas ends march 21
Yes
You have to have an event Regigigas in Diamond or Pearl then transfer it to Platinum in order to be able to unlock the secret caverns to be able to battle and catch Regirock, Regice and Registeel in Platinum however migrating Regirock, Regice and Registeel from a Game boy Advanced game (Ruby/Sapphire/Fire Red/Leaf Green/Emerald) into Platinum will help you to unlock a Regigigas but this specific Regigigas that they unlock is at Level 1 and resides in the Snow point Temple in Snow point Temple and this Regigigas will not unlock the secret caverns for Regirock, Regice and Registeel. Listen to me I'll give you one for free i have hundreds of them I'm selling them so just ask me for some trust me i have them
You can't
There is no legal way to play Pokemon Platinum online for free. You need to purchase or rent the game on Nintendo DS or borrow the game from someone you know who is willing to lend it to you.
You can't get Misdreavus in Pokemon Platinum, you have to trade it through Wi-Fi or get it from someone who has Pokemon Pearl. If Pokemon Pearl can't be found, go to McDonald's as they have free Wi-Fi.
So far, you don't, but until the end of this week you can get arceus with mystery gift at toys r us for free. Go to Pokemon.com and click on Pokemon platinum and it should tell you how to get mystery gift and when the event ends.
There are currently no working DS roms or emulators, but if you want, try searching Google for a DS Emulation with Pokemon Platinum ROM also.