I'll help!
You must get the event Regigigas that had passed in 2008 I believe. If you had the event then you can get the trio.
you can't get the three regis but, if you have pokemon sapir\rubi\emerald version on the gameboy advance, you can tke the three regis through the pal park in route 221 (in south). *there are three caves that may be the caves of the three regis but i don't know what to do there.
you cant get all the regis only regigigas.
u have to get all three regis and then go to the temple in snowpoint city
I think you have to transfer the three regis from platinum version to pearl version but you have to have platinum version I think that's all I know
well, you actually have to get all the other regis from the gameboy games, then transfer them into platinum. if you want regigigas then you have to take one from sappire, ruby, and emerald, then go to the cave in snowpint city. there, all done!
you only can find him in snowpoint temple in snowpoint city but you must have all three regis. bring all three regis go up to him and press A and the three regis will awekening him. hes a level 1 so have a goodb time catching him.
u cant.. only in platinum
Yes, you do need all 3 Regis (Regice, Regirock and Registeel) in order to awaken Regigigas in the Snowpoint Temple. They must be with you when you awaken Regigigas.but then again it says you need regigigas to awaken the three regis.so you need to get the three regis from a gameboy advance Pokemon game.
Regigigas is Pokemon #486 on Pokemon Platinum. To get it, go to the Snowpoint Temple with Regirock, Registeel, and Regice.
First have all three regis in your party and go to the last floor at Snowpoint Temple, on the fifth floor of the basement.
First, you have to get all three regis, then you go in snowpoint temple, go to where the "statue" is and it will be a regigias. Finally just talk to it.
get all of the regis in your party and bring the to that place where he is a statue to revive it