you need the national. dex and need to have beaten the elite four. then you migrate regice, regirock and registeel from Pokemon emerald, ruby or sapphire. have them all in your party and go to the temple in snowpoint city.
No, only in diamond and pearl
You don't. You can only catch Regigigas in Diamond, Pearl, and Platinum.
you don't need regigigas for registeel. you need reegisteel, regirock and regice for regigigas on Pokemon pearl or diamond
Regigigas is a Pokemon from Diamond/Pearl and Platinum so it is a newer generation of Pokemon. Therefore, you cannot get it
I don't Know if your being serious but regigigas is a Pokemon created for Pokemon pearl and diamond.
I am sorry it's impossible to get Regigigas in Pokemon Emerald. You can only get it in Pokemon Diamond, Pearl or Platinum.
You cannot get Regigigas for Pokemon Ruby since it is a newer generation of Pokemon. It is for Pokemon Diamond, Pearl and Platinum
Trade with Pokemon Platinum, Pearl, or Diamond.
it's not. buy diamond pearl or platinum.
Regigigas
You cannot find Regigigas in pokemon black and white. You can obtain it by trading with someone who have Pokemon Diamond/Pearl/Platinum.
you cant. regigigas is a sinnoh pokemon. the games regigagas appears in are platnium, pearl and diamond.