Pokemon Emerald, because
one, it has a better legendary
two, it has a more expanded Pokemon universe
three, it has more Pokemon
i think emerald you get sick legendarys
you can't get the black flute in leaf green but you can in Pokemon ruby, sapphire and emerald then trade it to leaf green.
Emerald by far
in my opinion emerald is way better than ruby. that is because there is battle frontier in emerald and in emerald we get a jotho starter pokemon from prof. birch after beating hoen dex!
Emerald.
a girl is better in sapphire, ruby, and emerald. they have more life and they also nore attack power.
For Ruby, Mudkip. For Sapphire, Treecko. For emerald I do not know
Sapphire and Ruby were released at the same time, then Emerald was released later.
you cant but you can trade it from ruby, sapphire, and emerald or use the action replay.
CELIBI IS NOT IN RUBY, SAPPHIRE, OR EMERALD. IT IS NOT, WAS NOT, AND WILL NEVER BE IN RUBY, SAPPHIRE, OR EMERALD.
You cannot get Kyogre on Ruby. You either have to trade it with someone who has Sapphire or emerald, or get sapphire or emerald. Sorry...
No, it is impossible to trade from crystal to ruby/saphire/emerald. The games are incompatible.
Technically speaking, Emerald, but they're really about the same. Get the easier to find/cheaper buy.