You can catch Groudon only once you have defeated the elite Four. Once you do that, go to the weather istitute (in between Watson's and Winona's towns) and talk to the head scientist. He will tell you where there is either a drought or a large rain storm. Where he tells where one of the things are is where one of the two legendary Pokemon are (Kyoger if it is rain, Groudon if it is a drought). You have to catch the first one to get the second one.
It is Pokemon Ruby, Emerald, and I think it could be Sapphire too. You have to have a Gameboy Advanced though.
in the land cave.
well there is a grondon one but you have to trade a rayquaza for a grondon in dimonn and trade for kyogre is platinom and so on said my school friend who said that there whas a pokemon 2000 game, basicly theres none
its not an emerald its RAYQUAZA the main legendary Pokemon in Pokemon emerald.
You cannot get a Yanma in Pokemon Emerald, as only Hoenn Region Pokemon can be found in Pokemon Emerald.
There is no PalPark in Pokemon Emerald.
Sinnoh Pokemon DO NOT EXIST IN EMERALD!!!
defog is not in emerald,
emerald no doubt
where do you get the spade from on Pokemon emerald
where can i find groudan in Pokemon emerald
rotom isn't in Pokemon emerald