go to the weather institute after you beat the elite four and after you beat or capture groudon he will say a heavy rainfall is at the route so you fly to city that's closer to the route.you use dive their an entrance you be in a square place underwater then you go back up and the cave will be call Marine Cave and Kyogre will be their then you start battling it.It is at level 70 instead of level 45 like on Pokemon Sapphire.
get net balls for kyoger.I used them and they worked.But get alot it is not going to be easy.
no but you can get both Kyoger and Groudon in emerald
To catch kyoger, you have to catch a zubat (more info)
Cave of Origin.
You can use an action replay.
you dont you can only get them from emerald ruby or sapphire
latias/latios/deoxys/jirachi/groudon and kyoger
You can fight Archie before he awakens kyoger
The cool thing about emerald is that you can get 2 kyogres in the game: One in the cave of origin the other in marine cave.
kyoger and latias
catch kyoger and groudon
you can only catch kyoger after you beat red on top of mount silver mr. Pokemon gives you a blue orb on the way to safari zone there is a cave if you surf by the waterfall by wake then you save go in catch kyoger leave and that's it but to get groudon you must have soulsilver and to get rayquaza you have to trade kyoger from heartgold. Hint: groudon and kyoger are level 50 so not that hard.
Get the Fast bike from the bike dealer and you can sail over the cracks in the floor at sky pillar. You can only catch him after you have went to him to stop Groudon/ Kyoger. Watch out though there are rocks that will stop you.Simplified answer: At the top of sky pillar.